Power Systems
Which of the following is/are the stator faults?

 over current
All of these
 Inter phase faults
 failure of excitation

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Power Systems
The value of off diagonal elements is

 sum of admittances connected at bus i
 sum of admittances connected at bus j
 which is connected between bus i and bus j with positive sign
 which is connected between bus i and bus j with negative sign

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Power Systems
Half life is defined as

 the time required to spiliting of a heavy nucleus.
 none of above.
  the time required for one half of isotope to decay.
 the time required for full of atoms in a specimen disintegrate.

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