ALTERNATING CURRENT AND VOLTAGE QUIZ

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

8 V

7.07 V

54.4 V

5.44 V

TRUE ANSWER : ?
YOUR ANSWER : ?

How many degrees are there in /3 rad?

180°

6°

27°

60°

TRUE ANSWER : ?
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When a sine wave has a frequency of 100 Hz in 12 s it goes through

1,200 cycles

1/100 cycle

12 cycles

120 cycles

TRUE ANSWER : ?
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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

30 V

0 V

35 V

6 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

1.65 V

10.60 V

16.54 V

5.93 V

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

11 V

4.6 V

4 V

1.6 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

6.5 V

26 V

None of these

13 V

TRUE ANSWER : ?
YOUR ANSWER : ?

A signal with a 400 s period has a frequency of

400 Hz

2,500 Hz

25,000 Hz

250 Hz

TRUE ANSWER : ?
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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

1.5 mA

10 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

A phasor represents

the width of a quantity

the phase angle

the magnitude of a quantity

the magnitude and a quantity direction

TRUE ANSWER : ?
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