# Electrical Engineering - Alternating Current and Voltage

### Exercise :: Alternating Current and Voltage - General Questions

21.

A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of

 A. 0.0045 s B. 2 ms C. 1.5 ms D. 3,000 s

Explanation:

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22.

A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is

 A. 4 V B. 4.6 V C. 1.6 V D. 11 V

Explanation:

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23.

A sine wave with an rms value of 12 V is riding on a dc level of 18 V. The maximum value of the resulting waveform is

 A. 6 V B. 30 V C. 35 V D. 0 V

Explanation:

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24.

If the rms current through a 6.8 k resistor is 8 mA, the rms voltage drop across the resistor is

 A. 5.44 V B. 54.4 V C. 7.07 V D. 8 V

Explanation:

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25.

The average half-cycle value of a sine wave with a 40 V peak is

 A. 25.48 V B. 6.37 V C. 14.14 V D. 50.96 V