ALTERNATING CURRENT AND VOLTAGE QUIZ

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

None of these

6.5 V

13 V

26 V

TRUE ANSWER : ?
YOUR ANSWER : ?

A phasor represents

the phase angle

the magnitude and a quantity direction

the width of a quantity

the magnitude of a quantity

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1.5 mA

10 mA

1 mA

15 mA

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

54.4 V

7.07 V

5.44 V

8 V

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 lags wave B by 15°.

Wave A leads wave B by 105°.

Wave A leads wave B by 15°.

Wave A lags wave B by 105°.

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

1.6 V

4.6 V

11 V

TRUE ANSWER : ?
YOUR ANSWER : ?

One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is

45°

40°

0°

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

If the rms current through a 4.7 k resistor is 4 mA, the peak voltage drop across the resistor is

4 V

26.6 V

18.8 V

2.66 V

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

35 V

30 V

6 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

39.6 mA

22.6 mA

45.12 mA

16 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

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