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Alternating Current and Voltage MCQs

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1. Increasing the number of turns in a conductor loop in a basic generator will ___.
A. increase the generator's output voltage amplitude
B. increase the generator's output frequency
C. decrease the generator's output voltage amplitude
D. decrease the generator's output frequency
Discussion
2. Increasing the number of magnetic poles in a basic generator will ___.
A. increase the generator's output voltage amplitude
B. increase the generator's output frequency
C. decrease the generator's output voltage amplitude
D. decrease the generator's output frequency
Discussion
3. The magnitude of an alternation that varies from zero is called its _______.
A. altitude
B. polarity
C. attitude
D. amplitude
Discussion
4. If a sine wave's frequency equals 25 MHz, its period equals _____.
A. 25 µs
B. 25 ms
C. 4 µs
D. 40 ns
Discussion
5. If a sine wave's period equals 50 ms, its frequency equals _____.
A. 20 Hz
B. 0.02 Hz
C. 50 Hz
D. 50 kHz
Discussion
6. A peak current of 12.5 mA is equivalent to ___.
A. an rms value of 25 mA
B. an average value of 12.5 mA
C. a peak-to-peak value of 6.25 mA
D. an average value of 7.96 mA
Discussion
7. Increasing the number of turns in a conductor loop in a basic generator will ___.
A. increase the generator's output voltage amplitude
B. increase the generator's output frequency
C. decrease the generator's output voltage amplitude
D. decrease the generator's output frequency
Discussion

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