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Electric Circuits

Electric Circuits
A motor having a power factor of 0.8 absorbs in active power of 1200 W the reactive power drawn from the supply is _________ VA.

 250
 900
 400
 130

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Electric Circuits
In RLC series circuit R = 2Ω, L = 2mH and C = 1μF and applied voltage is 10V DC. Then what is steady state current value?

 5A
 2A
 1A
 0A

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Electric Circuits
A cube of material of side 1 cm has a resistance of 0.002 Ω between its opposite faces. If the same volume of the material has a length of 4 cm and a uniform cross - section, the resistance of this length will be

  0.032 Ω.
 0.064 Ω.
  0.128 Ω.
 0.016 Ω.

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Electric Circuits
Which of the following is applicable for both linear and non-linear circuits?

 Norton’s theorem.
 Thevnin’s theorem.
 None of these .
 Superposition theorem.

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Electric Circuits
Find the current through 5 Ohm resistor from A to B.

 2A.
 1A.
 -1A.
 -2A.

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Electric Circuits
The internal resistance of a dry cell is of the order of

  1 to 15 Ohm.
  2 to 5 Ohm.
  1 to 1.5 Ohm.
  0.2 to 0.4 Ohm.

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