energy, power & transportation technology · pneumatic, hydroelectric, solar wood, coal,...
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Energy, Power & Transportation Technology
Chapter 7 Introduction to Power
Use the Textbook Pages 143157 to help answer the questions
Energy, Power & Transportation Technology
Energy, Power & Transportation Technology
Why You Learn So Well in Tech & Engineering Classes
Energy, Power & Transportation Technology 1. ________ is the application of force that moves an object a certain distance.
Energy Work Power
Pg. 144
Energy, Power & Transportation Technology
2. ________ is the rate at which work is done.
Energy Work Power
Pg. 144
Energy, Power & Transportation Technology
3. A power __________________ harnesses, converts, transmits, and controls useful heat, light, or motion.
System Method Goal
Pg. 144
Energy, Power & Transportation Technology 4. Three types of power systems are : ___________, __________ & ________.
Electrical, Mechanical, Fluid Pneumatic, Hydroelectric, Solar Wood, Coal, Petroleum
Pg. 144
Energy, Power & Transportation Technology 5. ___________ are devices used to manage (control & change)mechanical power.
Toys Methods Machines
Pg. 144
Energy, Power & Transportation Technology 6. The six simple machines used to control and change mechanical power are:
W SLIP W is the hook to remember them
Pg. 146
Energy, Power & Transportation Technology 7. The two types of fluid power systems are:
Electrical & Mechanical Hydraulic & Pneumatic Solar & Wind
Pg. 146
Energy, Power & Transportation Technology
8. Pneumatic systems use a ______, such as compressed air or compressed nitrogen to transmit power.
Gas Oil Solid
Pg. 146
Energy, Power & Transportation Technology
9. Hydraulic systems use a ____________, such as mineral oil, synthetic oil or even water to transmit power.
Liquid Vapor Solid
Pg. 146
Energy, Power & Transportation Technology 10. ____________ is the force behind (involved in causing) the movement in a
power system.
Energy Work Effort Pg. 148
Energy, Power & Transportation Technology 11. ____________ is twisting or turning force. It is expressed in footpounds.
Torque Pressure Effort Pg. 148
Energy, Power & Transportation Technology 12. _______________ is force per unit of area:
Expressed by pounds per square inch in a fluid system.
Torque Pressure Effort Pg. 148
Energy, Power & Transportation Technology
Energy, Power & Transportation Technology 13. The force or push in an electrical power system is expressed in ___________.
Amperage Resistance Voltage
Consumer has the resistance Source has the push or force Conductive Path carries the flow
Pg. 149
Energy, Power & Transportation Technology 14. ________ expresses a certain quantity of power per unit of time.
(wattage or horsepower)
Rate Distance Time
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Energy, Power & Transportation Technology 15. The unit of measure for rate of flow in electrical systems is the __________.
(6.28 x 1018 electrons/sec)
Ampere Volt Ohm
Pg. 149
Energy, Power & Transportation Technology 16. Rotational movement or rate is expressed in __________ per ______. (RPM)
Orbits per Year Revolutions per Minute Cycles per Second
Pg. 150
Energy, Power & Transportation Technology 17. All power systems, whether mechanical, fluid, or electrical, will have these
9 things in common:
An __________________ Source A ___________________ Method A _____________________ Path A ______________ Medium ___________________ Devices ______________Gaining Devices ________________ Systems ___________________ Devices A _______ or Output or Final Goal
Word Bank: Conversion Energy Transmission Advantage Protection Measuring Load Control Storage
Pgs. 150 & 151
Energy, Power & Transportation Technology 18. The basic mathematical formula for work accomplished is:
Work = ______________ x _________
Force x Distance Revolutions x Time Power x Energy
Work Force Distance
Pg. 152
Energy, Power & Transportation Technology 19.The 2 measuring systems we use are: 1) _____________ & 2) __________
U.S. Customary & Metric American & European Earth & Alien
Not just for linear measurement!
Pg. 156
Energy, Power & Transportation Technology
Important Concepts, Definitions & Terms to Know
Class Notes & Priority Items to Know for Tests
Main Ideas
__________
__________
__________
Supporting Details
________________
________________
________________
TOP CRISS 2 Column Notes
Energy, Power & Transportation Technology
Important Concepts, Definitions & Terms to Know
Class Notes & Priority Items to Know for Tests
TOP CRISS Highlight Your Study Guides Before Tests
Energy, Power & Transportation Technology
Important Concepts, Definitions & Terms to Know
Class Notes & Priority Items to Know for Tests
TOP CRISS Read 3 Times
Energy, Power & Transportation Technology
Important Concepts, Definitions & Terms to Know
Class Notes & Priority Items to Know for Tests
TOP CRISS Ask Yourself These Questions
Energy, Power & Transportation Technology
• Work: the application of force that moves an object a certain distance
• Force: any push or pull on an object
• Power: the rate at which work is done
• Machines: devices used to “manage” (control or change) mechanical power
Energy, Power & Transportation Technology
• Six Simple Machines
–W Wedge – S Screw – L Levers 1 st class, 2 nd class, 3 rd class – I Inclined Plane – P Pulley –W Wheel & Axle
Energy, Power & Transportation Technology
• 2 Types of Fluid Power Systems
– Hydraulic use compressed air or nitrogen gas
– Pneumatic use liquids such as oils or water
Energy, Power & Transportation Technology
• Effort: the force behind the movement in a power system
• Torque: twisting force or turning force
• Pressure: force per unit of area
Energy, Power & Transportation Technology
• Rate: the speed at which something moves
• RPM: unit of measure for rotational movement
• Voltage: electrical unit for force or push or pressure
• Amperage: electrical unit for rate (1 ampere = 6.28 x 10 18 electrons per second)
Energy, Power & Transportation Technology
• 9 things that power systems have in common:
– An Energy Source – A Storage Medium – A Control System – A ConversionMethod – A Transmission Path – A Load or Output or Final Goal – Protection Devices – Measuring Devices – AdvantageGaining Devices
Energy, Power & Transportation Technology
• Formula for Work
Work = Distance x Force expressed in footlbs.
• Measuring Systems
– U.S. Customary based on the inch
– SI (systems international) Metric based on the meter
Power & Transportation Technology
• Simple Machines (W SLIP W) – Wedge – Screw – Levers
• 1 st class • 2 nd class • 3 rd class
– Inclined Plane – Pulley – Wheel & Axle
Power & Transportation Technology
• Simple Machines (W SLIP W) – Wedge – Screw – Levers
• 1 st class • 2 nd class • 3 rd class
– Inclined Plane – Pulley – Wheel & Axle
Power & Transportation Technology • Six Simple Machines SelfQuiz
#1.
#2.
#3. #4.
#5.
#6.
Energy, Power & Transportation Technology
Energy, Power & Transportation Technology
Fractional Measurement U.S. Customary = Standard
Energy, Power & Transportation Technology Fractional Measurement
U.S. Customary = Standard Fractional Measurement
SI Systems International = Metric
Energy, Power & Transportation Technology
Thread Pitch Gauge
Determining Thread Coarseness
UNC example ¼ x 20 x 2”
SI Metric example 10 x 1.5 x 300mm
Energy, Power & Transportation Technology
Digital Multimeter Analog Multimeter
Energy, Power & Transportation Technology
Tachometer
Rube Goldberg Machine
Torque Wrench