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Electric Circuits

Electric Circuits
A branch of a network is said to be passive when it contains

 current source.
 voltage source.
 battery.
 voltmeter.

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Electric Circuits
Efficiency of electrical machines should be calculated by measuring

 losses and input.
 output and input.
 losses and output.
 losses.

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Electric Circuits
If emf in a given circuit is given by e = 100 sinω0t, then maximum value of voltage and frequency will be

 100√2 V, 100 Hz.
 100 V, 50 Hz.
 50√2 V, 100 Hz.
 100 V, 100 Hz.

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Electric Circuits
In an AC circuit, containing pure inductance, the voltage applied is 120 V, 50 Hz while the current is 10 A. Find the value of inductance.

 35 mH.
 30 mH.
 34 mH.
 38 mH.

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Electric Circuits
If two point charges are denoted by + Q and - Q and distance between this charges is d, then the dipole moment P equal to

  Q2 / d.
  Q / d2.
  Q2 × d.
  Q × d.

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Electric Circuits
From the circuit diagram shown in question 1 find the thevnin voltage.

 3 V.
 15 V.
 1.5 V.
 5 V.

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MORE MCQ ON Electric Circuits

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