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Power Systems

Power Systems
Which turbine is ideally suited to pumped storage plants

 Impeller.
  Kaplan.
 Pelton.
 Francis.

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

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

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Power Systems
Surge impedance loading of a transmission line can be increased by

 addition of lumped inductance in parallel
 increasing its voltage level
 both 1 and 3
 addition of lumped capacitance in series

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Power Systems
Positive, negative and zero sequence impedances of line are 2,2 and 5 pu respectively. Find self and mutual impedances respectively?

 3 and 1 pu
 1 and 3 pu
 2 and 5 pu
 2 and 2 pu

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Power Systems
The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by

 A resistance of 100 ohm.
 A resistance of 100/3 ohm.
 A resistance of j100/3 ohm.
 A resistance of j300 ohm.

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Power Systems
What is the total installed power capacity (MW) in West Bengal as published by ministry of power in 2011?

 8113.27.
 6114.05.
 10000.32.
 15515.22.

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