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Power Systems

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

 α²
 0
 α
 1

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Power Systems
A power station supplies the peak load of 50 MW, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55 the maximum demand on the station and average load respectively will be

 52 MW.
 57.5 MW.
  51.61 MW.
 53 MW.

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

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

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Power Systems
Which of the following power plants needs highly skilled/qualified engineers for its operation

 Gas-turbine.
 Nuclear.
 Hydro Power Plant
 Thermal.

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Power Systems
The essential requirement(s) for power plants to be operated as peak load plants are

All of these
 Capability of quick starts.
 Low capital cost.
 Quick response to load variation.

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Power Systems
Which of the following relays are used in protection of medium transmission lines?

 Admittance relays
 Impedance relays
 any of the above
 Mho relays

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