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Power Systems

Power Systems
The value of inductance used for compensation of arcing grounds is

 1/3ω²C
 ω²C/3
 3/ω²C
 3ω²C

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Power Systems
The characteristic impedance of a transmission on line is

  Independent of its length.
 Inversely proportional to its length.
 Directly proportional to square root of its length.
 Directly proportional to its length.

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Power Systems
A 3 layer and diameter of each strand is d, then find the total diameter of ACSR conductor?

 5d
 3d
 2d
 d

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Power Systems
NTPC (National Thermal Power Cooperation) has its only thermal power generating unit in West Bengal at

 Farakka.
 Durgapur.
 Katwa.
 Bakreshwar.

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Power Systems
A hydro power plant of run off river type should be provided with pondage so that the

 pressure inside the turbine casing remains.
 kinetic energy of the running water is fully utilized.
  firm capacity of plant is increased.
 operating head is controlled.

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Power Systems
Characteristics of arc quenching medium is/are

 Non flammable
All of these
 High thermal conductivity
 High dielectric strength

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