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Power Systems

Power Systems
Mho relay is used for protection of

  none of these.
  long lines.
  short lines.
  medium lines.

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Power Systems
Generation of of one watt needs about ______________ fission per second

 3.1.
 3.1 × 107.
  3.1 × 1010.
 3.1 × 106.

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Power Systems
Non-commercial sources of energy are

 solar, wind and biomass.
  wood, animal wastes and agricultural wastes.
 fossil fuel, hydro power and nuclear power.
None of these

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Power Systems
Maximum power transfer capability of transmission line can be increased by

 Parallel transmission lines
All of these
 Using bundled conductors
 Using series capacitance

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Power Systems
Units of incremental cost is

 RsMW/hr
 Rs/hr
 MWhr/Rs
 Rs/MWhr

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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)?

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

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