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Electric Circuits

Electric Circuits
Which of the followings is/are active element?

 Both
 None of these.
 Voltage source
 Current source

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Electric Circuits
Inductor does not allow the sudden change of

 current
 voltage
None of these
 power

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Electric Circuits
1 F is theoretically equal to

 1 ohm of resistance
 ratio of 1 V to 1 C
 ratio of 1 C to 1 V
 none of these

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Electric Circuits
A 100 μF capacitor supplied from 3 V source with a frequency of 50 Hz. The capacitive reactance is

 31.84 Ω.
 7.96 Ω.
 63.68 Ω.
 15.92 Ω.

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Electric Circuits
Under resonance condition the power factor of a system is

 unity
 leading
 any of the above
 lagging

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Electric Circuits
If a resistor and an inductor are connected in series across a voltage source. Which two parameters in that circuit increase if frequency of voltage source increases?

 VL and VR.
 Z and I.
 VL and Z.
 VL and I.

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MORE MCQ ON Electric Circuits

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