# Electrical Engineering - RL Circuits

### Exercise :: RL Circuits - General Questions

16.

Which of the following power factors results in less energy loss in an RL circuit?

 A. 1 B. 0.8 C. 0.4 D. 0.2

Explanation:

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17.

A 3.3 k resistor and a 120 mH coil are in parallel. Both components are across a 2 kHz, 12 V ac source. The total current in the circuit is

 A. 8.74 mA B. 874 mA C. 874 A D. 8.74 A

Explanation:

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18.

When the frequency of the voltage applied to a series RL circuit is increased, the phase angle

 A. decreases B. increases C. does not change D. cannot be determined without values

Explanation:

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19.

If a load is purely inductive and the reactive power is 12 VAR, the apparent power is

 A. 0 VA B. 12 VA C. 6 VA D. 24 VA

Explanation:

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20.

If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit

 A. doubles B. halves C. remains constant D. cannot be determined without values