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Alternating Current and Voltage MCQs

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Practice free Alternating Current and Voltage multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 45 questions — no login required.

Question 1hard

To produce an 800 Hz sine wave, a four-pole generator must be operated at

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Question 2hard

Sine wave A has a positive-going zero crossing at 45°. Sine wave B has a positive-going zero crossing at 60°. Which of the following statements is true?

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Question 3hard

A ramp is the type of waveform characterized by a non-linear increase or decrease in voltage or current.

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Question 4hard

Amplitude is the maximum value of a voltage or current.

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Question 5hard

The average half-cycle value of a sine wave with a 40 V peak is

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Question 6hard

A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of