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Power Systems

Power Systems
For large plants of capacity for more than 15 MW, what type of cooling is used

  Liquid.
  Hydrogen.
  Air.
  Water.

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Power Systems
The radiation shield for a nuclear power reactor for biological safety is provided by having the reactor

 immersed in water pool.
 encased thick metal wall.
 isolated from outside word with strong magnetic field.
  encased by thick concrete wall.

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Power Systems
Based on the discharge, Kaplan turbine will discharge

 1000 lpm
 >10000 lpm

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Power Systems
A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead

 -10%
 6.92%
 -6.92%
 10%

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Power Systems
A penstock is used as a condition between

 the heat ex-changer and the turbine in nuclear power plant.
 the turbine and discharge drain.
  the dam and the turbine in a hydro station.
 none of above.

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Power Systems
For n bus power system size of Y bus matrix is

 n×n
 (n-2)×(n-2)
 (n-1)×(n-2)
 (n-1)×(n-1)

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