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POWER SYSTEMS

Power Systems
Which of the following power stations is mainly used to cover peak load on the system?

 gas based thermal power plant
 coal based thermal power plant
 nuclear plant
 pumped storage hydro power plant

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with reaction and adjustable vanes runners is

 Kaplan
 Impeller
 Francis
 Pelton

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Power Systems
A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is

 10
 20
 4
 8

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Power Systems
In an interconnected power system, the most suitable power plant to meet the peak load condition is

 hydro power plant
 thermal plant
 nuclear plant
 pumped storage plant

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Power Systems
The water from a catchment is 60*106 cu m annually and hydro station has head of 40 m. Assuming ideal generator and turbine, the power that can be theoretically generated is

 300 kW
 750 kW
 500 kW
 250 kW

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