ALTERNATING CURRENT AND VOLTAGE QUIZ

A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of

18 kHz

12 kHz

25 kHz

1.3 MHz

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1.6 V

4.6 V

4 V

11 V

TRUE ANSWER : ?
YOUR ANSWER : ?

Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is

16.54 V

10.60 V

1.65 V

5.93 V

TRUE ANSWER : ?
YOUR ANSWER : ?

If the peak of a sine wave is 13 V, the peak-to-peak value is

None of these

26 V

13 V

6.5 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

6.37 V

50.96 V

25.48 V

14.14 V

TRUE ANSWER : ?
YOUR ANSWER : ?

One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is

40°

0°

None of these

45°

TRUE ANSWER : ?
YOUR ANSWER : ?

The average value of a 12 V peak sine wave over one complete cycle is

7.64 V

6.37 V

0 V

1.27 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

35 V

6 V

0 V

30 V

TRUE ANSWER : ?
YOUR ANSWER : ?

How many degrees are there in /3 rad?

27°

60°

6°

180°

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1.5 ms

2 ms

0.0045 s

3,000 s

TRUE ANSWER : ?
YOUR ANSWER : ?

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