ALTERNATING CURRENT AND VOLTAGE QUIZ

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

12 cycles

120 cycles

1/100 cycle

1,200 cycles

TRUE ANSWER : ?
YOUR ANSWER : ?

A signal with a 400 s period has a frequency of

2,500 Hz

25,000 Hz

400 Hz

250 Hz

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

1.3 MHz

25 kHz

12 kHz

TRUE ANSWER : ?
YOUR ANSWER : ?

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

8 V

5.44 V

54.4 V

7.07 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

14.14 V

50.96 V

25.48 V

6.37 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

10.60 V

1.65 V

16.54 V

5.93 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

10 Hz

50 Hz

1,000 Hz

100 Hz

TRUE ANSWER : ?
YOUR ANSWER : ?

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

7.64 V

1.27 V

6.37 V

0 V

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

0.0045 s

3,000 s

1.5 ms

2 ms

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%

50%

1%

25%

TRUE ANSWER : ?
YOUR ANSWER : ?

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