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Power Systems

Power Systems
More efficient plants are used as

 base load plant
None of these
 both 1 and 2
 peak load plant

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Power Systems
If the penalty factor of a plant is unity, its incremental transmission loss is

 -1
 1
 0
None of these

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Power Systems
The essential requirement(s) for power plants to be operated as peak load plants are

 Quick response to load variation.
All of these
 Capability of quick starts.
 Low capital cost.

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Power Systems
Find the number of insulator discs required in string insulator, if operating voltage is 220 kV and maximum voltage of each disc is 11 kV?

 10
 21
 13
 20

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Power Systems
In load flow studies PV bus is treated as PQ bus when

 phase angle become high
 voltage at the bus become high
 any of the above
 reactive power goes beyond limit

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Power Systems
A transmission line has self and mutual impedances are 0.8 and 0 pu respectively. Find the positive, negative and zero sequence impedances respectively?

 0.6, 0.8 and 1.2 pu
 0.6, 0.6 and 0.6 pu
 0.6, 0.6 and 1.2 pu
 0.8, 0.8 and 0.8 pu

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