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Power Systems

Power Systems
Peak load power plants is/are

 pumped storage plant
 both 1 and 2
 nuclear plants
 diesel plant

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Power Systems
Find the relation between sub transient (X"), transient (X') and synchronous reactance (X) ?

 X" < X' < X
 X" < X' > X
 X" > X' >X
 X" > X' < X

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Power Systems
Non-commercial sources of energy are

  wood, animal wastes and agricultural wastes.
 fossil fuel, hydro power and nuclear power.
None of these
 solar, wind and biomass.

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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

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

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Power Systems
What is the preferred type of circuit breaker(CB) to be installed in extra high voltage AC system?

 Vacuum CB
 Air blast CB
 Bulk oil type CB
 Sulphur hexafluoride CB

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Power Systems
A power station supplies the peak load of 50 MW, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55 the maximum demand on the station and average load respectively will be

 53 MW.
 57.5 MW.
  51.61 MW.
 52 MW.

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