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Power Systems

Power Systems
Which of the following is used in thermal plants

 Otto cycle
 Rankine cycle
 Joule cycle
All of these

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Power Systems
If the frequency is increased, then skin effect will

 remains unaffected
 any of the above
 decreases
 increases

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Power Systems
How to find the total number of strands (N) when number of layers (x) are given

 Total number of strands N = 3x² - 3x - 1
 Total number of strands N = 3x² + 3x + 1
 Total number of strands N = 3x² + 3x - 1
 Total number of strands N = 3x² - 3x + 1

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

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

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Power Systems
The draw back of NR method as compare to Gauss-Seidel method is/are?

 both 1 and 2
 large number of iterations
None of these
 large requirement of computer memory

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Power Systems
Lightning arresters are made up of which material?

 any of the above
 silicon oxide
 silver
 copper

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