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Gas Technician 3 - Practice Exam Answer Key (15-G3165-1A-1)

Instructions

This exam can be used as a preparation for writing the G3 exam.

Every effort is made to provide information that is accurate. However, materials contained in thisdocument are subject to change at any time.

We give no assurance or warranty that information on this site is current, and take no responsibility for

matters arising from changed circumstances or other information or material, which may affect theaccuracy or currency of information on this site.

This is a practice exam and is for reference purposes only.

165 Questions



Questions

Multiple Choice, 1 attempt(s) permitted.

1. What is the specific gravity of natural gas vapour? (#15-01)

Correct Choice

X 0.551.1

1.52

0.98

Feedback when correct: Correct

Feedback when incorrect: Incorrect


2. When lifting in general, which of the following instructions is correct? (#15-02)

Correct Choice

bend at the back and keep legs straight

use your back muscles as they are the strongest

X the back should be straight and knees bent, to use your leg muscles

feet together with toes spread and lift slowly, using your back muscles




3. What type of diagram(s) identify only connections, functions and flow, and where componentlocation or size and shape are not indicated. (#15-03)

Correct Choice

X schematic diagram

wiring diagram

plan layout

none of the above




4. Who does TSSA report to? (#15-04)

Correct Choice

X The Ontario Ministry of Consumer Services

The Department of National Defence

The Ontario Board of Labour

The Office of the Premier




5. What must a Certificate Holder do when it appears that there has been a CO poisoning

incident? (#15-05)

Correct Choiceaffix a notice containing the information required in clause to the appliance or work

X immediately shut off the supply of gas to the appliance or work; promptly give oral notice

of the shutting off of the gas to the distributor; promptly give written notice to the user, (i)

describing the condition that constitutes the immediate hazard, and (ii) directing that the

appliance or work not be used until the condition is corrected

within 14 days of finding the condition, give written notice of the condition to thedistributor, including notice that the supply of gas has been shut off.

all of the above




6. Size the low pressure piping system shown in the figure (#15-2-18). What type of pipe is used?

(#15-06) (Size the low pressure piping system shown in the fiqure (#15-2-18). what type of pipe is

used?)

Correct Choice

copper pipe

X black iron pipe

plastic pipes636 pipe




7. When dealing with customers, what would a neat, well groomed appearance indicate? (#15-07)

Correct Choice

that you are on the fast track to success

that you enjoy reading fashion magazines

are more concerned with appearances than performance

X that your work will reflect the same care and consideration






8. What are responsibilities of a gas technician if he or she finds a natural gas or propane

appliance that is considered to be an immediate hazard?(#15-08)

Correct Choice

X responsibilities are identified in the local act, regulations and bulletins

unsafe situations must always be reported to CSA

a gas technician is required to notify the manufacturer

a gas technician is required to obtain direction from his or her direct supervisor




9. When should a CGI never be operated or used? (#15-09)

Correct Choice

when the flashback arresters removed

to sample liquid fuelfor sampling gas vapours not identified as suitable by the manufacturer

X all of the above




10. How is area expressed in meters? (#15-10)

Correct Choicem (meters)

X m 2 (meters squared)

m 3 (meters cubic)

none of the above




11. What do thin, equally spaced. broken lines indicate on a technical drawing? (#15-11)

Correct Choice

wiring

drain and vent lines

future lines

X hidden lines






12. What would be a good practice after a customer's problem has been solved and the work is

complete? (#15-12)

Correct Choice

X to perform a follow-up to ensue the customer is still satisfiedto try to sell the customer additional products and services

to sell the customers contact information to other companies who have products andservices for sale

all of the above




13. What is the specific gravity of liquid propane? (#15-13)

Correct Choice

X 0.51

144

1.53

0.55




14. Identify a local requirement with which NVG refueling stations must comply:

(#15-14) (Identify a local requirement with which NVG refuelling stations must comply: (#15-14))

Correct Choice

local zoning requirements

the building code

local fire regulations

X all of the above






15. What is/are non-verbal technique that can calm the upset customer?(#15-15) (What is/are non-verbal technique that)

Correct Choice

a calm sincere concern and interest in facial expressions

avoid eye contact and whistle a happy tune

a non-threatening posture

X both A and C




16. When responding to a customers complaint, which is the best wording to use?

(#15-16) (When responding to a customers complaint, which is the best wording to use? (#15-16))

Correct ChoiceI know how you feel

X I can understand why you feel that way

don't worry, many people have had worse problems

it won't seem so bad once you get our bill




17. Which type of pipe threading die head does not have to be reversed after the thread has beencut?

(#15-17) (Which type of pipe theading die head does not have to be reversed after the thread has

been cut? (#15-17))

Correct Choice

X a quick opening die

a tie dye

a ratcheting die

a solid die






18. What is a type of analyzer?(#15-18) (What is a type of analyzer? (#15-18))

Correct Choice

the tube type

the pocket type

the liquid type

X both A and C




19. What Code deals with propane storage and handling currently accepted into law in Ontario?

(#15-19)

