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Power Systems

Power Systems
Normally Z bus matrix is a

 sparse matrix
 null matrix
 unit matrix
 full matrix

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Power Systems
If a generator of 250 MVA rating has an inertia constant of 6 MJ/MVA, its inertia constant on 100 MVA base is

 6 MJ/MVA
 10.5 MJ/MVA
 2.5 MJ/MVA
 15 MJ/MVA

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Power Systems
If the diameter of the conductor is increased

 the inductance is decreased
 the resistance is increased
 no change in inductance and resistance
 the inductance is increased

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Power Systems
Surge tank is kept very close to the

 spill way
 generator
 turbine
 pen stock

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Power Systems
Isolator in sub station is open under ------------- condition?

 any of the above
 short circuit
 no load
 full load

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Power Systems
In nuclear chain fission reaction each neutron causing fission produces

  at least one new neutron.
 one new neutron.
 less than one new neutron.
 no new neutron.

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