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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 30%
cannot be determined
is 1%
is 100%
is 30%
cannot be determined
is 1%
Answer
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Related Question
Alternating Current and Voltage
A phasor represents
the width of a quantity
the phase angle
the magnitude and a quantity direction
the magnitude of a quantity
the width of a quantity
the phase angle
the magnitude and a quantity direction
the magnitude of a quantity
Answer
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Alternating Current and Voltage
If the rms current through a 4.7 k resistor is 4 mA, the peak voltage drop across the resistor is
2.66 V
4 V
18.8 V
26.6 V
2.66 V
4 V
18.8 V
26.6 V
Answer
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Alternating Current and Voltage
A signal with a 400 s period has a frequency of
400 Hz
250 Hz
2,500 Hz
25,000 Hz
400 Hz
250 Hz
2,500 Hz
25,000 Hz
Answer
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Alternating Current and Voltage
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
0°
40°
None of these
45°
0°
40°
None of these
45°
Answer
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Alternating Current and Voltage
A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of
2 ms
3,000 s
1.5 ms
0.0045 s
2 ms
3,000 s
1.5 ms
0.0045 s
Answer
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