Alternating Current and Voltage

Question: 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

Answer: Option B

Explanation:

No answer description available for this question.

Question: A rectangular wave that has a duty cycle of 50% could be called a
[A].

“c” wave

[B].

sawtooth wave

[C].

square wave

[D].

triangular wave

Answer: Option C

Explanation:

No answer description available for this question.

Question: 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

Answer: Option A

Explanation:

No answer description available for this question.

Question: Calculate the positive-going slope of the waveform in the given circuit.
[A].

5 V/ms

[B].

2.5 V/ms

[C].

2.5 V/s

[D].

5 V/s

Answer: Option B

Explanation:

No answer description available for this question.