en0158.a with light bulbs
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UTILITIES I EXAMINATIONModule/SubCourse: EN0158 Edition: A
Situation: For questions 1 and 2 use the diagram below:
Figure 1.1. What is the total resistance of this circuit? (Refer to Figure 1)
24 Ohms
48 Ohms
12 Ohms
20 Ohms
2. What is the current flowing though the circuit? (Refer to Figure 1)
1.0 Amps
0 Amps
2.0 Amps
0.5 Amps
Situation: You are an engineer utilities officer on the staff of the communications zone engineer. You have been assigned the job of preparing the specifications for the water distribution system for the installations shown in the figure below. The following information applies to these installations:
1. The hospital is to be a 1000-bed unit with flush toilets.
2. The staging area will accommodate 8,000 men and will have flush toilets and bathing facilities. The water pressure at the staging area must be a minimum of 25 PSI.
3. Facilities at the wharf will be capable of supplying ships with a total of 75,000 gallons of water every 10 hours.
4. The jungle training area is to accommodate one division of 18,000 men and 2,500 vehicles. Water will be provided for cooking and drinking purposes and for vehicle operations only.
5. A satisfactory water source has been developed 2.5 miles inland. The water will be treated at this source. The minimum pressure required at all delivery points except the staging area will be 12 PSI. The main line from the source to the cross will be 8-inch pipe.
6. Elevations above sea level for the various installations are as indicated in the figure below.This situation pertains to questions 3 through 7.
Figure 2.3. You will have to provide water to the staging area at the rate of (Refer to Figure
2)
284 GPM
834 GPM NO
174 GPM
139 GPM
4. How much water must you supply to the jungle-training center? (Refer to Figure 2)
30 GPM
77 GPM
63 GPM
45 GPM
5. You will be required to supply water to the wharf site at a rate of ? (Refer to Figure 2)
125 GPM
750 GPM NO
363 GPM
233 GPM
6. Assume that the available head of water at the cross is 36.2 feet and that the staging area will require 150 GPM. What size pipe should you use for branch #1? (Refer to Figure 2)
6 inch
8 inch
2 inch
4 inch
7. Assume that the available head of water at the cross is 28.4 feet, and that the hospital area will require 85 GPM. What size pipe should you sue for branch #3? (Refer to Figure 2)
1 inch
2 inch
1 ¼ inch
4 inch
8. The three types of pressure include all except:
Atmospheric
Gage
Absolute NO
Cylinder YES!!!!
9. R-22 refrigerant is stored in what color cylinder?
Light green with orange band
Orange with yellow band
Orange
Light Green
10. What is the area in square feet that should be provided for a sludge drying bed without drains for a sewage contributing population of 2,500?
10,000 sqft <-PROBABLY?
7,500 sqft
15,000 sqft
11,500 sqft NO
11. _____________ products in sewage make treatment difficult, and ___________ vapors create an explosion hazard in manholes and pipes.
Petroleum
Biological
Caustic
Organic
12. What is the BOD required for 5,000 people in a theater of operation installation?
270 lbs/day
200 lbs/day
1,000 lbs/day
1350 lbs/day NO
13. How many BTUs must be removed from 50lbs of water at 75 degrees Fahrenheit to form solid ice at 32 degrees Fahrenheit?
7200 BTU
9350 BTU
2150 BTU NO
8750 BTU
14. Which utilities team is divided into two shifts to provide continuous operations?
GJ
HE
HJ
GE NO
15. Waterborne sewage is _______ percent or more water.
90.4
77.9
58.6
99.8
16. The ___________ or running trap may be used for multiple installations such as sinks or urinals.
Drum Trap
P-Trap
U-Trap
S-Trap
17. __________ is the term used to indicate negative gage pressure.
Head Loss
Suction Head
Suction Lift
Static Head
18. What wire size is required for a 240V single phase load 400ft away from the power source which draws 90A at full load?
2/0 AWG
2 AWG
4/0 AWG
6 AWG
19. Which of the below is not considered a basic type of water supply and distribution systems?
Collection
Direct Pumping
Gravity
Combination
20. Early rehabilitation of facilities for immediate military need are most efficiently accomplished by_____________.
Military contractors
Military engineers
Local civilians
All of the above NO
21. ___________ is essentially a controlled rotting or putrification which changes settled solids from a complex organic material to a stable and inoffensive earthlike material.
