Alternating Current and Voltage MCQs
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 10hard
A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is
Question 11hard
Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is
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Question 13hard
A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of
Question 14hard
The instantaneous value is the voltage or current value of a waveform at its peak.
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Question 16hard
A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is
Question 18hard
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