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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

 900
 250
 500
 450

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Power Systems
Deflectors are provided in

 Francis turbine.
 Kaplan turbine.
 propeller turbine.
  Pelton wheel.

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Power Systems
Percentage of carbon is highest in

  anthracite coal.
  coal gas.
  bituminous coal.
  lignite coal.

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Power Systems
A thermal power plant is being supplied with coal having much more ash content than that for which it was designed. Which of its following units needs major modifications

 Cooling tower.
 Pulversing unit.
 Ash handling unit.
 Condenser.

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Power Systems
Highest pressure generating pump inside the thermal plant is

 boiler feed pump
 low pressure heater
 high pressure heater
All of these

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Power Systems
Find the value of a729, where "a" is the operator

 0
 1
 α
 α²

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