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Power Systems

Power Systems
In thermal plant most of the energy is wasted in

 ESP
 condenser
 turbines
 boiler

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Power Systems
The function of moderator in a nuclear reactor is

  to slow down the neutrons.
All of these
 to absorb the excess.
 to increase the energy of the neutrons.

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Power Systems
Aluminium is now most commonly employed conductor material in transmission lines than copper because

 its tensile strength is more
 costlier
 it is more conductive
 it is cheaper and lighter

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Power Systems
A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

 0.2 pu
 2.4 pu
 3.975 pu
 1.375 pu

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Power Systems
Which of the following statement is/are true regarding infinite line?

 It has infinite voltage
 It maintains the constant voltage
 both 2 and 3
 It has infinite length

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Power Systems
To improve the efficiency of thermal power plant ________________ is placed between boiler and turbine.

  superheater.
  ash handling point.
  economizer.
  air preheater.

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