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Power Systems

Power Systems
The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base?

 0.1 pu
 0.25 pu
 0.4 pu
 0.2 pu

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Power Systems
Bundled conductors are used for EHV transmission lines primarily for reducing the

 corona loss
 copper loss
 surge impedance of the line
 voltage drop across the line

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Power Systems
In which of the following given faults, all the sequence currents are equal?

 LLG
 LL
 LLL
 LG

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Power Systems
A moderator material should have

  small atomic mass.
 large atomic mass.
 may be any of the above.
None of these

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Power Systems
An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 500/5. The plug setting multiplier for a fault current of 5 kA is

 5
 2
 6
 8

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Power Systems
Proximity effect depends on

 distance between the conductors
 relative permeability
 frequency
All of these

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