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Electric Circuits

Electric Circuits
What is I1 in the given circuit?

  1.5 A.
  0.5 A.
  1 A.
  3 A.

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Electric Circuits
If a capacitors of capacitance 100 μF is connected across a voltage source of 10 V, then what will be the energy stored in that capacitor?

 10 × 10 - 3 Joule.
 5 × 10 - 2 Joule.
 10 × 10 6 Joule.
 5 × 10 - 3 Joule.

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Electric Circuits
Which of the following is the correct relation?

 AD-BC = 1.
 AC-BD = 1.
 AB-CD = 1 .
 all of these.

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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.
 1.
 0.866.
 0.5.

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Electric Circuits
What is represented by the hypotenuse of impedance triangle?

 Reactance drop.
 Apparent power.
 Impedance drop.
 Resistance drop.

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Electric Circuits
When a lossy capacitor with a dielectric of permittivity ε and conductivity σ operates at a frequency ω the loss tangent for the capacitor is given by

 ω ε/σ.
 σ ω ε.
 ω σ/ε.
  σ/ω ε.

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MORE MCQ ON Electric Circuits

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