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Power Systems

Power Systems
What should be the minimum depth (in metre)of cable trench to dug for laying of 1.1 kV?

 1.20.
 1.05.
 0.90.
  0.75.

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Power Systems
Installation of capacitors at suitable locations and of optimum size in a distribution system results in

 reduction of KVA rating of distribution transformers
All of these
 improved voltage regulation
 reduction in distribution power loss

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

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

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Power Systems
If the conductor diameter decreases, inductance of the line,

 decreases
None of these
 remains unaffected
 increases

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

 thermal plant
 nuclear plant
 pumped storage plant
 hydro power plant

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Power Systems
The function of a surge tank is to

  relieve water hammer pressure in the penstock.
 produce surge in the pipeline.
 none of above.
 supply water at constant pressure.

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