ALTERNATING CURRENT AND VOLTAGE QUIZ

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

13 V

6.5 V

None of these

26 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

20 s

100 s

4 s

2 s

TRUE ANSWER : ?
YOUR ANSWER : ?

To produce an 800 Hz sine wave, a four-pole generator must be operated at

400 rps

200 rps

1,600 rps

800 rps

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1 mA

1.5 mA

15 mA

10 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

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

18 kHz

12 kHz

1.3 MHz

25 kHz

TRUE ANSWER : ?
YOUR ANSWER : ?

A phasor represents

the phase angle

the width of a quantity

the magnitude and a quantity direction

the magnitude of a quantity

TRUE ANSWER : ?
YOUR ANSWER : ?

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

100%

25%

50%

1%

TRUE ANSWER : ?
YOUR ANSWER : ?

When a sine wave has a frequency of 100 Hz in 12 s it goes through

12 cycles

1,200 cycles

1/100 cycle

120 cycles

TRUE ANSWER : ?
YOUR ANSWER : ?

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 : ?

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 15°.

Wave A leads wave B by 105°.

Wave A lags wave B by 15°.

Wave A lags wave B by 105°.

TRUE ANSWER : ?
YOUR ANSWER : ?

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