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Electric Circuits

Electric Circuits
The phase angle difference between current and voltage is 90o, the power will be

 minimum.
 zero.
 VI.
 maximum.

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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
 50
 8
 2

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Electric Circuits
2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

 105.
 75.
 15.
 60.

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Electric Circuits
If 1 A current flows in a circuit, the number of electrons flowing through this circuit is

 1.6 × 10 - 19
 0.625 × 1019
 1.6 × 1019
 0.625 × 10 - 19

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Electric Circuits
Final value theorem is not applicable for which of the following?

 Both 2 and 3
 marginally stable systems
 unstable systems
 stable systems

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Electric Circuits
For cadium plating electrolyte used is

 cadmium hexa metaphosphate.
 any of above.
 cadmium sulphate and sulphuric acid.
 sodium cyanide, cadmium and caustic soda.

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MORE MCQ ON Electric Circuits

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