Settling
Cestpooling
Sludge drying
Digestion
22. A waste pipe carries the discharge from any fixture, except __________, to the soil or waste stacks or directly to the house drain.
Water closets
Lavatories
Showers
Sinks
23. Which of the following is not a common temperature scale?
Fahrenheit
Absolute
Celsius
Centigrade
24. A transformer operational fault is indicated by which of the following:
Abnormal heat
Smoke
Abnormal noise
All of the above
Figure 25-1.
25. Refer to the diagram above. What is the voltage measured across light bulb #2?
4.8 Volts
6 Volts
10 Volts
12 Volts
26. An 8-inch horizontal drainage pipe with a ? inch fall per foot can support what number of fixture units?
2240
1600 NO
940
1920
27. A ________ is frequently inserted in a main line at points where branches may be required in the future expansion of the area.
Tee
Cross
Y-Branch
Tee, reducing
28. A plumbing system, in its simplest form, consists of one _________ pipe leading to a fixture and one _________ pipe taking the wastewater away from the fixture.
Supply, drain
Supply, branch
Main, branch
Main, drain
29. Secondary treatment of effluent is not accomplished by which of the following methods?
Digestion
Irrigation
Use of Oxygen Ponds
Sand Filtering
30. Transmission and distribution lines normally receive ____________ damage in comparison with power stations.
Major
Considerable
Catastrophic
Little
31. That body, gas, or liquid which reduces heat is a _____________.
Condenser
Evaporator
Refrigerant
Insulator
32. Cementing of joints is common practice in ___________ drainage and waste systems.
Surface
Exposed
Underground
Storm
33. Three phase motors will ____________ when two of the three phase inputs are reversed.
Overheat
Rotate in the same direction
Rotate in the opposite direction
Explode
34. Some of the more important basic principals for wartime rehabilitation include all of the following except:
Cannibalization
Expedient Repair
Damage Inventory
Substitution
35. What is the approximate capacity of galvanized iron pipe 1-inch in diameter over a 100ft length with a 30 PSI pressure source?
35 GPM
16 GPM
34 GPM
30 GPM
36. Which team provides for maintenance of utilities at installations with personnel numbering 8000 individuals?
HF
HG
GI
GG
37. Which formula properly depicts Ohm?s Law?
E = IR
I = E/R
R = E/I
All of the above
38. _____________ are relatively unimportant as compared to other utilities, and may not be damaged.
Sewer Mains
Water Storage Tanks
Oil Platforms
Incinerators
39. Hot water piping is laid out like cold water piping except that _________ are undesirable and paralleling cold waterlines should be avoided if possible.
Dead ends
Fixtures
Returns
Loops
40. ____________ is the most important item of sewer maintenance.
Manhole cover replacement
Repairing breaks
Sealing leaks
Clearing stoppages
41. The mission of engineer cellular teams include:
To provide command and administrative personnel for some brigade engineer units
To provide engineer technical, combat, service, and combat support where units of less than company size are required
To decrease the capability of fixed strength units where increments of more than company size are required NO
All of the above NO
42. __________ heat is heat added to a substance causing a rise in temperature but no change in state.
Fusion
Latent
Vaporization
Sensible
43. Damage to _____________ from sabotage or bombing is relatively unimportant.
Pumping Stations
Sewers
Cesspools/Septic Tanks
Treatment Units
44. Which of the following current sources is used to power heavy motors and equipment?
Direct Current
Three Phase Current
Single Phase Current
Alternating Current
45. Engineer installation support in the combat zone is provided for the COSCOM by teams from what TOE series?
29-600
5-500
29-500
5-520
46. The highest priority of power allocation is:
Civilian requirements
Industries beneficial to the military effort
Essential military needs, such as hospitals, ports, and shops
Essential public needs, such as water pumping, hospitals, sewage pumping stations
47. Which of the following is NOT a disinfecting agent for water treatment?
Chlorine
Nitrogen
Iodine
Oxygen
48. In designing a swage disposal system you estimate that your will require discharge of 3,000 GPM at a minimum allowable velocity of 4 ft/sec with a
ground slope of 0.45%. What pipe size will be required?
10 inch
15 inch
12 inch
18 inch
49. Utility engineer service teams can be one of the following classes except:
Area Surveying
Fire Fighting
Engineer Combat Support
Dredging
50. The ______________ is where the pressure of the refrigerant liquid is reduced so that it can begin its process of absorbing heat.
Condenser
Expansion Valve
Compressor
Evaporator