Electromagnetic Induction Question & AnswersSeptember 20, 2021 By Wat Electrical Leave a Comment This article lists 100 Electromagnetic Induction MCQs for Engineering Students. All the Electromagnetic Induction Questions & Answers given below includes solution and link wherever possible to the relevant topic.Electromagnetic induction is the ability of a magnetic field to create current inside a conductor. Hans Christian Orsted has shown that if you have current in a wire creates a magnetic field and that magnetic field could affect the compass needle which is a small little magnet, so current can produce magnetic fields. 1). Which one of the following is represented by a symbol ф?Magnetic fluxMagnetic resistivityElectric resistivityNone of the aboveHintThe magnetic flux is represented by a symbol ф 2). The existing force in magnetic circuit is _____________EMFMMFBoth a and bNone of the aboveHintThe existing force in the magnetic circuit is the magnetomotive force 3). The response in electric circuits is ___________________CurrentFluxVoltageNone of the aboveHintThe response in electric circuits is current 4). The ratio of magnetomotive force divided by reluctance is known as ____________CurrentFluxVoltageNone of the aboveHintThe ratio of magnetomotive force divided by reluctance is known as flux 5). The induced electromotive force polarity is given by ______________ lawBiot SavartLenz’sAmpere’s circuitalNone of the aboveHintThe induced electromotive force polarity is given by Lenz’s law 6). The coil self-inductance is a measure of ___________________Electromotive forceVoltageElectrical-inertiaNone of the aboveHintThe coil self-inductance is a measure of electrical inertia 7). The path of electrons are unpredictable in _____________ electricityStaticCurrentBoth a and bNone of the aboveHintThe path of electrons are unpredictable in static electricity 8). In which one of the following electricity the duration of flow is short?Static electricityCurrent electricityBoth a and bNone of the aboveHintIn static electricity the duration of flow is short 9). ______________ are the basic components of an electric circuitControl deviceElectric loadConnecting wiresAll of the aboveHintThe control device, electrical load, and connecting wires are the basic components of an electric circuit 10). ______________ are the sources of electric energyGeneratorsCells and batteriesPhotoelectric cellsAll of the aboveHintThe generators, cells, and batteries, photoelectric cells are the sources of electric energy 11). The electric current produce ____________ effect in the conductorsHeatingMagneticChemicalAll of the aboveHintThe electric current produce heating, magnetic, chemical effects in the conductors 12). Which one of the following is not an example for a conductor?MetalGlassEboniteBoth b and cHintThe glass and ebonite are not an example for a conductors 13). ______________ are the parts of the electroscopeGlass jar, brass rod, gold leavesWooden base, insulators plugBrass disc, sealAll of the aboveHintThe glass jar, brass rod, gold leaves, wooden base, insulators plug, brass disc, seal are the parts of the electroscope 14). Which one of the following is not a magnetic material?IronCobaltPaperAll of the aboveHintThe paper is not a magnetic material 15). The electromagnets are categorized into ____________ typesOneTwoThreeFourHintThe electromagnets are categorized into two types they are bar type and horseshoe type 16). The Kirchoff voltage law is applicable to ________________ circuitElectricMagneticBoth a and bNone of the aboveHintThe Kirchoff voltage law applies to electric circuitRead more about Voltage 17). The Kirchoffs magnetomotive force law is applicable to ________________ circuitElectricMagneticBoth a and bNone of the aboveHintKirchoff's magnetomotive force law is applied to the magnetic circuit 18). The existing force in electric circuit is _____________EMFMMFBoth a and bNone of the aboveHintThe existing force in electric circuit is electro motive force 19). The response in magnetic circuits is ___________________CurrentFluxVoltageNone of the aboveHintThe response in magnetic circuits is flux Read more about Flux 20). The ratio of electromotive force divided by resistance is known as ____________CurrentFluxVoltageNone of the aboveHintThe ratio of electromotive force divided by resistance is known as current 21). Which one of the following is a conductor?MetalsGlassEboniteBoth b and cHintThe metal is an example of a conductor 22). Which one of the following is a magnetic material?WoodStainless steelNickelAll of the aboveHintThe nickel is a magnetic material 23). The force due to the magnetic field is _________________ to the fieldPerpendicularParallelCollinearNone of the aboveHintThe force due to the magnetic field is always perpendicular to the field 24). The force due to electric field is __________________PerpendicularParallelCollinearNone