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Electric Circuits

Electric Circuits
Ceq of two capacitors connected in series is given by

 C1 = C2.
 C1C2.
 C1 C2 / (C1 + C2).
 C1 + C2.

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Electric Circuits
In RLC series circuit R = 2Ω, L = 2mH and C = 1μF. Find the time constant of the circuit?

 1 μsec
 2 msec
 2 μsec
 4 msec

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Electric Circuits
The internal resistance of a practical voltage source is considered to be connected in

 series.
 either parallel or series.
 parallel.
None of these

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Electric Circuits
A constant voltage source has

 high internal resistance.
 low internal resistance.
 minimum efficiency.
 minimum current capacity.

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Electric Circuits
The frequency of EMF generated by a generator depends upon its

 nature of supply.
 number of poles.
 both speed and number of poles.
 speed.

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Electric Circuits
One ampere hour charge is equivalent to

 360 coulombs.
 36 coulombs.
 3600 coulombs.
 36000 coulombs.

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