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Power Systems

Power Systems
Hydro-graph is similar to

 both B and C.
 energy load curve.
  load curve.
 mass curve.

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Power Systems
In a three-phase system, when the loads are perfectly balanced, the neutral current is

  two - thirds of maximum.
  one - third of minimum.
  zero.
  one - third of maximum.

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Power Systems
A synchronous generator is of 100 MVA have inertia constant of 20 MJ/MVA. Find the angular momentum in MJsec/electrical degrees

 5
 0.4
 2000
 0.22

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Power Systems
Find the surge impedance of a line when inductance is 160 mH and capacitance is 1µF?

 400 Ω
 200 Ω
 160 Ω
 800 Ω

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Power Systems
If power P available from a hydroelectric plant is given by the formula P = 9.81QH, where Q is the flow rate through the turbine in l / s and H is the head in meters, then P will be unit of

 kWh.
 HP.
 kJ / S.
  W.

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Power Systems
If a generator of 250 MVA rating has an inertia constant of 6 MJ/MVA, its inertia constant on 100 MVA base is

 2.5 MJ/MVA
 6 MJ/MVA
 15 MJ/MVA
 10.5 MJ/MVA

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