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Power Systems

Power Systems
Making current is a------------ value?

 RMS
 average
 peak value
 any of the above

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Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage?

 -18.18 kV
 -81.82 kV
 18.18 kV
 81.82 kV

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Power Systems
In hydro power stations what is an enlarged body of water just above the intake and used as a regulating reservoir called

 Reservoir.
  Fore bay.
 Penstock.
 Spillways.

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Power Systems
A cable has the following characteristics, L = 0.201 µH/m and C = 196.2 pF/m. The velocity of wave propagation through cable is

 159.24 m/s
 0.0312 m/s
 159.24 m/µs
 32 m/s

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Power Systems
The equation of area control error(ACE) is

 ACE = ΔPtie - 1/b.Δf
 ACE = ΔPtie +1/ b.Δf
 ACE = ΔPtie + b.Δf
 ACE = ΔPtie - b.Δf

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Power Systems
Direct conversion of heat energy into electrical energy is possible through

 Fuel or solar cell.
 Both A and C.
 Thermal converters.
 MHD generator.

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