HomeElectricianQuick Electrical MCQ Quick Electrical MCQ Education March 18, 2023 0 1➤ A line from which loads are tapped off is called asFeederService mainsDistributorBoth B and C2➤ Buchholz relay is place between the......and the.....Main tank : bushingsMain tank: oil conservatorCooling tubes: main tankAll of these3➤ Due to the effect of arc resistance a relay tends toOverreach ReachDownreach Underreach4➤ Which of following Y parameter is dimensions less?Y11None of theseY22Y125➤ What is voltage rating of motor with rating upto 180KW230V765V415VAll of these6➤ In transformer the transformer oil transfers the heat byConvection CoductionRadiationCooling fans7➤ The smaller the lagging reactive power drawn from the circuitThe higher the p.fThe smaller the p.fThere is no change in p.fBoth B and C8➤ The power which is available under emergency conditions isHot reserveCold reserveFirm reserveSpinning reserve9➤ Which of the following is not a valid method of transistor biasing?Base resistor methodResistor dividor biasEmitter bias methodNone of these10➤ The energy in semiconductor Decrease with temperature Remains constant Increase with temperature Both a and b11➤ Steel is an alloy ofCopper and zincIron and copperIron and carbon Lead and tin12➤ In case of liquids ohms law isNot obyedPartially obyedFully obyedNone of above13➤ The parallel resonant cicuit magnifiesCurrent VoltageBoth a and bNone of these14➤ The impedance at parallel resonance is very large becauseRatio L/C is very largeNone of theseRatio L/C is very largeR is very large15➤ The difference between two half power frequency is calledBandwidth Q factorResonant frequency Mid frequency 16➤ The phase sequence of three phase system is RYB the other possible phase sequence can beRBYBRYYRBAll of these17➤ A 3 phase load is balanced if all the three phases have the sameImpedance Power factor None of theseBoth a and b18➤ The advantage of star connected supply system is thatLine current is equal to phase current It is simple arrangement Two voltages can be usedPhase sequence can be easily changed19➤ The wattmeter measures .......powerInstantenous AverageApparent All of these 20➤ In a 3 phase circuit if load current increase pf will beDecreaseIncreaseSameAll of these SubmitYour score is Tags Electrical MCQ for AE JE Electrician Newer Older