Of the four universal forces (strong, weak, electromagnetic, gravity), which two are most relevant to the study and implementation of renewable energy?


Strong and weak forces



Electromagnetic and gravitational forces



Gravity and weak forces



Electromagnetic and strong forces


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Question 2
What is the primary source of all energy on earth?


The Sun



Heat from the center of the Earth



Wind energy



Tidal forces caused by the Moon


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Question 3
What form of primary energy do Solar PV technologies use?


Chemical energy



Kinetic energy



Electromagnetic energy



Potential energy



Thermal energy



Gravitational energy


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Question 4
What form of primary energy do Wind Turbines use?


Potential energy



Kinetic energy



Electromagnetic energy



Chemical energy



Thermal energy



Gravitational energy


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Question 5
What form of primary energy do Hydroelectric Dams use?


Kinetic energy



Thermal energy



Gravitational energy



Potential energy



Chemical energy



Electromagnetic energy


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Question 6
What is the metric unit-of-measure for mass?


Foot



Pound



Kilogram



Meter


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Question 7
What is the metric unit-of-measure for length?


Kilogram



Foot



Pound



Meter


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Question 8
What is the metric unit-of-measure for Electrical Energy?


Watt (W)



Foot-pound (ft-lb)



Horsepower (hp)



Watt hour (Wh)


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Question 9
What is the metric unit-of-measure for Electrical Power?


Horsepower (hp)



Watt (W)



Watt hour (Wh)



Foot-pound (ft-lb)


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Question 10
Energy is always conserved.


True



False


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Question 11
When converting energy for one form to another (for example, sunlight to electricity), 100% efficiency is possible with careful engineering.


True



False


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Question 12
Which one of the following statements is false?


Like-charged particles attract each other. 



Charged particles create magnetic fields.



Electricity is defined as flowing electrons.



Conductors have loosely bound electrons.


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Question 13
Which one of the following statements is false?


The voltage of alternating current is constant.



Resistance is a measure of the opposition to current flow in an electrical circuit.



Ohm’s Law illustrates the relationship between voltage, current, and resistance in an electric circuit.



Electric current is the rate of charge flow of at a given point in an electric circuit.



Voltage measures the electric potential between two points in an electric circuit.


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Question 14
Electromagnetic generators use a rotating magnetic field to induce an electric current in coils of wire.


True



False


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Question 15
Solar PV panels and fuel cells also use magnetic fields to induce current in wires.


True



False


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Question 16
Which one of the following statements is true?


The voltage of current in transmission and distribution lines is constant from the generating plant to the end-user.



Long distance transmission lines use high voltages and large-diameter cables to reduce resistive line losses.



Transformers are used in transmission and distribution lines to convert DC current to AC, and vice versa.