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Power Systems

Power Systems
In thermal plant most of the energy is wasted in

 boiler
 turbines
 ESP
 condenser

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Power Systems
The flow duration curve at a given head of a hydroelectric plant is used to determine

  total power available at the site.
 total units of energy available.
 diversity factor for the plant.
 load factory at the plant.

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Power Systems
Equal area criterion gives the information regarding

 absolute stability
 swing curves
 relative stability
 stability region

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Power Systems
The per unit impedance Z(pu) is given by

 ZΩ* (MVA)b*100/(KV)²b
 ZΩ* (MVA)b/(KV)²b
 ZΩ* (MVA)b/((KV)²b *100)
 ZΩ* (kVA)b/(KV)²b

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Power Systems
What is the function of economiser in steam boilers

 cooling
 improving thermal efficiency
All of these
 collect ash particals

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Power Systems
If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400 : 5, then plug setting multiplier will be

 50.
 10.
 25.
 15.

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