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Electric Circuits

Electric Circuits
Current efficiency in electroplating is usually

  99 %.
  90 to 98 %.
  50 to 60 %.
  70 to 80 %.

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Electric Circuits
For finding the Z11 parameter at the input port of a two port network

 output port is open circuited.
 input port is open circuited.
 input port is short circuited.
 output port is short circuited.

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Electric Circuits
In a capacitor, the electrical energy is stored in

 none of above.
 magnetic field.
 electric field.
 both ‘electric field’ and magnetic field’.

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Electric Circuits
In delta connected circuit when one resistor is open, then power will be

 0.
 reduced by the factor of 3.
 increased by factor of 3.
  remain unchanged.

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Electric Circuits
A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is

 0.4.
 0.85.
 1.
 10.

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Electric Circuits
The capacitance of a conductor is varying from 2 microfarad to zero in 1 sec linearly if the voltage applied to it is 6 V the energy stored in 0.5 sec in the condenser is

 10 µ joules.
  55.1 µ joules.
 18 µ joules.
 20 µ joules.

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MORE MCQ ON Electric Circuits

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