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Electronics - Alternating Current and Voltage

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Exercise

"Forgiveness is a virtue of the brave."
- Indira Gandhi
1.

What type of waveform is shown in the given circuit?

 A. Sine wave B. Square wave C. Triangle wave D. Sawtooth wave

2.

In both induction and synchronous ac motors

 A. the operating speed is very steady B. the stator magnetic field is stationary C. the stator magnetic field rotates D. the "squirrel cage" forms the rotor

3.

What is the peak-to-peak voltage of the waveform in the given circuit?

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

4.

Most practical alternators generate electricity from

 A. a coil rotating within a magnetic field B. a magnetic field rotating around fixed windings C. a permanent magnet rotating within a varying electromagnetic field D. none of the above

5.

A half-cycle average voltage of 12 V is equal to what rms voltage?

 A. 13.33 V B. 8.48 V C. 18.84 V D. 7.64 V