Correct ChoiceCSA B149.1-10

X CSA B149.2-10

CSA B149.3-10

CSA B51-09




20. What is the best alternative communication when a customer's english is heavy accented?(#15-20)

Correct Choice

hire an interpreter

recommend the customer rake additional language training

X ask the customer to write their request

ask the customer to find someone who speaks better English




21. What is the best policy for arguing with customers? (#15-21)

Correct Choice

use a steady, raised and confident voice

stare at the customer with a look of disgust when they are speaking

X always avoid conflict and arguments with customers

call your supervisor and let the customer argue with them






22. What is the minimum recommended distance to place a new fastener, from a failed fastener,

using a power actuated tool? (#15-22)

Correct Choice

1/2 inch

2 inch

2 1/2 inch

X 3 inches




23. What is the definition of Due Diligence? (#15-23)

Correct Choice

actions that are taken quickly and effectively

any action that does not endanger personal property

X actions that are reasonable in the circumstances and would be conducted by any

reasonable person

any action that can save a life




24. Size the low pressure piping system shown in figure. What is the pipe size for pipe B (#15-24)(Size the low pressure piping system shown in figure. What is the pipe size for pipe B (#15-24))

Correct Choice

NPS 1 1/12

NPS 1

X NPS ½

NPS 2






25. What is the organization that publishes tables of symbols found on piping drawing?(#15-25) (What is the organization that publishes tables of symbols found on piping drawing?

(#15-25))

Correct Choice

American National Standard Institute

Canadian Standards AssociationInternational Organization for Standardization

X all of the above




26. What diameter must a test gauge be? (#15-26) (What diameter must a test gauge be? (#15-26))

Correct Choice2 inch

X a minimum 3 inch diameter

a minimum 1/4 inch NPT

2 1/2 inch




27. How can combustible gases be ventilated, provided it is safe to do so? (#15-27) (How cancombustible gases be ventilated, provided it is safe to do so? (#15-27))

Correct Choice

using an exhaust fan

X open doors and windows

using the fan on the furnace

both A and B






28. An appliance rating plate specifies a minimum clearance of 36 inches. What clearance can beused from the sides and rear if a 1/4 inch insulating billboard is installed and spaced 1 inch from

the combustible material?

Correct Choice

X 18 inches

12 inches10 inches

36 inches




29. Which type of personal protection should be used when working with chisels? (#15-29)

Correct Choicefall protection

respirator

X eye protection

hearing protection




30. Name the Ontario Act that directly related to safety and standards within the fuels industry?(#15-30)

Correct Choice

the Fuel Safety Act

X the Technical Standards and Safety Act

the Technical Fuel and Pressure Safety Act

the Mandatory Fuel Standards Act






31. Identify the correct blade to be used in a chop saw when cutting non-Ferris metals andplastic? (#15-31) (Identify the correct blade to be used in a chop saw when cutting non-Ferris

metals and plastic? (#15-31))

Correct Choice

X a carbide-tipped blade

an abrasive bladea steel-toothed blade

all of the above




32. What is the regulatory authority that oversees the safety of both natural gas and propane?

(#15-32)

Correct Choice

X A) CSA

B) TSSA

C) CGA

D) AGA




33. If an employee noticed a contravention of the safety act or regulation, or a job site hazard,

who would the employee first report these situations to? (#15-33) (If an employee noticed a

contravention of the safety act or regulation, or a job site hazard, who would the employee first

report these situations to? (#15-33))

Correct Choice

X employer or supervisor

local law enforcement official

TSSA

Canadian Standard Association






34. What would accompany the blueprint for a large construction project? (#15-34) (What wouldaccompany the blueprint for a large construction project? (#15-34))

Correct Choice

a product index

a list of materials

X specifications

none of the above




35. Which type of pipe cutter is best for cutting pipe where there is limited space for rotation?

(#15-35) (Which type of pipe cutter is best for cutting pipe where there is limited space for

rotation? (#15-35))

Correct Choice

a two wheel cover

a three wheel cutter

a four-wheel cutter

X both B and C




36. What is a good response to a customer who is demanding unreasonable or impossible

performance? (#15-36) (What is a good response to a customer who is demanding unreasonable

or impossible performance? (#15-36))

Correct Choice

Confirm their request is possible but that it will cost considerably more money

tell them that their request is not possible and they should leave these decisions to theexperts

X calmly and patiently identify what you are able to do and not what you are unable to do

firmly restate what you are able to do and offer them that if they are not happy they can

hire another company






37. A beam clamp is an example of ___________ type of fastener. (#15-37) (A beam clamp is anexample of ___________ type of fastener. (#15-37))

Correct Choice

general

X pipe

electrical

all of the above




38. When planning an appliance installation, where would you locate the height and space

requirements? (#15-38)

Correct ChoiceCSA B149.1 gas code

X the manufacturers product specifications

product sales brochure

none of the above




39. When the scale on a drawing is identified as 1:100, how much larger will the object becompared to the drawing? (#15-39) (When the scale on a drawing is identified as 1:100, how much

larger will the object be compared to the drawing? (#15-39))

