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Electric Circuits

Electric Circuits
Which quantity consists of a unit 1KWh ?

 Time
 Energy
 Charge
 Power

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Electric Circuits
In series RLC circuit to get Q>1, which of the following is required?

 XL > R
 XL = R
 XL < R
All of these

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Electric Circuits
Which of following capacitors preferred for high frequency circuits?

 Mica capacitor.
 Electrolytic capacitor.
 Air capacitor.
 Glass capacitor.

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Electric Circuits
The capacitive reactance of an electric circuit is 50 Ohms. The frequency of supply becomes doubled. What is the new capacitive reactance?

 200 Ohms.
 50 Ohms.
 100 Ohms.
 25 Ohms.

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Electric Circuits
Transients are presents in the circuit when the circuit is having

 C.
 L.
 R.
 Either L or C.

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Electric Circuits
A conductor of length l meters moves at right angles to a uniform magnetic field of flux density B = 1.5 T. if the velocity of revolution of the conductor is 50 ms-1 then induced e.m.f. in the conductor is

 75 V.
 0 V.
 100 V.
 125 V.

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