Basic Electrical Engineering (3110005) MCQs

MCQs of AC Circuits

Showing 61 to 70 out of 117 Questions
4 5 6 7 8 9
61.
Inductance is _____________________ to number of turns in the coil.
(a) Directly proportional
(b) Inversely proportional
(c) Equal
(d) Not related
Answer:

Option (a)

62.
Choke involve use of _____________
(a) Resistor
(b) Capacitor
(c) Inductor
(d) Transistor
Answer:

Option (c)

63.
In an inductive circuit, the current________ the voltage?
(a) Leads
(b) Lags
(c) Is greater than
(d) Is less than
Answer:

Option (b)

64.
In which device inductor cannot be used?
(a) Filter circuit
(b) Transformer
(c) Choke
(d) Dielectric
Answer:

Option (d)

65.
For an RL circuit, the phase angle is always ________
(a) Positive
(b) Negative
(c) 0
(d) 90
Answer:

Option (b)

66.
What is sinϕ from impedance triangle?
(a) XL/R
(b) XL/Z
(c) R/Z
(d) Z/R
Answer:

Option (b)

67.
What is the resonance condition?
(a) When XL>XC
(b) When XL
(c) When XL=XC
(d) When XC=infinity
Answer:

Option (c)

68.
What is the frequency in resonance condition?
(a) Minimum
(b) Maximum
(c) Cannot be determined
(d) Zero
Answer:

Option (b)

69.
What is the resonance frequency of ac circuit?
(a) 1/√LC
(b) √(L/C)
(c) √LC
(d) LC
Answer:

Option (a)

70.
What is the relation between reactance, resistance and impedance?
(a) Z = R+jX
(b) Z = R+X
(c) Z = R-X
(d) Z = R-jX
Answer:

Option (a)

Showing 61 to 70 out of 117 Questions
4 5 6 7 8 9