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Power Systems

Power Systems
For n bus power system size of Y bus matrix is

 (n-1)×(n-2)
 (n-2)×(n-2)
 n×n
 (n-1)×(n-1)

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Power Systems
Which of the following is low specific speed turbine?

 Kaplan
None of these
 Francis
 Pelton

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Power Systems
In which power plant, the thermal efficiency is quite low

  Hydro power plant.
  Nuclear power plant.
  Steam power plant.
  Diesel power plant.

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Power Systems
In thermal power stations, economiser will

 reduce the heat
 reduce the thermal efficiency
 increase the thermal efficiency
 both 2 and 3

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Power Systems
The time taken by the turbine to fall to 0 rpm speed from 3000 rpm is called

  stopping time.
  coasting time.
  settling time.
  damping time.

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Power Systems
A 4 bus power system consists of 4 transmission lines, then find the sparsity of Y bus matrix?

 0.25
 0.4
 0.5
 0.75

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