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Electric Circuits

Electric Circuits
The electrical conductivity of metal is typically of the order of (in ohm - m)

 105.
 10 - 6.
 10 - 4.
 107.

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Electric Circuits
In series R, L circuit power factor can be defined as

 Vr/V
 P/S
All of these
 R/Z

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Electric Circuits
2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

 60.
 105.
 75.
 15.

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Electric Circuits
In above question, if circuit efficiency is 90 %. What will be output power ?

  35.6 kW.
  37.3 kW.
  30 kW.
  40 kW.

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Electric Circuits
An alternating voltage = 140 sinθ is supplied to a device which offers a resistance of 20 Ω in forward direction of current in reverse direction. Calculate the form factor.

 0.318.
 1.11.
 1.414.
 0.57.

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Electric Circuits
Nodal analysis can be applied for

 planar networks.
 non planar networks.
 both planar and non planar networks.
 neither planar and non planar networks.

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MORE MCQ ON Electric Circuits

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