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Power Systems

Power Systems
Proximity effect is more in case of

 same in both cases
None of these
 power cables
 over head lines

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Power Systems
A generating station has a maximum demand of 50 MW a load factor of 60 %, a plant capacity factor of 45 % and if the plant while running as per schedule were fully loaded. The daily energy produced will be

 710 MW.
 730 MW.
 740 MW.
  720 MW.

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Power Systems
Making and breaking currents of 3 phase AC circuit breakers in power system are respectively in what form?

 Instantaneous and RMS value
 any of the above
 RMS and RMS value
 RMS and Instantaneous value

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Power Systems
A 1-phase transmission line has an impedance (4 + 3j ) Ω. Find the power factor of the load for zero voltage regulation?

 0.8 lag
 0.6 lag
 0.6 lead
 0.8 lead

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Power Systems
For n bus power system size of Y bus matrix is

 (n-1)×(n-1)
 (n-1)×(n-2)
 n×n
 (n-2)×(n-2)

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Power Systems
The fact that current density is higher at the surface when compared to centre is known as

 carona
All of these
 skin effect
 proximity effect

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