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Electric Circuits

Electric Circuits
Conductance of any conductor is expressed as

  mho.
  watt / ampere2.
  ampere / watt.
  volt2 / watt.

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Electric Circuits
Power factor can be defined as

 cosine of angle between voltage and current.
 ratio of resistance versus impedance.
 both option B and C.
 sine of voltage and current.

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Electric Circuits
Third pin of a 3 pin plug is thicker and longer

 for protection purpose.
 all pins are of same size.
 none of these.
 for designing purpose.

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Electric Circuits
An electrical motor has rating of 10 MVA at 0.8 lag, represented as series RL circuit at a 50 MVA base. Find the impedance value?

 (4 + j2 ) pu
 (2 + j4) pu
 (3 + j4) pu
 (4 + j3) pu

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Electric Circuits
Electro-chemical equivalent is usually expressed in

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

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Electric Circuits
A balanced 3 - φ star connected load is fed from a 208 V, 3 - φ supply. Each load has resistance of 35 Ω. The total power is

 618 W.
 411.3 W.
 1236 W.
 none of these.

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