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Electric Circuits

Electric Circuits
In parallel RLC circuit under resonance condition the value of current is

 Maximum
 Zero
None of these
 Minimum

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Electric Circuits
Ampere second is the unit of

 power.
 energy.
 conductance.
 charge.

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Electric Circuits
The hot resistance of a tungsten lamp is about 10 times the cold resistance. Accordingly, cold resistance of a 100 W, 200 V lamp will be

 800 Ω.
  40 Ω.
 4 Ω.
 400 Ω.

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Electric Circuits
The active and reactive power in an AC circuit are 10W and 20VAR respectively. What is the power factor?

 0.577.
 0.866.
 1.
 0.5.

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Electric Circuits
A capacitor of 50 microfarad is connected in series with a resistance of 120 Ω. If above circuit is connected across 240 V, 50 Hz 1 - φ supply. Find the capacitive reactance?

 1.765 Ω.
 0.015 Ω.
 63.7 Ω.
 135.86 Ω.

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Electric Circuits
For the circuit shown in the given figure the current I is given by

 1 A.
 2 A.
 4 A.
 3 A.

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MORE MCQ ON Electric Circuits

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