Correct Choice

10 X

X 100 X

1000 X

50 X






40. Propane-burning appliances installed in a mobile home must comply with which standards?(#15-40)

Correct Choice

Clause 11 of the B149.2-10 and the national building code

X Clause 11 of the B149.2-10and the CSA Z240.1

Clause 11 of the B149.2-10 and the CSA Z240.2

Clause 11 of the B149.2-10 and the national fire code




41. Eating or smoking on the customer's property is an example of poor: (#15-41) (Eating or

smoking on the customer's property is an example of poor: (#15-41))

Correct Choicecommunication

X workplace behavior

appearance

attitude




42. Where in your province's Occupational Health and Safety Act are the duties of employers andother persons described? (#15-42) (Where in your province's Occupational Health and Safety Act

are the duties of employers and other persons described? (#15-42))

Correct Choice

the duties of employers and other persons are always described in section 3

provincial occupational health and safety act do not identify employer responsibilities

X this will vary from province to province

none of the above






43. What color code is type K copper pipe? (#15-43) (What color code is type K copper pipe?(#15-43))

Correct Choice

red

X green

blue

yellow




44. Who is authorized to work on liquid propane systems? (#15-44)

Correct Choice

X a holder of a 'LP' certificatea licensed gas technician

the propane supplier

any of the above




45. Which type of grinder is commonly used to grain bevels and clean weld spatters of pipes? (#15-

45) (Which type of grinder is commonly used to grain bevels and clean weld spatters of pipes?(#15-45))

Correct Choice

A bench grinder

X a portable angle grinder

a pedestal grinder

both A and C






46. Propane that is offered for transport must comply with which regulations? (#15-46)(Propane that is offered for transport must comply with which regulations? (#15-46))

Correct Choice

the provincial WHMIS requirements

X the Transport Canada Dangerous Goods regulation

the National Energy Board Propane Transportation Act

none of the above




47. (#15-47) What length should the pipe be cut to be properly sized for the application shown.

(#15-9-1)

Correct Choice20 inches

X 21 inches

22 inches

24 inches




48. Establishing eye contact when speaking and taking notes demonstrates good: (#15-48)(Establishing eye contact when speaking and taking notes demonstrates good: (#15-48))

Correct Choice

X communication

workplace behavior

appearance

attitude






49. Which best defines the term specific gravity: (#15-49)

Correct Choice

a comparison between the speed at which items fall and the speed at which a steel ball

falls

X a comparison between the weight of a volume of gas (liquid) and equal volume of air

(water)a comparison between the gravity at sea levels and the gravity at the installation elevation

none of the above




50. When can a propane line supplying a furnace in a mobile home or recreational vehicle be

routed through a combustion or fresh air make-up opening in the furnace base? (#15-50)

Correct Choice

when the propane piping through the furnace base consists of a single piece

when the piping is schedule 80 steel

provided that any connection to this piping is made above the level of the top of thefurnace base and below the lowest level of the furnace base extension

X both A and C




51. What type of fire would a water-based fire fire extinguisher be used to fight? (#15-51) (What

type of fire would a water-based fire fire extinguisher be used to fight? (#15-51))

Correct Choice

X A

B

C

D






52. Who publishes the B149 code handbook? (#15-52) (Who publishes the B149 code handbook?(#15-52))

Correct Choice

ASTM

ASME

NFPA

X CSA




53. How can one recognize an inspector? (#15-53) (How can one recognize an inspector? (#15-53))

Correct Choice

their picture will be located on the official websiteall inspectors wear white hardhats the say inspector

their business card will identify their job function as inspector

X by examining their identification badge or card




54. What is combustion air? (#15-54) (What is combustion air? (#15-54))

Correct Choice

The air required to operate the blower fan.

The air needed for the draft regulator.

X The air required for satisfactory combustion of a gas.

The air required for complete furnace operation.




55. What does MSDS stand for? (#15-55) (What does MSDS stand for? (#15-55))

Correct Choice

Material safety disconnect switch

Mandatory safety data sheet

X Material safety data sheet

Material safety daily sheet






56. For self protection you would need? (#15-56)

Correct Choice

Hard hat, gloves, glassesGlasses, boots, respiratory

Respiratory, gloves, hard hat

X All the above




57. What is the explosion limit of natural gas? (#15-57) (What is the explosion limit of natural

gas? (#15-57))

Correct Choice

0.4% to 0.14%

10% to 1%

3% to 15%

X 4% to 15%




58. What is the ignition temperature of natural gas? (#15-58) (What is the ignition temperatureof natural gas? (#15-58))

Correct Choice

1020 F

1000 F

X 1300 F

900 F






59. What is the flame temperature of natural gas? (#15-59) (What is the flame temperature ofnatural gas? (#15-59))

Correct Choice

1000 F

2025 F

X 3600 F

4500 F




60. What is the air to gas ratio for propane? (#15-60) (What is the air to gas ratio for propane?

(#15-60))

Correct ChoiceX 10 to 1

0.5 to 1

1 to 25

21 to 1




61. What is the expansion rate of propane? (#15-61) (What is the expansion rate of propane?(#15-61))

Correct Choice

600 to 1

X 270 to 1

10 to 1

1 to 600




62. What is the heating value of natural gas per ft cubed? (#15-62)

Correct Choice

A) 2025 BTU

B) 1200 BTU

C) 3500 BTU

X D) 1000 BTU






63. Who is the testing agency that certifies venting? (#15-63) (Who is the testing agency that

certifies venting? (#15-63))

