Electronics - Alternating Current and Voltage

Exercise :: Alternating Current and Voltage - General Questions

11. 

What is the dc voltage of the waveform in the given circuit?

A. 2 V
B. 4 V
C. 6 V
D. 8 V

Answer: Option C

Explanation:

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12. 

What is the fourth harmonic of a fundamental frequency of 400 Hz?

A. 100 Hz
B. 4 kHz
C. 4 Hz
D. 1.6 kHz

Answer: Option D

Explanation:

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13. 

What is the peak voltage across R3 in the given circuit?

A. 1.2 V
B. 5 V
C. 7 V
D. 12 V

Answer: Option B

Explanation:

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14. 

Which point is the trailing edge of the repetitive pulse waveform in the given circuit?

A. Point A
B. Point B
C. Point C
D. Point D

Answer: Option A

Explanation:

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15. 

A single-phase induction motor

A. is self-starting
B. operates at a fixed speed
C. is less reliable than a three-phase synchronous motor
D. none of the above

Answer: Option D

Explanation:

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