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Alternating Current and Voltage

Alternating Current and Voltage
If a sine wave goes through 10 cycles in 20 s, the period is

20 s
100 s
4 s
2 s

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Alternating Current and Voltage
How many degrees are there in /3 rad?

60°
6°
27°
180°

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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 30%
cannot be determined
is 100%
is 1%

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Alternating Current and Voltage
A phasor represents

the phase angle
the magnitude and a quantity direction
the width of a quantity
the magnitude of a quantity

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Alternating Current and Voltage
A square wave has a period of 60 s. The first odd harmonic is

50 kHz
33.33 kHz
5 kHz
500 kHz

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Alternating Current and Voltage
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

400 Hz
indeterminable
40 Hz
100 Hz

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