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Power Systems

Power Systems
Corona loss is ----------------- on hilly areas than as plain areas.

None of these
 remain same
 more
 less

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Power Systems
The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be

 210 Ω
 400 Ω
 420 Ω
 840 Ω

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Power Systems
An isolated synchronous generator with transient reactance equal to 0.1 pu on a 100 MVA base is connected to the high voltage bus through a step up transformer of reactance 0.1 pu on a 100 MVA base. The fault level at the bus is

 100 MVA
 500 MVA
 400 MVA
 200 MVA

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Power Systems
Which of the following statements is/are true? In case of parallel transmission lines

 stability increases
 fault current increases
 both 1 and 3
 fault current reduces

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Power Systems
Out of the following plant categories which is not the base load power plant?

  Pump storage.
 Nuclear.
 Diesel.
 Run of river.

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Power Systems
A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is

 8
 4
 10
 20

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