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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

 250
 500
 900
 450

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Power Systems
Find the number of strands of ACSR conductor for 4 layer transmission line?

 37
 29
 7
 1

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Power Systems
A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is

 20
 8
 10
 4

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Power Systems
Which of the following method is/are more reliable?

 Gauss-Siedel (GS) method
 Newton Raphson (NR) method
 Fast Decoupled Load Flow (FDLF) method
All of these

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Power Systems
Oxide film arrestor has which of the following properties?

 Both A and B.
 It is expensive.
 Installed at points of transmission line where daily visit is difficult.
 Does not require daily charging.

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Power Systems
In which of the following given faults, all the sequence currents are equal?

 LLL
 LLG
 LL
 LG

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