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Power Systems

Power Systems
The Y bus matrix of 100 bus interconnected system is 90% sparse. Hence the number of transmission lines in the system must be

 900
 250
 500
 450

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Power Systems
When a neutral point of 3 - Φ system is directly connected to earth then it has what type of grounding?

  Reactance.
  Peterson coil.
  Solid.
  Resistance.

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Power Systems
A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead

 -6.92%
 -10%
 10%
 6.92%

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Power Systems
Surge impedance loading of a 3-phase, 400 kV transmission line is 400 Ω. The surge impedance loading is

 1600 MW
 800 MW
 200 MW
 400 MW

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Power Systems
Pumped storage plant is a

 base load plant
 both 1 and 2
 peak load plant
None of these

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Power Systems
The receiving end voltage for a long line under no load condition is

 equal to the sending end voltage
 less than the sending end voltage
 more than the sending end voltage
 any of the above

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