Electrical Engineering MCQs

Page No. 226

Load shedding is possible through which of the following?


aSwitching of the loads


b Frequency reduction


cVoltage reduction


d Any of the above


View Answer Any of the above

Which of the following devices may be used to provide protection against lightening over voltages?


aHorn gaps


bRod gaps


c Surge absorbers


dAll of the above


View Answer All of the above

The effect of electric shock on human body depends on which of the following?


acurrent


bvoltage


cduration of contact


dall of the above


View Answer all of the above

Which of the following component, in a steam power plant, needs maximum maintenance attention?


aSteam turbine


bCondenser


cWater treatment plant


dBoiler


View Answer Boiler

Which of the following plants is almost inevitably used as base load plant?


aDiesel engine plant


b Gas turbine plant


cNuclear power plant


dPumped storage plant


View Answer Nuclear power plant

An over excited synchronous motor on no load is known as__________?


asynchronous condenser


b generator


cinduction motor


dalternator


View Answer synchronous condenser

Which of the following source of power is least reliable?


aSolar energy


b Geothermal power


cWind power


diMHD


View Answer iMHD

Which of the following is not a method for estimating depreciation charges?


aSinking fund method


bStraight line method


cDiminishing value method


d Halsey’s 50—50 formula



For a diesel generating station the useful life is expected to be around_________Years?


a15 to 20 years


b20 to 50 years


c50 to 75 years


d75 to 100 years


View Answer 15 to 20 years

Which of the following is not necessarily an advantage of interconnecting various power stations?


a Improved frequency of power supplied


bReduction in total installed capacity


cIncreased reliability


dEconomy in operation of plants



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