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Power Systems

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

 3d
 5d
 2d
 d

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Power Systems
What is the approximate efficiency of a normal thermal power station?

 30-40%
 20-25%
 45-55%
 60-70%

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Power Systems
Which of the following is an impulse turbine

  Francis turbine.
  Pelton turbine.
  Kaplan turbine.
  None of above.

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Power Systems
Which of the following power plants can generate power at unpredictable or uncontrollable time

 Wind turbine.
 Pulverising unit.
 Condenser.
 Cooling tower.

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Power Systems
Characteristics of arc quenching medium is/are

All of these
 High dielectric strength
 Non flammable
 High thermal conductivity

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Power Systems
Keeping in view the cost and overall effectiveness, the following circuit breaker is suited for capacitor bank switching

  air blast.
  oil.
  SF6.
  vacuum.

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