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Electric Circuits

Electric Circuits
The active and reactive power in an AC circuit are 10W and 20VAR respectively. What is the power factor?

 0.577.
 0.5.
 0.866.
 1.

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Electric Circuits
What is the relation between time period T and frequency?

 T = frequency.
 T = 1 / frequency.
 T = 0.5 / frequency.
 T = 0.85 / frequency.

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Electric Circuits
For steady state current inductor acts as

 Short circuit
 Voltage source
 Open circuit
 Current source

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Electric Circuits
A 2m long conductor, carries a current of 50 A at a magnetic field of 100 × 10 − 3 T. The force on the conductor is

 100 N.
 10 N.
 1000 N.
 10000 N.

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Electric Circuits
The resistance of 200 W, 200 V lamp is

 400 Ω.
 100 Ω.
 800 Ω.
  200 Ω.

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Electric Circuits
Consider the following circuit. What is the value of i ?

 - 5 A.
 12 A.
  5 A.
 6 A.

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MORE MCQ ON Electric Circuits

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