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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

 500
 900
 450
 250

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Power Systems
Asynchronous tie line is a

 either 1 or 2
None of these
 DC transmission line
 AC transmission line

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Power Systems
The conductor carries more current on surface as compared to core. This is called as

 corona effect
 unsymmetrical fault
All of these
 skin effect

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Power Systems
Which of the following are the fissile materials

 U238 and Th232.
  None of these.
 U235, U233 and Pu239.
 U235 and Th239.

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Power Systems
In a nuclear reator thermal energy is obtained from

  fission of radioactive material.
 fusion of radioactive material.
 all of above.
 burning of fuel rods in oxygen.

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Power Systems
A hydro electric generating station is supplied from a reservoir of capacity 5 × 10 − 6 cubic meters at a head of 200 meters. Find the total energy available in KWh if the overall efficiency is 75 %

  2.044 × 106 kWh.
 5 × 106 kWh.
 3 × 106 kWh.
 4.06 × 106 kWh.

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