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Power Systems

Power Systems
A gas turbine power plant is best suited for

 Emergency.
 None of these.
 Peak load.
 Base load.

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Power Systems
In a short circuit test circuit breaker, time to reach the peak re-striking voltage 60 microsecond & the peak re-striking voltage 120 kV. Determine average RRRV (Rate of rise re-striking voltage)?

  3 × 106 kV / sec.
 3.5 × 106 kV / sec.
 1 × 106 kV / sec.
  2 × 106 kV / sec.

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Power Systems
The maximum demand of a consumer is 2 kW and corresponding daily energy consumption is 30 units. What is the corresponding load factor?

 75%
 25%
 50.5%
 62.5%

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Power Systems
The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be

 7.936 pu
 9.936 pu
 8.936 pu
 10.936 pu

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Power Systems
Isolator in sub station is open under ------------- condition?

 any of the above
 short circuit
 no load
 full load

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with reaction and adjustable vanes is

  Kaplan.
 Pelton.
 Impeller.
 Francis.

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