Correct Choice

A) CGA

B) TSSA

C) CSA

X D) ULC




64. Why are electric power tools equipped with three-prong electrical plugs? (#15-64) (Why are

electric power tools equipped with three-prong electrical plugs? (#15-64))

Correct Choice

the third prong is a spare

the third prong is a guide to ensure the correct polarity

the third prong is a backup power feed to ensure performance

X the third prong is a ground for protection in case of short circuit




65. What is the best thing to do if a customer becomes unruly or threatening? (#15-65) (What isthe best thing to do if a customer becomes unruly or threatening? (#15-65))

Correct Choice

X Seek assistance, and leave if necessary

warn them that you are trained in self defense

ignore the behavior

make jokes to remove the tension from the situation






66. (#15-66) When heavier hydrocarbons are removed from natural gas. It is then referred to as_______ gas.

Correct Choice

X dry

wet

sweet

sour




67. Is the gas technician/fitter permitted to replace electrical components that are directly related

to the operation of the gas appliance? (#15-67) (Is the gas technician/fitter permitted to replace

electrical components that are directly related to the operation of the gas appliance? (#15-67))

Correct Choice

yes

no

X only when permitted by the Act, Regulations or bulletins

only when permitted by the manufacturer maintenance instructions




68. In which situation would an electrical power tool not require grounding plug? (#15-68) (In

which situation would an electrical power tool not require grounding plug? (#15-68))

Correct Choice

when the tool has 'no grounding required' identification symbol

X when the tool is designated 'double insulated'

when the tool is equipped with a removable ground plug

when you are not using the tool in wet locations






69. What are the components of the fire triangle? (#15-69) (What are the components of the firetriangle? (#15-69))

Correct Choice

heat, fuel, CO2

heat, fuel CO

heat, heat, O3

X heat, fuel, O2




70. The maximum pressure drop permitted on a natural gas piping system with a supply pressure

less than 7 inches w.c. Is: (#15-70) (The maximum pressure drop permitted on a natural gas

piping system with a supply pressure less than 7 inches w.c. Is: (#15-70))

Correct Choice

0.25 inch w.c.

X 0.5 inch w.c.

1.0 inch w.c

3.5 inch w.c.




71. Why is asking the right questions in the right way important when dealing with customer

concerns? (#15-71) (Why is asking the right questions in the right way important when dealing

with customer concerns? (#15-71))

Correct Choice

it is effective in the proper identification of the problem

it is effective in demonstrating your knowledge and grasp of the subject

it is effective in making the customer feel that they are a part of the process

X both A and C






72. Why should park your service vehicle on the street? (#15-72) (Why should park your servicevehicle on the street? (#15-72))

Correct Choice

the risk of damaging the objects on the customer's driveway is eliminated

oil or other fluid spills will not damage the customers driveway

children will be less likely to enter or damage your vehicle

X all of the above




73. Where would a service technician locate information on a specific appliances service

problems? (#15-73) (Where would a service technician locate information on a specific appliances

service problems? (#15-73))

Correct Choice

ask.com

CSA product listing records

provincial products registration records

X the manufacturers service bulletins




74. What tool is used to cut external threads on pipe? (#15-74) (What tool is used to cut external

threads on pipe? (#15-74))

Correct Choice

a file

a hacksaw

a crimping tool

X pipe dies






75. What type of chart compares individual parts in relation to their total as a sector of a circulararea? (#15-75) (What type of chart compares individual parts in relation to their total as a sector

of a circular area? (#15-75))

Correct Choice

flow chart

line chartX pie chart

bar chart




76. Identify the procedure to obtain a field approval of an appliance requiring testing and

inspection: (#15-76) (Identify the procedure to obtain a field approval of an appliance requiring

testing and inspection: (#15-76))

Correct Choice

contact CSA who will provide a certification specialist to conduct the approval

obtain a copy of the B149.3 code for field approvals and follow the instructions contained

therein

contact the local gas inspector, who will approve the equipment as part of the installation

permit.

X approval procedures are identified in the local act, regulations and bulletins




77. Why must the RPM rating of a grinding wheel match the RPM of the grinder? (#15-77) (Whymust the RPM rating of a grinding wheel match the RPM of the grinder? (#15-77))

Correct Choice

It will void the warranty if it doesn't match

the incorrect RPM can overload the grinder

X the wheel could shatter if the RPM rating is incorrect

the incorrect RPM can cause a whistle sound that can damage hearing






78. After listening to a customer's explanation of the problem, what should you always do? (#15-78)

Correct Choice

repeat word like 'I understand' and 'really?' so show you are listening

X restate the explanation to the customer to ensure it has been properly understood

tell the customer that it will not be a problem as you have seen much worse

ask the customer about sports to get their mind off of their problems




79. What is the speed of a propane flame in inches per second? (#15-79)

Correct Choice

10X 11

12

14




80. The expansion ratio of propane from a liquid to a gas at atmospheric pressure is: (#15-80)

(The expansion ratio of propane from a liquid to a gas at atmospheric pressure is: (#15-80))

Correct Choice

X 270 - 1

470 - 1

600 - 1

800 - 1




81. Who can remove a 'DO NOT USE' notice that has been affixed to an appliance? (#15-81)(Who can remove a 'DO NOT USE' notice that has been affixed to an appliance? (#15-81))

Correct Choice

anyone who has verified the appliance is in safe working order

any inspector or CSA staff member

only members of the Canadian Gas Association

X a certificate holder may remove the notice if he/she is satisfied that corrective action hasbeen taken.






