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POWER SYSTEMS

Power Systems
The rate of rise of re-striking voltage is dependent upon

 capacitance of the system only
 both 1 and 2
 resistance of the system only
 inductance of the system only

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Power Systems
For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

 six
 one
 two
 three

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Power Systems
Asynchronous tie line is a

 DC transmission line
 AC transmission line
None of these
 either 1 or 2

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Power Systems
Frequencies must be same in which of the following line to exchange the power from one place to other place ?

 both 1 and 2
 No need of same frequency for exchange of power
 Asynchronous line
 Synchronous line

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Power Systems
Which of the following statements is/are true regarding HVDC?

 There is no skin effect in dc line
All of these
 HVDC can utilize earth for its return path
 Corona loss is very much reduced in the dc line

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