ALTERNATING CURRENT AND VOLTAGE QUIZ

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

is 100%

cannot be determined

is 1%

is 30%

TRUE ANSWER : ?
YOUR ANSWER : ?

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

50 Hz

100 Hz

1,000 Hz

10 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

12 kHz

25 kHz

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

2.66 V

18.8 V

TRUE ANSWER : ?
YOUR ANSWER : ?

A signal with a 400 s period has a frequency of

2,500 Hz

25,000 Hz

250 Hz

400 Hz

TRUE ANSWER : ?
YOUR ANSWER : ?

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

5 kHz

50 kHz

500 kHz

33.33 kHz

TRUE ANSWER : ?
YOUR ANSWER : ?

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

26 V

13 V

None of these

6.5 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

5.93 V

1.65 V

16.54 V

10.60 V

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 : ?

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

1 mA

1.5 mA

10 mA

15 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

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