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Power Systems

Power Systems
Operating time of pumped storage plant is

 very high
 low
 can't say
 high

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Power Systems
Find the relation between sub transient (X"), transient (X') and synchronous reactance (X) ?

 X" > X' < X
 X" < X' > X
 X" < X' < X
 X" > X' >X

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Power Systems
Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable?

 Oil CB.
 Any of these.
 Air blast CB.
  Vacuum CB.

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Power Systems
Mho relay is usually employed for protection of

 short transmission lines only
 any line
 medium transmission lines only
 long transmission lines only

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Power Systems
Calorific value of solid fuel is expressed as

  Cal / lt.
  Cal / gm.
  KCal / gm.
  KCal / lt.

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Power Systems
The rate of rise of restricting voltage depends upon the

 Type of CB.
 Capacitance of the system.
 Inductance of the system.
  Inductance and capacitance of the system.

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