Alternating Current and Voltage - General Questions (2)

Directions to Solve

Alternating Current and Voltage - General Questions

mcq8_1001_1

Calculate the duty cycle of the repetitive pulse waveform in the given circuit.

A.	8.33%
B.	0%
C.	33.33%
D.	25%

Answer: Option D

Explanation:

No answer description available for this question

10.

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.

11.

mcq8_1003_1 (1)

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

12.

What is the instantaneous peak voltage at 250° on a 6 V peak sine wave?

A.	+5.64 V
B.	â€“5.64 V
C.	+26.13 V
D.	â€“26.13 V

Answer: Option B

Explanation:

No answer description available for this question

13.

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

14.

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.

15.

mcq8_1006_1

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

Answer: Option D

Explanation:

No answer description available for this question

16.

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

Answer: Option C

Explanation:

No answer description available for this question

Alternating Current and Voltage - General Questions (2)

Alternating Current and Voltage - General Questions

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