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Electric Circuits

Electric Circuits
Current efficiency in electroplating is usually

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

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Electric Circuits
What are the points to be mentioned in specifying main switches?

  Current rating.
  Voltage grade.
  None of these.
  Both A and B.

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Electric Circuits
Total power consumed in the circuit below is 10 W. Find X.

 1 A.
 None of these.
 3 A.
  2 A.

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Electric Circuits
The voltage across R and L in a series RL circuit are found to be 200 V and 150 V respectively the rms value of the voltage across the series combination is ______ V.

 250
 200
 360
 450

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Electric Circuits
The resistance of 100 W, 200 V lamp is

 800 Ω.
 1600 Ω.
 400 Ω.
 200 Ω.

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Electric Circuits
Three element having conductance G1, G2 and G3 are connected in parallel. Their combined conductance will be

 G1 + G2 + G3.
 1 / G1 + 1 / G2 + 1 / G3.
 (G1 + G2 + G3) - 1.
 (1 / G1 + 1 / G2 + 1 / G3) - 1.

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