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Power Systems

Power Systems
In a 4 bus,4×4 Y bus matrix the number of non zero elements are 12. Find the number of transmission lines?

 5
 4
 2
 8

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Power Systems
An ACSR conductor has internal inductance 0.05 mH/Km for µr = 1. If this ACSR is replaced with another having µr = 2, then find the internal inductance?

 0.1 mH/Km
 0.05 mH/Km
 0 mH/Km
 0.025 mH/Km

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Power Systems
For transmission line which one of the following relation is true?

 AD - BC = 0
 AD - BC = 1
 AD - BC = -1
 AD + BC = 0

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Power Systems
In Francis turbine runner, the number blades is usually of the order of

 6 - 8.
 3 - 6.
 12 - 14.
  16 - 24.

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Power Systems
A moderator material should have

 large atomic mass.
  small atomic mass.
None of these
 may be any of the above.

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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-2)×(n-2)
 n×n

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