82. What are the two common thread patterns found on bolts used by the gas technician? (#15-82)

(What are the two common thread patterns found on bolts used by the gas technician? (#15-82))

Correct Choice

National Course Thread

National Fine Thread

American Street Thread

X both A and B




83. Atoms are made of particles including: (#15-83) (Atoms are made of particles including: (#15-

83))

Correct Choice

croutons

X electrons

pretrons

none of the above




84. What is a schematic representation of process also know as? (#15-84)

Correct Choice

X flow chart

line chart

pie chart

bar chart






85. A gas with an ignition temperature of 920 F and the chemical designation of C3H8 iscommonly referred to as? (#15-85) (A gas with an ignition temperature of 920 F and the chemical

designation of C3H8 is commonly referred to as?)

Correct Choice

X propane

butanenatural gas

none of the above




86. How will taking notes when the customer is explaining the problem help? (#15-86) (How will

taking notes when the customer is explaining the problem help? (#15-86))

Correct Choice

X you assure the customer that you will not forget why you are there

you will have valuable information to include in the final report

you are indicating to the customer that you value their input

you can create a checklist to ensure the problem is resolved when you have completedyour work




87. Which Canadian Electrical Code Rules apply to circuits supplying power to heating

equipment that uses solid, liquid or gaseous fuels? (#15-87) (Which Canadian Electrical Code

Rules apply to circuits supplying power to heating equipment that uses solid, liquid or gaseousfuels? (#15-87))

Correct Choice

rules 16-802 to 16-808

rules 10-200 to 10-202

rules 26-602 to 26-610

X rules 26-802 to 26-808






88. Can propane be transferred from one container to another? (#15-88) (Can propane be

transferred from one container to another? (#15-88))

Correct Choice

yes, if the transfer is conducted at a licensed facility with certified equipment

X yes, if the transfer is conducted by a trained person holding a certificate recognized by theauthority having jurisdiction

yes, if the transfer is conducted in a pit to contain any leakage

no




89. What is the purpose of flue gas analysis? (#15-89) (What is the purpose of flue gas analysis?

(#15-89))

Correct Choice

to check the temperature of operation

to check for the composition of the gasses being exhausted

X to check for the safety and efficiency of operation

to confirm emission regulation compliance




90. Why must an ohmmeter never be connected into a live circuit? (#15-90) (Why must an

ohmmeter never be connected into a live circuit? (#15-90))

Correct Choice

You will receive a false reading

the resulting current could damage the meter

the resulting current could cause the battery to explode

X both B and C






91. What is the minimum clearance between the front of a swimming pool heater and acombustible material? (#15-91) (What is the minimum clearance between the front of a swimming

poolp heater and a combustible material? (#15-91))

Correct Choice

18 inches

24 inches36 inches

X 48 inches




92. Who can service gas equipment, if under the direct supervision of a certificate holder? (#15-

92) (Who can service gas equipment, if under the direct supervision of a certificate holder? (#15-

92))

Correct Choice

X another certificate holder

anyone

any person who has read the appliance manual

both A and C




93. When is an object considered to be electrically neutral? (#15-93)

Correct Choice

when it has the same number of electrons and neutrons

when it has the same number of neutrons and protons

X when it has the same number of electrons and protons

when it has the same number of neutrons, protons and electrons




94. Where can the regulations covering general construction be found? (#15-94)

Correct Choice

X this will vary from province to province

general construction requirements are not contained in the regulation

general construction requirements are contained in Part One

none of the above






95. Assuming there is no emergency, who may remove a lock used to lock-out equipment? (#15-95)

(Assuming there is no emergency, who may remove a lock used to lock-out equipment? (#15-95))

Correct Choice

anyone with a key

anyone with permission from the owner

X the person who installed the lock

no one



Multiple Response, 1 attempt(s) permitted.

96. Which of the following electrical sources could cause a fire in the workplace? (#15-96) (Which

of the following electrical sources could cause a fire in the workplace? (#15-96))

Correct Choice

light bulbs in contact with fine dust or oily surfaces

broken electrical wiring

unshielded switches in dusty areas

X all of the above




97. Which gas can be used to purge air out of systems with pipe 4 inch and larger? (#15-97)(Which gas can be used to purge air out of systems with pipe 4 inch and larger? (#15-97))

Correct Choice

X nitrogen

line gas

carbon dioxide

both A and C






98. What best identifies the way in which graphs and charts are intended to be used? (#15-98)(What best identifies the way in which graphs and charts are intended to be used? (#15-98))

Correct Choice

for graphical presentation of information

for graphical analysis

for computing or determining values

X all of the above




99. Which element is required to form an electrical circuit? (#15-99) (Which element is required

to form an electrical circuit? (#15-99))

Correct Choicean energy source

a conductor

a load

X all of the above



Multiple Response, 1 attempt(s) permitted.

