Basic Electrical Engineering (3110005) MCQs

MCQs of AC Circuits

Showing 1 to 10 out of 117 Questions
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1.

The variation of a quantity such as voltage or current shown on a graph is known as

(a)

Waveform
(b)

Peak value
(c)

Instantaneous value
(d)

Period
Answer:

Option (a)

2.

What is the duration of one cycle known as

(a)

Waveform
(b)

Peak value
(c)

Instantaneous value
(d)

Period
Answer:

Option (d)

3.

The repetition of a variable quantity, recurring at equal intervals, is known as

(a)

Waveform
(b)

Instantaneous value
(c)

Cycle
(d)

Period
Answer:

Option (c)

4.

The value of a given waveform at any instant time os termed as

(a)

Waveform
(b)

Instantaneous value
(c)

Cycle
(d)

Period
Answer:

Option (b)

5.

The maximum instantaneous value measured from zero value is known as

(a)

Peak value
(b)

Peak to Peak value
(c)

Cycle
(d)

Period
Answer:

Option (a)

6.

RMS stands for

(a)

Root Mean Square
(b)

Root Mean Sum
(c)

Root Maximum Sum
(d)

Root Minimum Sum
Answer:

Option (a)

7.

In a sinusoidal wave, average current is always ________ rms current.

(a)

Greater than
(b)

Less than
(c)

Equal to
(d)

Not related
Answer:

Option (b)

8.

Peak value divided by the rms value gives us

(a)

Peak factor
(b)

Crest factor
(c)

Both peak and crest factor
(d)

Neither peak nor crest factor
Answer:

Option (c)

9.

The time axis of an ac phasor represents?

(a)

Time
(b)

Phase angle
(c)

Voltage
(d)

Current
Answer:

Option (b)

10.

The length of the phasor represents?

(a)

Magnitude of the quantity
(b)

Direction of the quantity
(c)

Neither magnitude nor direction
(d)

Either magnitude or direction
Answer:

Option (a)

Showing 1 to 10 out of 117 Questions
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