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Electric Circuits

Electric Circuits
In a series resonance circuit if bandwidth is 1 MHz and inductance is 1 mH, then what is the resistance value?

 1 Ω
 100 Ω
 1 KΩ
 1 MΩ

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Electric Circuits
A capacitor passes a current of 12.6 mA when supplied with 20 V ac with a frequency of 1000 Hz. The capacitance will be

 0.001 μF.
 0.01 μF.
 1 μF.
 0.1 μF.

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Electric Circuits
Phase voltages of a star connected alternator are ER = 240∠0o V, EY = 240∠-120o V and EB = 240∠ + 120o V. What is the phase sequence of the system?

 RBY.
 BYR.
 YBR.
 RYB.

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

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

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Electric Circuits
The strength of current in 1 H inductor changes at rate of 1 A / sec. Find the voltage across it?

 None of these.
 2 V.
 1 V.
 0.5 V.

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Electric Circuits
If emf in a given circuit is given by e = 100 sinω0t, then maximum value of voltage and frequency will be

 100 V, 50 Hz.
 100√2 V, 100 Hz.
 100 V, 100 Hz.
 50√2 V, 100 Hz.

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