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Electric Circuits

Electric Circuits
The energy stored by a capacitor is given by

 all of them.
 1/2 QV.
 Q2 / 2C.
 1/2 CV2.

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Electric Circuits
Electro-chemical equivalent is usually expressed in

  mg per kVA.
  mg per kW.
  mg per volt.
  mg per coulomb.

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Electric Circuits
If a resistor and a capacitor are connected to form series R - C circuit across a voltage source. If frequency of voltage source increases

 the current decreases abruptly.
 the current decreases.
 the current remain unaltered.
 the current increases.

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Electric Circuits
Purpose of using capacitor is / are

 effect DC filter in electronic circuit.
 to do phase split in AC 1 phase motor.
 increase p.f of inductive load circuit.
 all of these.

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Electric Circuits
What is the value of charge of an electron?

 1.6022 × 10-7 Coulomb
 1.6022 × 10-19 Coulomb
 1.6022 × 10-8 Coulomb
 1.6022 × 10-27 Coulomb

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Electric Circuits
Three resistances have the following ratings 150 Ω at 5 %, 100 Ω at 5 % and 200 Ω at 5 % respectively. The percentage error when all the three are connected in series will be

  + 6 %.
 + 8 %.
  + 5 %.
 + 7 %.

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MORE MCQ ON Electric Circuits

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