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 28hard
The angular position of a phasor represents the angle of the sine wave with respect to a reference.
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Question 31hard
If the rms current through a 6.8 kΩ resistor is 8 mA, the rms voltage drop across the resistor is
Question 32hard
If the rms current through a 4.7 kΩ resistor is 4 mA, the peak voltage drop across the resistor is
Question 33hard
A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is
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Question 35hard
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
Question 36hard
Duty cycle is the characteristic of a pulse waveform that indicates the high time versus the low time.