ALTERNATING CURRENT AND VOLTAGE QUIZ

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

2 ms

1.5 ms

3,000 s

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

30 V

35 V

0 V

6 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

26 V

6.5 V

None of these

13 V

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

2.66 V

26.6 V

4 V

18.8 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

100 Hz

indeterminable

400 Hz

40 Hz

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

4.6 V

4 V

11 V

1.6 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

15 mA

1 mA

10 mA

1.5 mA

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 : ?
YOUR ANSWER : ?

A phasor represents

the width of a quantity

the magnitude and a quantity direction

the magnitude of a quantity

the phase angle

TRUE ANSWER : ?
YOUR ANSWER : ?

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

6.37 V

50.96 V

14.14 V

25.48 V

TRUE ANSWER : ?
YOUR ANSWER : ?

↑