ALTERNATING CURRENT AND VOLTAGE QUIZ

A square wave has a period of 60 s. The first odd harmonic is

5 kHz

500 kHz

50 kHz

33.33 kHz

TRUE ANSWER : ?
YOUR ANSWER : ?

A phasor represents

the phase angle

the magnitude of a quantity

the magnitude and a quantity direction

the width of a quantity

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If the rms voltage drop across a 15 k resistor is 16 V, the peak current through the resistor is

15 mA

1 mA

10 mA

1.5 mA

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

0 V

30 V

35 V

6 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

16 mA

39.6 mA

22.6 mA

45.12 mA

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

3,000 s

1.5 ms

0.0045 s

2 ms

TRUE ANSWER : ?
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A signal with a 400 s period has a frequency of

250 Hz

400 Hz

2,500 Hz

25,000 Hz

TRUE ANSWER : ?
YOUR ANSWER : ?

A sawtooth wave has a period of 10 ms. Its frequency is

1,000 Hz

50 Hz

100 Hz

10 Hz

TRUE ANSWER : ?
YOUR ANSWER : ?

A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle

cannot be determined

is 1%

is 30%

is 100%

TRUE ANSWER : ?
YOUR ANSWER : ?

Sine wave A has a positive-going zero crossing at 45°. Sine wave B has a positive-going zero crossing at 60°. Which of the following statements is true?

Wave A leads wave B by 105°.

Wave A lags wave B by 105°.

Wave A lags wave B by 15°.

Wave A leads wave B by 15°.

TRUE ANSWER : ?
YOUR ANSWER : ?

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