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Power Systems

Power Systems
Peak load power plants is/are

 diesel plant
 pumped storage plant
 nuclear plants
 both 1 and 2

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Power Systems
A thermal protection relay provides protection against what?

 Short circuit
 Over load
 Temperature
 any of the above

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Power Systems
Advantages of per unit system is/are

All of these
 No units for any quantity
 Need of transformation ratio
 It has units for all quantities

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Power Systems
Direct conversion of heat energy into electrical energy is possible through

 Both A and C.
 MHD generator.
 Thermal converters.
 Fuel or solar cell.

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Power Systems
A guard ring is used in string type insulator having 3 units to improve string efficiency. Find the capacitance of metal link 2 if pin to earth capacitance of each unit is 1 F?

 4 F
 2 F
 0.5 F
 1 F

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

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

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