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Electric Circuits

Electric Circuits
For the resonance circuit ω0 = 105, Q = 50, R = 400 Ω the value of C is

 500 pF.
 250 pF.
 125 pF.
 1000 pF.

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Electric Circuits
A series RLC circuit is connected across a 240V, 50 Hz supply. When the voltage across capacitor is 250V, a maximum current of 0.5A flows in the circuit. Find the inductance.

 1.58 µF.
 0.47 µF.
 6.37 µF.
 2.25 µF.

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Electric Circuits
To obtain high efficiency, network is designed with which of the following?

 Unity Q factor
 Zero Q factor
 Low Q factor
 High Q factor

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Electric Circuits
Kirchhoffs laws are valid for

  non-linear circuits only.
  both linear and non-linear circuits.
  passive time invariant circuits.
  linear circuit only.

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Electric Circuits
The rms value of the resultant current in a wire which carries a DC current of 10A and a sinusoidal current of peak value 20A is

 30A.
 14.14A.
 22.4A.
 17.3A .

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Electric Circuits
If one cycle of AC waveform occurs every millisecond, the frequency will be

 10 kHz.
 1000 Hz.
 100 Hz.
 50 Hz.

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