Electrical Engineering MCQs

Page No. 235

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


a25 to 50 percent full load

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b 50 to 75 percent full load

✓


cfull load

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d25 percent overload

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


aCost of wages

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bCost of fuel

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cCost of lubricants

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dAll of the above

✓


View Answer All of the above

Static capacitors are rated in terms of_____________?


akW

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bkWh

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ckVAR

✓


dnone of the above

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View Answer kVAR

Which of the following generating station has minimum running cost ?


a Nuclear

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bHydro

✓


cThermal

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d Diesel

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View Answer Hydro

Which plant can never have 100 percent load factor?


aPeak load plant

✓


bBase load plant

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cNuclear power plant

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dHydro electric plant

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View Answer Peak load plant

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


afixed charges

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boperating or running charges

✓


cboth A. and (b)

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deither A. or (b)

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Load factor of a power station is generally___________?


aequal to unity

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bless than unity

✓


cmore than unity

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dequal to zero Diversity factor is always

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View Answer less than unity

Superposition theorem can be applied only to circuits having____________?


aresistive elements

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bpassive elements

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cnon-linear elements

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dlinear bilateral elements

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Kirchhoffs voltage law is related to_____________?


a junction currents

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bbattery e.m.fs.

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cIR drops

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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

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bdirection of current through the resistor

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cvalue of resistor

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de.m.fs. in the circuit

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