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Alternating Current and Voltage
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°
45°
None of these
40°
0°
45°
None of these
40°
Answer
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Alternating Current and Voltage
To produce an 800 Hz sine wave, a four-pole generator must be operated at
200 rps
1,600 rps
800 rps
400 rps
200 rps
1,600 rps
800 rps
400 rps
Answer
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Alternating Current and Voltage
How many degrees are there in /3 rad?
60°
27°
6°
180°
60°
27°
6°
180°
Answer
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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
40 Hz
400 Hz
100 Hz
indeterminable
40 Hz
400 Hz
100 Hz
indeterminable
Answer
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Alternating Current and Voltage
If the rms voltage drop across a 15 k resistor is 16 V, the peak current through the resistor is
10 mA
1 mA
1.5 mA
15 mA
10 mA
1 mA
1.5 mA
15 mA
Answer
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