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Power Systems

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

 0.1 pu
 0.5 pu
 0.2 pu
 0.4 pu

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Power Systems
Attenuation occurs due to

 both 1 and 3
 conductance
 inductance
 resistance

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Power Systems
The commercial sources of energy are

  fossile fuels and radioactive substances.
 none of above.
 solar, wind, biomass.
 wood, animal wastes and agricultural wastes.

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Power Systems
Reactance relays are used for the protection of

 medium transmission lines only
All of these
 short transmission lines only
 long transmission lines only

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Power Systems
A diesel power station has fuel consumption of 0.28 Kg per kWh. The calorific value of fuel is being 10000 KCal / kg. Determine the overall efficiency

 40.85 %.
  30.7 %.
 40 %.
  30.26 %.

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Power Systems
In which of the following configuration power transferability is higher?

 horizontal configuration
 triangular configuration
 same in both configuration
None of these

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