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Electric Circuits

Electric Circuits
Five capacitors each of 5 µF are connected in series, the equivalent capacitance of the system will be

 10 µF
 5 µF
 25 µF
 1 µF

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Electric Circuits
The indication of the state of charge of a battery is best given by

 colour of electrolyte.
 temperature of electrolyte.
 specific gravity of electrolyte.
 level of electrolyte.

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Electric Circuits
If a function is shifted by 'T', then it is correctly represented as

 f (t-T) u (t-T).
 f (t) u (t).
 f (t-T) u (t).
 f (t) u (t-T).

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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.

 8
 2
 50
 36

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Electric Circuits
A capacitor is charged by a constant 10 mA current sources which is turned on for 1 second. Assuming the capacitor is initially charge free; determine the charge delivered to and the power supplied by the source if the capacitor has a value of 1 mF.

 0.01C, 10MW.
 0.1C, 10MW.
 0.01C and 5W.
 0.1C, 100MW.

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Electric Circuits
VRN, VYN and VBN are three phase voltage of a balanced three phase system. If VRN = 200∠30o V and VBN = 200∠- 90o V, then phase sequence of the system is

 RBY.
 RYB.
 YRB.
 BRY.

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MORE MCQ ON Electric Circuits

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