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Power Systems

Power Systems
Ferranti effect occurs under

 any of the above
 full load
 half load
 no load

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Power Systems
A power station has a maximum demand of 15000 kW. The annual load factor is 50% and plant capacity factor is 40%. What is the reserve capacity of the plant?

 3000 kW
 7500 kW
 6000 kW
 3750 kW

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Power Systems
Condition for maximum voltage regulation

 cosφ = R/X
 tanφ = R/X
 tanφ = X/R
 cosφ = X/R

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Power Systems
For variable heads of near about but less than 30 m, which type of turbines is used hydro power plant

 Francis.
 None of above.
  Kaplan.
 Pelton.

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Power Systems
Advantages of per unit system is/are

All of these
 Need of transformation ratio
 It has units for all quantities
 No units for any quantity

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Power Systems
In hydro power stations what is an enlarged body of water just above the intake and used as a regulating reservoir called

  Fore bay.
 Spillways.
 Penstock.
 Reservoir.

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