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Electric Circuits

Electric Circuits
The capacitive reactance of a capacitor of (1 / 2μF) F at 103 Hz is

 10 6 μF.
 10- 3 μF.
 10- 6 μF.
 10 3 μF.

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Electric Circuits
The switch S is the circuit shown in figure is ideal. If the switch is repeatedly closed for 1 ms and opened for 1 ms, the average value of i(t) is

  0.25 mA.
 0.5 mA.
 0.35 mA.
 1 mA.

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Electric Circuits
In the network shown, what is the current I in the direction shown?

 0 A.
 1 / 3 A.
 4 A.
 5 / 6 A.

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Electric Circuits
Unit step function is first derivative of

 parabolic function.
 gate function.
 ramp function.
 impulse function.

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Electric Circuits
A circuit contains two unequal resistor in parallel

 voltage drops across both are same.
 currents in both are same.
 voltage drops are according to their resistive value.
 heat losses in both are same.

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Electric Circuits
If a pure inductor is connected across the ac source, the average power taken by the inductor is

 a few watt.
 maximum power.
 zero watt.
 100 watt.

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