Basic Electrical Engineering (3110005) MCQs

MCQs of AC Circuits

Showing 71 to 80 out of 117 Questions
5 6 7 8 9 10
71.
In an RLC circuit, which of the following is always used as a vector reference?
(a) Voltage
(b) Resistance
(c) Impedance
(d) Current
Answer:

Option (a)

72.
Which of the following is not ac waveform?
(a) sinusoidal
(b) square
(c) constant
(d) triangular
Answer:

Option (c)

73.
What is the unit of admittance?
(a) ohm
(b) henry
(c) farad
(d) ohm-1
Answer:

Option (d)

74.
What is the correct formula for quality factor?
(a) Q = BW*fr
(b) Q = BW/fr
(c) Q = fr/BW
(d) Q = fr2
Answer:

Option (c)

75.
The energy stored in the capacitor is of _________ nature.
(a) Electrostatic
(b) Magnetic
(c) Neither electrostatic nor magnetic
(d) Either electrostatic or magnetic
Answer:

Option (a)

76.
The energy stored in the inductor is of _________ nature.
(a) Electrostatic
(b) Magnetic
(c) Neither electrostatic nor magnetic
(d) Either electrostatic or magnetic
Answer:

Option (b)

77.
What is the strength of magnetic field known as ________
(a) Fluxd
(b) Density
(c) Magnetic strength
(d) Magnetic flux density
Answer:

Option (d)

78.
An E.M.F. can be induced by _________
(a) Change in the magnetic field only
(b) Change in the area of cross section only
(c) Change in angle between magnetic field and area only
(d) Change in the magnetic field, area or angle between them
Answer:

Option (d)

79.
What does emf stand for?
(a) Electronic magnetic force
(b) Electromotive force
(c) Electromagnetic force
(d) Electromated force
Answer:

Option (b)

80.
According to Faraday’s laws of electromagnetic induction, an emf is induced in a conductor whenever?
(a) The conductor is perpendicular to the magnetic field
(b) Lies in the magnetic field
(c) Cuts magnetic lines of flux
(d) Moves parallel to the magnetic field
Answer:

Option (c)

Showing 71 to 80 out of 117 Questions
5 6 7 8 9 10