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Power Systems

Power Systems
Ferranti effect occurs under

 full load
 any of the above
 half load
 no load

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Power Systems
The ground capacitance existing between transmission line and ground is 4µF. Find the inductive reactance of the peterson coil for compensation of arcing grounds?

 265.25 Ω
 0.844 Ω
 855.26 Ω
 625.35 Ω

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Power Systems
The characteristic impedance of a transmission on line is

 Directly proportional to its length.
 Directly proportional to square root of its length.
  Independent of its length.
 Inversely proportional to its length.

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Power Systems
A thermal generating station has an installed capacity of 15 MW and supplies a daily load of 10 MW for 12 hours and 5 MW for remaining 12 hours. If the load factor is 0.8. Find the reserve capacity of the station?

 5 MW
 18 MW
 10 MW
 9 MW

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Power Systems
Bundled conductors are used for EHV transmission lines primarily for reducing the

 copper loss
 surge impedance of the line
 corona loss
 voltage drop across the line

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Power Systems
The radiation shield for a nuclear power reactor for biological safety is provided by having the reactor

 immersed in water pool.
  encased by thick concrete wall.
 isolated from outside word with strong magnetic field.
 encased thick metal wall.

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