ALTERNATING CURRENT AND VOLTAGE QUIZ

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

14.14 V

25.48 V

50.96 V

6.37 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

40 Hz

400 Hz

indeterminable

100 Hz

TRUE ANSWER : ?
YOUR ANSWER : ?

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

12 cycles

120 cycles

1,200 cycles

1/100 cycle

TRUE ANSWER : ?
YOUR ANSWER : ?

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

is 30%

is 100%

cannot be determined

is 1%

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

15 mA

1.5 mA

10 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

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

4 s

20 s

2 s

100 s

TRUE ANSWER : ?
YOUR ANSWER : ?

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

500 kHz

33.33 kHz

5 kHz

50 kHz

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

4 V

11 V

4.6 V

1.6 V

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%

1%

25%

50%

TRUE ANSWER : ?
YOUR ANSWER : ?

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

100 Hz

1,000 Hz

10 Hz

50 Hz

TRUE ANSWER : ?
YOUR ANSWER : ?

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