100. who must provide workers with equipment and training that are required by law? (#15-100)(who must provide workers with equipment and training that are required by law? (#15-100))

Correct Choice

the local CSA representative

the worker

the authority having jurisdiction

X the employer




101. What will displaying arrogant body language demonstrate to the customer? (#15-101) (Whatwill displaying arrogant body language demonstrate to the customer? (#15-101))

Correct Choice

you fully understand the problem and are competent to correct it

X that you are far too skilled for such a low level task

they are fortunate to have someone with your advanced skills looking after their problems

none of the above






102. Where may natural gas compressors be installed? (#15-102) (Where may natural gas

compressors be installed? (#15-102))

Correct Choice

in the residential occupancies as defined by the national building code

in industrial occupancies as defined by the national building code

where approved by the authority having jurisdiction

X both B and C




103. Which code contains the requirements governing electrical circuits for gas-fired equipment?

(#15-103)

Correct Choice

the gas code

the building code

X the electrical code

the fire code




104. What is the ignition temperature of natural gas measured in degrees Fahrenheit? (#15-104)(What is the ignition temperature of natural gas measured in degrees Fahrenheit? (#15-104))

Correct Choice

920

1240

X 1300

1600






105. Which of the following is an inert gas? (#15-105) (Which of the following is an inert gas?(#15-105))

Correct Choice

X nitrogen

hydrogen

methane

air




106. What is the boiling point of natural gas? (#15-106) (What is the boiling point of natural gas?

(#15-106))

Correct ChoiceA) -2158°c

B) 25°f

X C) -260°f

D) 285°f




107. Can a G3 certificate holder, under direct supervision, install gas piping to a 450 cfh boiler?(#15-107)

Correct Choice

X Yes

No

Only on installed outdoor

Only installed indoor




108. What is the millivolt open test output of a thermocouple? (#15-108) (What is the millivoltopen test output of a thermocouple? (#15-107))

Correct Choice

10 to 15

20 to 25

25 to 35

X 20 to 30






109. What are transformers which produce a secondary voltage which is lower than the primary

called? (#15-109) (What are transformers which produce a secondary voltage which is lower thanthe primary called? (#15-108))

Correct Choice

X Step down transformers

Step up transformers

Auto transformers

Neutral transformers




110. What type of flashlight is needed by code to search for a gas leak? (#15-110) (What type of

flashlight is needed by code to search for a gas leak? (#15-109))

Correct Choice

X Class 1

Class 2

Class 3

All above




111. For a central furnace what would be the minimum clearance from combustible on the sides?

(#15-111) (For a central furnace what would be the minimum clearance from combustible on the

sides? (#15-110))

Correct Choice

12"

24"6"

X 1"






112. The primary use of a gas meter is? (#15-112) (The primary use of a gas meter is? (#15-112))

Correct Choice

Clock input

Leak test

X Consumption of gas

Dial accuracy




113. Can a compression fitting be used on copper tubing? (#15-113) (Can a compression fitting beused on copper tubing? (#15-113))

Correct Choice

Yes

X NoYes only if tubing is 1/2” or less

Yes only if a shut off valve is install




114. A vent passing though a roof line with a zero pitch should extend by? (#15-114)

Correct ChoiceX 2ft

3ft

4ft

6ft




115. If you read infinity on an analog meter what would this mean? (#15-115) (If you read

infinity on an analog meter what would this mean? (#15-115))

Correct Choice

Low voltage

High amps

X Broken wire

High limit open






116. Under OSHA what is the permissible exposure to CO level for 8 hours? (#15-116) (Under

OSHA what is the permissible exposure to CO level for 8 hours? (#15-116))

Correct Choice0 ppm of CO

10 ppm of CO

25 ppm of CO

X 35 ppm of CO




117. What would be the square footage of 20' long x 15' wide x 8' high of a building envelope?(#15-117) (What would be the square footage of 20' long x 15' wide x 8' high of a building

envelope? (#15-117))

Correct Choice

43 sq ft

100 sq ft

2400 sq ft

X 300 sq ft




118. Mercaptan is usually added to natural gas were? (#15-118) (Mercaptan is usually added to

natural gas were? (#15-118))

Correct Choice

Gas well

X Compressor station

City gate

Pipeline distribution gates






119. Who is responsible for the proper installation of the gas piping to the appliance? (#15-119)(Who is responsible for the proper installation of the gas piping to the appliance? (#15-119))

Correct Choice

Gas distributor

TSSA

The B149. -05 code book

X The installer




120. Spillage of flue gases at the appliance draft diverter would indicate that? (#15-120) (Spillage

of flue gases at the appliance draft diverter would indicate that? (#15-120))

Correct ChoiceAn updraft condition is present

There is excessive draft in the venting

X The venting system of the appliance is restricted or block

Low gas pressure to the appliance pilot valve




121. If the heat anticipator of a thermostat is set to low what probable condition would exist whenthe heating unit is operating? (#15-121) (If the heat anticipator of a thermostat is set to low what

probable condition would exist when the heating unit is operating? (#15-121))

Correct Choice

Short out gas valve

X Short out heat anticipator

Short cycle main burner

None of the above






122. How far should be the base of a ladder is from the building if the ladder is 36 feet high?(#15-122) (How far should be the base of a ladder is from the building if the ladder is 36 feet high?

