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Power Systems

Power Systems
Specified quantities of slack bus are

 P and δ
 P and V
 P and Q
 V and δ

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Power Systems
Maximum efficiency of modern coal fired steam raising thermal power plants is restricted to about 035 (a low value), mainly because of

 low alternative efficiency.
 high energy loss in boiler.
 low steam turbine mechanical efficiency.
  high energy loss from turbine exhaust to condenser.

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Power Systems
Mercury is choice with steam in binary vapor cycle because

 higher critical temperature and pressure.
 higher saturation temperature than other fluids.
  all of above.
 relative low vaporization pressure.

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Power Systems
MCB stands for

  miniature circuit breaker.
  maximum capacity breaker.
  molded circuit breaker.
  minimum capacity breaker.

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Power Systems
If the time of operation of a relay for unity TMS is 10 sec. the time of operation of 0.5 TMS will be _______________ secs.

 20.
 7.
 3.
  5.

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Power Systems
Surge impedance loading of a line is increased by which of the following compensation methods?

 shunt capacitor
 both 1 and 2
 shunt reactor
 series capacitor

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