A.C. Fundamentals and Circuits Mcqs

This set of Electrical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “A.C. Fundamentals and Circuits ”. These questions are chosen from a collection of most authoritative and best reference books on Electrical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate A.C. Fundamentals and Circuits comprehensively.

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106.
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

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107.
In a purely inductive circuit__________?

Actual power is zero

Reactive power is zero

Apparent power is zero

None of above is zero

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108.
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

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109.
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

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110.
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

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111.
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

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