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Electric Circuits

Electric Circuits
Which of the following substance when added to electrolyte promotes smooth deposition?

 Any of above.
 Glucose.
 Gelatine.
 Albumen.

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Electric Circuits
To reduce hysteresis loss, we use

 soft-iron.
 CRGO steel.
 copper bars.
 laminated sheets.

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Electric Circuits
A coil of negligible resistance has an induction of 100 mH. The current passing through the coil changes from 2 A to 4 A at a uniform rate in 0.1 sec the voltage across the coil during this time would be __________ V.

 36
 2
 8
 50

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Electric Circuits
Magnetic flux has the unit of

 Ampere turn
 Weber
 Newton
  Tesla

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Electric Circuits
Instantaneous power in inductor is proportional to the

 square of the rate of change of current.
 temperature of the inductor.
 product of the instantaneous current and rate of change of current.
 square of instantaneous current.

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Electric Circuits
The switch S is the circuit shown in figure is ideal. If the switch is repeatedly closed for 1 ms and opened for 1 ms, the average value of i(t) is

 0.35 mA.
  0.25 mA.
 1 mA.
 0.5 mA.

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MORE MCQ ON Electric Circuits

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