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Electric Circuits

Electric Circuits
Galvanizing is the coating of

 lead.
 zinc.
 chromium.
 brass.

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Electric Circuits
For ideal tank circuit, what is the value of dynamic admittance?

 Both
None of these
 0
 ∞

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Electric Circuits
If conductance increases as temperature increases it is called as ..........

 negative co-efficient.
 positive co-efficient.
 both 1 and 2.
None of these

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Electric Circuits
An AC voltage of 200 V at 50 Hz is applied to a coil which draws 5 A and dissipates 1000 W. The resistance and impedance of the coil respectively are

 50 Ω and 200 Ω.
 40 Ω and 200 Ω.
 25 Ω and 5 Ω.
 40 Ω and 40 Ω.

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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

 4 Ω.
 400 Ω.
 800 Ω.
  40 Ω.

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Electric Circuits
In what connection we get neutral?

  Delta.
  Both A and B.
  Mesh.
  Star.

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MORE MCQ ON Electric Circuits

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