Question

14. The power factor of a purely resistive circuit is: a. 0% b. 90% c. 90 degrees d. 100% e none of the above 15. The power factor of a circuit containing only capacitors is: a. 0% b. 90% c. 90 degrees d. 100% e. none of the above 16. If a circuit contains both a coil and a capacitor they will tend to cancel each other out. a. True b. False 17. A wattmeter connected to a circuit containing only capacitors will read zero a. True b. False 18. Increasing the frequency of the power supply to a circuit containing only a motor (an RL circuit) will cause the inductive reactance of that circuit to increase a. True b. False 19. Increasing the frequency to a circuit containing only capacitors will cause the capacitive reactance to increase a. True b. False 20. You would need the readings from a voltmeter, ammeter, and wattmeter (all three) to calculate the power factor of an RL circuit. a. True b. False

          14. The power factor of a purely resistive circuit is:
a. 0%
b. 90%
c. 90 degrees
d. 100%
e none of the above
15. The power factor of a circuit containing only capacitors is:
a. 0%
b. 90%
c. 90 degrees
d. 100%
e. none of the above
16. If a circuit contains both a coil and a capacitor they will tend to cancel each
other out.
a. True
b. False
17. A wattmeter connected to a circuit containing only capacitors will read zero
a. True
b. False
18. Increasing the frequency of the power supply to a circuit containing only a
motor (an RL circuit) will cause the inductive reactance of that circuit to
increase
a. True
b. False
19. Increasing the frequency to a circuit containing only capacitors will cause the
capacitive reactance to increase
a. True
b. False
20. You would need the readings from a voltmeter, ammeter, and wattmeter (all
three) to calculate the power factor of an RL circuit.
a. True
b. False

14. The power factor of a purely resistive circuit is:
a. 0%
b. 90%
c. 90 degrees
d. 100%
e none of the above
15. The power factor of a circuit containing only capacitors is:
a. 0%
b. 90%
c. 90 degrees
d. 100%
e. none of the above
16. If a circuit contains both a coil and a capacitor they will tend to cancel each
other out.
a. True
b. False
17. A wattmeter connected to a circuit containing only capacitors will read zero
a. True
b. False
18. Increasing the frequency of the power supply to a circuit containing only a
motor (an RL circuit) will cause the inductive reactance of that circuit to
increase
a. True
b. False
19. Increasing the frequency to a circuit containing only capacitors will cause the
capacitive reactance to increase
a. True
b. False
20. You would need the readings from a voltmeter, ammeter, and wattmeter (all
three) to calculate the power factor of an RL circuit.
a. True
b. False

Added by Kyle S.

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