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Electric Circuits

Electric Circuits
Which of the following materials has highest electrical conductivity ?

  Aluminium.
  Silver.
  Copper.
  Steel.

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Electric Circuits
In which of the following networks it is not possible to find the transient free response?

 RL
 RC
 RLC
 RL, RC, and RLC

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Electric Circuits
Aluminium is produced from bauxite by

  rotating.
  froth flotation.
  electrolytic process.
  oxidation.

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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
 130
 900
 400

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Electric Circuits
In 2 port network Z12 = Z21 indicates which property

 linear.
 non linear.
 bilateral.
 unilateral.

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Electric Circuits
The rms value of the resultant current in a wire which carries a DC current of 10A and a sinusoidal current of peak value 20A is

 22.4A.
 14.14A.
 17.3A .
 30A.

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