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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
Four resistances 80 Ohm, 50 Ohm, 25 Ohm and R are connected in parallel. Current through 25 Ohm resistance is 4A. Total current of supply is 10A. The value of R will be

 36.36.
 76.66.
 66.66.
 40.25.

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Electric Circuits
Internal resistance of ideal voltage source is

 100 ohms
 infinite
 finite
 zero

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Electric Circuits
Say A point has an absolute potential of 40 V and point B has an absolute potential of - 10 V, then what will be the value of VBA ?

  30 V.
 50 V.
  - 50 V.
  none of above.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The phase angle of current in respect of supply voltage will be

 20.2o.
 40.4o.
 32.1o.
 28.8o.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The current in R is

 5.08 A.
 10.16 A.
 1.27 A.
 2.54 A.

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MORE MCQ ON Electric Circuits

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