(#15-122))

Correct Choice

10 ft

10.5 ft12.5 ft

X 12 ft




123. A ladder must extend above roof landing by? (#15-123) (A ladder must extend above roof

landing by? (#15-123))

Correct Choice

30"

X 36"

38"

24"




124. What is the expansion rate of propane? (#15-124) (What is the expansion rate of propane?

(#15-124))

Correct Choice

600 to 1

X 270 to 1

10 to 1

1 to 600






125. Who issues gas technician certificates in Ontario? (#15-125) (Who issues gas techniciancertificates in Ontario? (#15-125))

Correct Choice

Ontario Code Regulation Permits

T.S.A. Certification Gas Codes

C.S.A. Regulation and Certification

X Technical Standard Safety Authority




126. What is the flammability range of Butane? (#15-126)

Correct Choice

X 1.9% to 8.5%2.5% to 5.5%

12% to 74%

23.5% to 10%




127. What are the products of complete combustion? (#15-127) (What are the products of

complete combustion? (#15-127))

Correct Choice

carbon dioxide, nitrogen, soot, heat

heat, water, hydrogen, oxygen

water, carbon dioxide, oxygen, dioxide

X carbon dioxide, water, nitrogen




128. (#15-128) What is needed to start combustion? ((#15-128) What is needed to startcombustion?)

Correct Choice

fuel, carbon dioxide, air

X heat, oxygen, fuel

fuel, air, hydrogen

Ignition, propane, nitrogen






129. What is the air needed to operate a gas appliance safely? (#15-129) (What is the air needed

to operate a gas appliance safely? (#15-129))

Correct Choice

Primary air, mixing air, free air

X Combustion air, excess air, dilution air

Secondary air, primary air, natural air

Venting air, oxygen, excess air




130. What is the relative density of propane gas? (#15-130) (What is the relative density of

propane gas? (#15-130))

Correct Choice

152

0.6

X 1.52

0.06




131. What is air comprised of? (#15-131) (What is air comprised of? (#15-131))

Correct Choice

20% nitrogen 8% oxygen

X 80% nitrogen 20% oxygen

80% oxygen 20% nitrogen

80% hydrocarbon 20% excess air






132. What are the products of incomplete combustion? (#15-132) (What are the products ofincomplete combustion? (#15-132))

Correct Choice

Carbon dioxide, water, soot, heat

X Carbon monoxide,water, hydrogen, nitrogen

Soot, aldehydes, carbon monoxide, heat

aldehydes, carbon monoxide, soot




133. What type of air is premixed with gas prior to ignition? (#15-133)

Correct Choice

Excess airX Primary air

Combustion air

Dilution air




134. What type of air surrounds the flame for combustion? (#15-134) (What type of air

surrounds the flame for combustion? (#15-134))

Correct Choice

Venting air

Post secondary air

X Secondary air

Outside air




135. Dilution air is: (#15-135) (Dilution air is: (#15-135))

Correct Choice

X Air to cool hot flue gases

Air to needed for excess air

Air to start combustion

Air to ensure flame






136. How many symbols or classes of fire extinguishers exist? (#15-136) (How many symbols or

classes of fire extinguishers exist? (#15-136))

Correct Choice

two

three

ABC

X four




137. How many parts are each province's occupational health and safety act divided into? (#15-137) (How many parts are each province's occupational health and safety act divided into? (#15-

137))

Correct Choice

X This decision is up to the individual province to decide

6

12

4




138. What is the minimum clearance between the front, back and sides of a commercial clothesdryer and a combustible material? (#15-138) (What is the minimum clearance between the front,

back and sides of a commercial clothes dryer and a combustible material? (#15-138))

Correct Choice

36”

24”

X 18”12”






139. When a customer is upset they typically want: (#15-139) (When a customer is upset they

typically want: (#15-138))

Correct Choice

to be listened to

to be treated with respect

to have their problem taken seriously

X all of the above




140. What type of room heater is permitted to be installed in the bathroom? (#15-140) (What type

of room heater is permitted to be installed in the bathroom? (#15-140))

Correct Choice

indirect ventB vent

X direct vent type

none of the above




141. What is the best example of an appliance that should never be unplugged in order to obtain

electrical power? (#15-141) (What is the best example of an appliance that should never beunplugged in order to obtain electrical power? (#15-141))

Correct Choice

blow dryer and curling irons

television and stereo equipment

microwave

X refrigerators or freezers




142. What is the maximum filling density of propane containers? (#15-142) (What is the

maximum filling density of propane containers? (#15-141))

