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Electric Circuits

Electric Circuits
Three resistors each R Ohm is connected to form a triangle. The equivalent resistance across any terminals is

 R.
 3R/2.
 R/2.
 2R/3.

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Electric Circuits
The electrical resistance of human body is around

  5 ohms.
  1000 ohms.
  25 ohms.
  250 ohms.

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Electric Circuits
Capacitors for P.f correction are rated in

 KW.
 KV.
 KVA.
 KVAR.

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

 0.5.
 0.866.
 0.577.
 1.

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Electric Circuits
An AC voltage of 200 V at 50 Hz is applied to a coil which draws 5 A and dissipates 1000 W. The resistance and impedance of the coil respectively are

 40 Ω and 200 Ω.
 25 Ω and 5 Ω.
 50 Ω and 200 Ω.
 40 Ω and 40 Ω.

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Electric Circuits
The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be

 2R Ω
 8R Ω
 4R Ω
 R Ω

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MORE MCQ ON Electric Circuits

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