Electrical Engineering MCQs

Page No. 235

Generators for peak load plants are usually designed for maximum efficiency at____________?


a25 to 50 percent full load


b 50 to 75 percent full load


cfull load


d25 percent overload



For a power plant which of the following constitutes running cost?


aCost of wages


bCost of fuel


cCost of lubricants


dAll of the above


View Answer All of the above

Static capacitors are rated in terms of_____________?


akW


bkWh


ckVAR


dnone of the above


View Answer kVAR

Which of the following generating station has minimum running cost ?


a Nuclear


bHydro


cThermal


d Diesel


View Answer Hydro

Which plant can never have 100 percent load factor?


aPeak load plant


bBase load plant


cNuclear power plant


dHydro electric plant


View Answer Peak load plant

In two part tariff, variation in load factor will affect____________?


afixed charges


boperating or running charges


cboth A. and (b)


deither A. or (b)



Load factor of a power station is generally___________?


aequal to unity


bless than unity


cmore than unity


dequal to zero Diversity factor is always


View Answer less than unity

Superposition theorem can be applied only to circuits having____________?


aresistive elements


bpassive elements


cnon-linear elements


dlinear bilateral elements



Kirchhoffs voltage law is related to_____________?


a junction currents


bbattery e.m.fs.


cIR drops


dboth B. and C.


View Answer both B. and C.

To determine the polarity of the voltage drop across a resistor, it is necessary to know___________?


avalue of current through the resistor


bdirection of current through the resistor


cvalue of resistor


de.m.fs. in the circuit



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