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Power Systems

Power Systems
One fission of U235 releases energy of

 435 MeV.
 335 MeV.
  200 MeV.
 525 MeV.

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Power Systems
A steam power generation has an overall efficiency of 20 %. 0.6 Kg of coal is burnt per kWh of electrical energy generated. Calculated the calorific value of fuel

 7268.45 KCal / Kg.
 7000 KCal / Kg.
 7562 KCal / Kg.
  7166.67 KCal / Kg.

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Power Systems
Advantages of gauss siedel method is/are

 calculation time for each iteration is less
All of these
 number of iterations are less
 applicable for large power system network

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Power Systems
Plug setting of a relay can be altered by varying

 air gap of magnetic path.
 adjustable back up stop.
 no. of ampere-turns.
 none of these.

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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

 250 kW
 500 kW
 300 kW
 750 kW

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Power Systems
If the frequency is increased, then skin effect will

 remains unaffected
 increases
 any of the above
 decreases

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