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Electric Circuits

Electric Circuits
Capacitors for P.f correction are rated in

 KW.
 KVAR.
 KVA.
 KV.

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Electric Circuits
A capacitor of 50 microfarad is connected in series with a resistance of 120 Ω. If above circuit is connected across 240 V, 50 Hz 1 - φ supply. Find the capacitive reactance?

 0.015 Ω.
 63.7 Ω.
 1.765 Ω.
 135.86 Ω.

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Electric Circuits
A piece of copper and another piece of germanium are cooled from room temperature to 80K. The resistance of

 copper increases and germanium decreases.
 copper decreases and germanium increases.
 each of them decreases.
 each of them increases.

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Electric Circuits
From the given figure find the R3

 25 mega ohm
 25 kilo ohm
 25 ohm
 25 mili ohm

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Electric Circuits
A branch of a network is said to be passive when it contains

 voltmeter.
 battery.
 current source.
 voltage source.

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

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

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