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Power Systems

Power Systems
Surge tank is kept very close to the

 pen stock
 turbine
 spill way
 generator

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Power Systems
Which material is used in controlling chain reaction in a nuclear reactor

 Heavy water.
 Beryllium.
 Thorium.
  Boron.

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Power Systems
Which one of the following relays has the capability of anticipating the possible major fault in a transformer?

 Buchholz relay
 Over current relay
 Differential relay
 Over fluxing relay

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Power Systems
Which of following are the fertile materials

 U238 and Th239.
  U238 and Th232.
 U233 and Pu239.
 U238 and Pu239.

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Power Systems
Objectives of power system is/are

 both 1 and 2
 Cost of electrical energy per KWh is to be minimum
 Rated voltage and frequency has to be supplied to the consumers
 nether 1 nor 2

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Power Systems
A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm sinωt?

 9.68 msec
 2.63 msec
 1.47 msec
 4.68 msec

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