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Alternating Current and Voltage
A sawtooth wave has a period of 10 ms. Its frequency is
50 Hz
10 Hz
1,000 Hz
100 Hz
50 Hz
10 Hz
1,000 Hz
100 Hz
Answer
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Related Question
Alternating Current and Voltage
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 lags wave B by 105°.
Wave A leads wave B by 105°.
Wave A leads wave B by 15°.
Wave A lags wave B by 15°.
Wave A lags wave B by 105°.
Wave A leads wave B by 105°.
Wave A leads wave B by 15°.
Answer
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Alternating Current and Voltage
A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle
is 100%
is 1%
is 30%
cannot be determined
is 100%
is 1%
is 30%
cannot be determined
Answer
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Alternating Current and Voltage
A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of
12 kHz
18 kHz
1.3 MHz
25 kHz
12 kHz
18 kHz
1.3 MHz
25 kHz
Answer
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Alternating Current and Voltage
If a sine wave goes through 10 cycles in 20 s, the period is
100 s
20 s
4 s
2 s
100 s
20 s
4 s
2 s
Answer
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Alternating Current and Voltage
The average half-cycle value of a sine wave with a 40 V peak is
6.37 V
25.48 V
14.14 V
50.96 V
6.37 V
25.48 V
14.14 V
50.96 V
Answer
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