ALTERNATING CURRENT AND VOLTAGE QUIZ

A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is

50%

25%

100%

1%

TRUE ANSWER : ?
YOUR ANSWER : ?

If a sine wave goes through 10 cycles in 20 s, the period is

2 s

20 s

4 s

100 s

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

54.4 V

5.44 V

7.07 V

8 V

TRUE ANSWER : ?
YOUR ANSWER : ?

The conductive loop on the rotor of a simple two-pole, single-phase generator rotates at a rate of 400 rps. The frequency of the induced output voltage is

indeterminable

400 Hz

100 Hz

40 Hz

TRUE ANSWER : ?
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A sawtooth wave has a period of 10 ms. Its frequency is

1,000 Hz

10 Hz

50 Hz

100 Hz

TRUE ANSWER : ?
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A square wave has a period of 60 s. The first odd harmonic is

33.33 kHz

500 kHz

50 kHz

5 kHz

TRUE ANSWER : ?
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How many degrees are there in /3 rad?

6°

27°

60°

180°

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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

6 V

0 V

30 V

35 V

TRUE ANSWER : ?
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A phasor represents

the magnitude and a quantity direction

the width of a quantity

the magnitude of a quantity

the phase angle

TRUE ANSWER : ?
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A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is

22.6 mA

16 mA

39.6 mA

45.12 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

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