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MCQs 1: Which of the following circuit component opposes the change in the circuit voltage ?

Inductance Capacitance Conductance Resistance
Answer Explanation

MCQs 2: Pure inductive circuit takes power from the A.C. line when_________?

applied voltage decreases but current increases applied voltage increases but current decreases both applied voltage and current increase both applied voltage and current decrease
Answer Explanation

MCQs 3: The time constant of a series R-C circuit is given by____________?

R/C RC2 RC R2C
Answer Explanation

MCQs 4: In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of__________?

R only L only C only LorC R,LorC
Answer Explanation

MCQs 5: Magnitude of current at resonance in R-L-C circuit________?

depends upon the magnitude of R depends upon the magnitude of L depends upon the magnitude of C depends upon the magnitude of R, Land C
Answer Explanation

MCQs 6: Time constant of an inductive circuit_________?

increases with increase of inductance and decrease of resistance increases with the increase of inductance and the increase of resistance increases with the decrease of inductance and decrease of resistance increases with decrease of inductance and increase of resistance
Answer Explanation

MCQs 7: In a purely inductive circuit__________?

actual power is zero reactive power is zero apparent power is zero none of above is zero
Answer Explanation

MCQs 8: Inductance of coil___________?

is unaffected by the supply frequency decreases with the increase in supply frequency increases with the increase in supply frequency becomes zero with the increase in supply frequency
Answer Explanation

MCQs 9: Time constant of a capacitive circuit__________?

increases with the decrease of capacitance and decrease of resistance increases with the decrease of capacitance and increase of resistance increases with the increase of capacitance and decrease of resistance increase with increase of capacitance and increase of resistance
Answer Explanation

MCQs 10: In any A.C. circuit always__________?

apparent power is more than actual power reactive power is more than apparent power actual power is more than reactive power reactive power is more than actual power
Answer Explanation

MCQs 11: In a series L-C circuit at the resonant frequency the__________?

current is maximum current is minimum impedance is maximum voltage across C is minimum
Answer Explanation

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