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Electric Circuits

Electric Circuits
For symmetrical wave form average value of one full cycle is

 1
 1.11
 2.22
 0

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Electric Circuits
A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the value of C?

 4.78 µF.
 1.8 µF.
 8.51 µF.
 10.54 µF.

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

 leading
 lagging
 any of the above
 unity

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Electric Circuits
In given figure, the value of resistance R in Ω is

 2.5 Ω
 1 Ω
 3.5 Ω
 4.5 Ω

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Electric Circuits
Which property is used to oppose the flow of current ?

 Capacitance
 Resistance
 Poteintial difference
 Inductance

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Electric Circuits
The capacitance of a conductor is varying from 2 microfarad to zero in 1 sec linearly if the voltage applied to it is 6 V the energy stored in 0.5 sec in the condenser is

 20 µ joules.
 18 µ joules.
  55.1 µ joules.
 10 µ joules.

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MORE MCQ ON Electric Circuits

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