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Electric Circuits

Electric Circuits
A paper capacitor is usually available in form of

 meshed plates.
 tubes.
 disc.
 rolled foil.

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Electric Circuits
An electrical motor has rating of 10 MVA at 0.8 lag, represented as series RL circuit at a 50 MVA base. Find the impedance value?

 (4 + j3) pu
 (3 + j4) pu
 (2 + j4) pu
 (4 + j2 ) pu

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Electric Circuits
If P is the power of a star connected system then what will be power of an equivalent delta connected system?

 P/3
 P
None of these
 3P

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Electric Circuits
A wire of resistance R has it length and cross - section both doubled. Its resistance will become

 R.
 0.5R.
 4R.
 2R.

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Electric Circuits
Sulphation in a lead acid battery occurs due to

 trickle charging.
 heavy charging.
 incomplete charging.
 fast charging.

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Electric Circuits
A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the current in the circuit?

 0.1465 A.
 0.4583 A.
 0.2547 A.
 0.1578 A.

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MORE MCQ ON Electric Circuits

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