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Power Systems

Power Systems
Operating time of pumped storage plant is

 low
 can't say
 high
 very high

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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.
  encased by thick concrete wall.
 isolated from outside word with strong magnetic field.

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Power Systems
For variable heads of near about but less than 30 meters, which type of turbine is used in hydro power station?

 Kaplan
None of these
 Francis
 Pelton

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Power Systems
Graphite is use din nuclear plant as a / an

 electrode.
 coolant.
  moderator.
 fuel.

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Power Systems
By using guard ring in a transmission line, its string efficiency

 increase
None of these
 remains unaffected
 decrease

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Power Systems
A fuse wire of circular cross-section has a radius of 0.8 mm. The wire blows off at an current of 8 Amp. Calculate the radius of wire that will blow off at an current of 1 amp?

 0.4 mm.
  0.2 mm.
 2 mm.
 4 mm.

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