Correct Choice

95%

X 80%

75%

.80%






143. At 100 volts, what would be the amperage in a parallel circuit with a 10 ohm and a 12 ohm

resistance? (#15-143) (At 100 volts, what would be the amperage in a parallel circuit with a 10ohm and a 12 ohm resistance? (#15-143))

Correct Choice

22.30

20.50

X 16.6

18.46




144. If the parallel circuit had 23 amps with the same resistance, what will be the voltage? (#15-

144) (If the parallel circuit had 23 amps with the same resistance, what will be the voltage? (#15-144))

Correct Choice

110.00 volts

115.25 volts

122.60 volts

X 125.35 volts




145. What is the weight of one gallon of propane? (#15-145) (What is the weight of one gallon of

propane? (#15-145))

Correct Choice

1.42

X 4.241.51

15.14






146. What is the air to gas ratio for propane? (#15-146) (What is the air to gas ratio for propane?

(#15-146))

Correct Choice

X 10 to 1

0.5 to 1

1 to 25

21 to 1




147. What is the relief pressure of a propane tank? (#15-147) (What is the relief pressure of a

propane tank? (#15-147))

Correct Choice

250 Psig275 Psig

350 Psig

X 375 Psig




148. What is the relief pressure set at on propane cylinder? (#15-148) (What is the relief pressure

set at on propane cylinder? (#15-148))

Correct Choice

365 psig

X 275 psig

370 psig

375 psig




149. If you had 60 watts light bulb at 120 volts what would be the amperage? (#15-149) (If you

had 60 watts light bulb at 120 volts what would be the amperage? (#15-149))

Correct Choice

.10

X 0.5

0.05

0.10






150. What is the chemical composition of natural gas? (#15-150) (What is the chemical

composition of natural gas? (#15-150))

Correct Choice

CCH4

C4H

CH3

X CH4




151. When it has been determined that the voltage to a unit is approximately 115 Volts, which

range should an analog volt meter be set at? (#15-151) (When it has been determined that the

voltage to a unit is approximately 115 Volts, which range should an analog volt meter be set at?(#15-151))

Correct Choice

0-30v

X 0-250v

0-600v

0-1000v




152. On a 120 volt receptacle, the neutral connection terminals are: (#15-152) (On a 120 volt

receptacle, the neutral connection terminals are: (#15-152))

Correct Choice

Black

GoldX Silver

Green






153. What is the most common fire extinguishers used in the work place? (#15-153) (What is the

most common fire extinguishers used in the work place? (#15-153))

Correct Choice

ABD

BCD

CBA

X ABC




154. One horsepower equals_______ watts. (#15-154)

Correct Choice

340

X 750850

1000




155. Which meter is used to check for continuity? (#15-155) (Which meter is used to check for

continuity? (#15-155))

Correct Choice

Amp meter

X Ohm meter

Volt meter

Potentiometer




156. A solenoid valve is activated by a/an: (#15-156) (A solenoid valve is activated by a/an: (#15-156))

Correct Choice

X Electro-magnetic current

D.C. rectifier

Transformer

Transducer






157. Underground piping shall be tested for leaks: (#15-157) (Underground piping shall be tested

for leaks: (#15-157))

Correct Choice

X Hydrostatically

After being covered

With air pressure and a soap solution

With air pressure and a fluorescent dye




158. (#15-158) On a 120 volt receptacle, the line connection terminals are:

Correct Choice

Black

X Gold

Silver

Green




159. Which of the following best describes a device used to prevent an unsafe? Condition of

temperature, pressure, or liquid level? (#15-159) (Which of the following best describes a device

used to prevent an unsafe? Condition of temperature, pressure, or liquid level? (#15-159))

Correct Choice

Roll out switch

X Safety control

Fan control

Different switch






160. Transformers which produce a secondary voltage which is higher than the Primary are saidto be: (#15-160) (Transformers which produce a secondary voltage which is higher than the

Primary are said to be: (#15-160))

Correct Choice

Step down transformers

X Step up transformersAuto transformer

Neutral transformers




161. (#15-161) One watt equals ______ Btuh. ((#15-161) One watt equals ______ Btuh.)

Correct Choice0.34

X 3.41

3,416

34,120




162. Which of the following is the best location for residential central heating thermostat? (#15-162) (Which of the following is the best location for residential central heating thermostat? (#15-

162))

Correct Choice

In the duct near the furnace room

In the basement near the furnace

X In the living room or hallway

In the front entrance




163. What is current? (#15-163) (What is current? (#15-163))

Correct Choice

X A measure of the quantity of electron flow.

A measure of the amount of electrical pressure.

A measure of how much a circuit will limit current flow.

A measure of the amount of power used by a circuit.






164. A watt is a unit of measure of: (#15-164) (A watt is a unit of measure of: (#15-164))

Correct Choice

The quantity of electrons flowing

The amount of electrical pressure

How much a circuit will limit current flow

X The amount of power used by a circuit




165. If resistance is constant in a resistive circuit when current increases what happens? (#15-

165) (If resistance is constant in a resistive circuit when current increases what happens? (#15-

165))

Correct Choice

Power decrease

X Voltage increase

Resistance decrease

Amperage stay consistence



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