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Power Systems

Power Systems
If skin depth is more, then skin effect is

 less
 either 1 or 2
 more
None of these

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Power Systems
Which of the following power plants can generate power at unpredictable or uncontrollable time

 Pulverising unit.
 Condenser.
 Cooling tower.
 Wind turbine.

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Power Systems
A network containing 100 buses in which 10 are the voltage control buses, 5 are fixed shunt capacitor buses, 20 are the reactive power support buses, 6 are the generator buses. Find the size of the Jacobian matrix?

 162 × 162
 165 × 165
 163 × 163
 164 × 164

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Power Systems
Surge tank is kept very close to the

 generator
 spill way
 turbine
 pen stock

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

 two
 six
 three
 one

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Power Systems
A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is

 2.26 Ω / phase.
  8.06 Ω / phase.
 6.06 Ω / phase.
 4.65 Ω / phase.

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