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Power Systems

Power Systems
One atomic mass unit is equivalent to

 180.5 MeV.
  931.4 MeV.
 120.4 MeV.
 251.2 MeV.

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Power Systems
Mho relay is usually employed for protection of

 any line
 long transmission lines only
 short transmission lines only
 medium transmission lines only

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Power Systems
Length of short transmission line is up to

 40 km
 any of the above
 80 km
 150 km

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Power Systems
Transmission line has a length of 300 km, operating at sending end voltage Vs = 1 pu, find the receiving end voltage(Vr) at no load?

 0.98 pu
 1 pu
 1.098 pu
 0.098 pu

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Power Systems
In which of the following frequency control method tie line may be overloaded?

 parallel frequency
 flat frequency control
All of these
 flat tie line control

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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
 it is more conductive
 costlier
 it is cheaper and lighter

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