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Power Systems

Power Systems
Pipes carrying steam are generally of

 cast iron.
  steel.
 cobalt.
 aluminium.

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Power Systems
The function of reflector is to

  bounce back most of the neutrons that escape from the fuel core.
 stop the chain reaction.
 none of above.
 reduce the speed of the neutrons.

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

  Hydrogen.
  Air.
  Liquid.
  Water.

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Power Systems
A transmission line has 50 km operating at frequency of 500 Hz. Find the type of the line?

 any of the above
 short transmission line
 long transmission line
 medium transmission line

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Power Systems
For a 500 Hz frequency excitation, a 100 km long power line will be modelled as

 shunt capacitor
 medium transmission line
 any of the above
 long transmission line

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Power Systems
A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is

 800 Ω
 400 Ω
 0 Ω
 200 Ω

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