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Electric Circuits

Electric Circuits
Form factor is equal to Peak factor in case of

 square wave.
 saw tooth wave.
 triangle wave.
All of these

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Electric Circuits
The resistance of 200 W, 200 V lamp is

 100 Ω.
 400 Ω.
  200 Ω.
 800 Ω.

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Electric Circuits
A parallel plate capacitor contain there dielectric layers of 1, 2 and 3 respectively and thickness of dielectric layers are 0.2 mm, 0.3 mm and 0.4 mm respectively. If area of plate is 20 cm2. What is the value of capacitance?

 36.6 pF.
 30 pF.
 None of them.
 32 pF.

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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.
 0.5.
 1.

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Electric Circuits
What would be the power given by source V2?

 5 W.
 10 W.
 0 W.
 - 5 W.

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Electric Circuits
A variable capacitance is one whose capacitance

 can be changed manually or by mechanical force.
 changes with temperature.
 changes with time.
 changes with voltage.

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MORE MCQ ON Electric Circuits

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