Basic Electrical Engineering (3110005) MCQs

MCQs of AC Circuits

Showing 41 to 50 out of 117 Questions
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41.
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)

42.
What is the duration of one cycle known as _________
(a) Waveform
(b) Peak value
(c) Instantaneous value
(d) Period
Answer:

Option (d)

43.
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)

44.
The value of a given waveform at any instant time is termed as ___________
(a) Waveform
(b) Instantaneous value
(c) Cycle
(d) Period
Answer:

Option (b)

45.
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)

46.
RMS stands for ________
(a) Root Mean Square
(b) Root Mean Sum
(c) Root Maximum sum
(d) Root Minimum Sum
Answer:

Option (a)

47.
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)

48.
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)

49.
What is the correct expression for the rms value of current?
(a) Irms = Im/2
(b) Irms = Im/√2
(c) Irms = Im/4
(d) Irms = Im
Answer:

Option (b)

50.
What is the value of the form factor for sinusoidal current?
(a) π/2
(b) π/4
(c) 2π
(d) π/√2
Answer:

Option (a)

Showing 41 to 50 out of 117 Questions
2 3 4 5 6 7