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Power Systems

Power Systems
Specified quantities of load bus are

 P and Q
 P and δ
 V and δ
 Q and V

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Power Systems
Which of following materials can be used as coolant

 CO2.
  Any of above.
 Heavy water.
 Helium.

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Power Systems
A 20 MVA generator has inertia constant of 0.5 pu. Find new value for 50 MVA base?

 0.2 pu
 0.4 pu
 0.5 pu
 0.1 pu

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Power Systems
A 1-phase transmission line has an impedance (3+4j) Ω . Find the power factor of the load for achieving maximum and zero voltage regulation?

 0.8 lag and 0.6 lead
 0.6 lag and 0.6 lead
 0.8 lag and 0.8 lead
 0.6 lag and 0.8 lead

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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
Which of the following material is not used as fuse element?

  Copper.
  Silver.
  Carbon.
  Aluminium.

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