of the aboveHintThe force due to the electric field is collinear 25). Which one of the following is velocity independent?Electric forceMagnetic forceBoth a and bNone of the aboveHintThe magnetic force is velocity independentElectromagnetic Induction Important MCQs 26). Which one of the following forces is always non-central?Electric forceMagnetic forceBoth a and bNone of the aboveHintThe magnetic force is always non-central 27). Which one of the following is much stronger?Electrostatic forceGravitational forceBoth a and bNone of the aboveHintThe electrostatic force is much stronger than the gravitational force 28). Which one of the following can be attractive or repulsive?Electrostatic forceGravitational forceBoth a and bNone of the aboveHintThe electrostatic force can be attractive or repulsive 29). The relative strength of the strong nuclear force is ___________OneZeroInfiniteFiniteHintThe relative strength of the strong nuclear force is one 30). The range of an electromagnetic force is _____________OneZeroInfiniteFiniteHintThe range of an electromagnetic force is infinite 31). ______________ are the fundamental forces in natureWeak and strong interactionGravityElectromagnetic forceAll of the aboveHintThe weak and strong interaction, gravity, and electromagnetic force are the fundamental forces in nature 32). In _____________ reactance, the reactance increases the increasing frequencyInductiveCapacitiveBoth a and bNone of the aboveHintIn inductive reactance, the reactance increases the increasing frequency 33). Which one of the following is represented by symbol B?Magnetic fluxMagnetic field strengthMagnetic fieldNone of the aboveHintThe magnetic field is represented by symbol B 34). The S-I unit of the magnetic field is _______________TeslaAmpere/meterWeberNewton/meterHintThe S-I unit of the magnetic field is tesla 35). The S-I equation of magnetic field strength is _______________H=NI/1Cф=BAcW=m/vNone of the aboveHintThe S-I equation of magnetic field strength is H=NI/1C 36). The CGS unit of magnetic field is ___________GaussOerstedMaxwellHenryHintThe CGS unit of magnetic field is gauss 37). The CGS equation of magnetic field is ___________H=NI/1Cф=BAcW=m/vB=H+4πMHintThe CGS equation of magnetic field is B=H+4πM 38). What is the unit of electromotive force?VoltHenryWeberNone of the aboveHintThe unit of electromotive force is volts 39). The induction motors are categorized into ______________OneTwoThreeFourHintThe induction motors are categorized into two types they are single-phase, and three-phase 40). Which one of the following is a single-phase induction motor?Slip ringSquired cageSplit phaseNone of the aboveHintThe split phase is a single-phase induction motor 41). The CGS unit of permeability is ______________Gilberts per maxwellGauss per oerstedWeberNone of the aboveHintThe CGS unit of permeability is gauss per oersted 42). Which one of the following is represented by a symbol σ?Magnetic fluxMagnetic field strengthMass magnetizationNone of the aboveHintThe mass magnetization is represented by a symbol σ 43). What is the SI unit of volume susceptibility?TeslaAmpere per meterNewton per meterDimensionlessHintThe SI unit of volume susceptibility is dimensionless 44). Which one of the following is a three-phase induction motor?Slip ringShaded poleCapacitor startNone of the aboveHintThe slip ring is a three-phase induction motor 45). The single-phase induction motors are categorized into ______________OneTwoThreeFourHintThe single-phase induction motors are categorized into four types they are split-phase, capacitor start, capacitor start capacitor run motor, and shaded pole 46). What are the advantages of induction motors?Low-costEase of operationDurabilityAll of the aboveHintThe advantages of induction motor are low cost, ease of operation, and durability 47). What are the starting methods of induction motor?Direct on-line starterStar delta starterAuto transformer starterAll of the aboveHintThe DOL starter, star delta starter, and autotransformer starter are the starting methods of induction motor 48). The CGS unit of reluctance is ______________Gilberts per maxwellGauss per oerstedWeberNone of the aboveHintThe CGS unit of reluctance is gilberts per maxwell 49). The range of a gravitational force is _____________OneZeroInfiniteFiniteHintThe range of a gravitational force is infinite 50). Which one of the following is represented by symbol H?Magnetic fluxMagnetic field strengthMagnetic fieldNone of the aboveHintThe magnetic field strength is represented by symbol HElectromagnetic Induction MCQs for Quiz 51). The S-I unit of magnetic field strength is _______________TeslaAmpere/meterWeberNewton/meterHintThe S-I unit of magnetic field strength is ampere/meter 52). The S-I equation of magnetic flux is _______________H=NI/1Cф=BAcW=m/vNone of the aboveHintThe S-I equation of magnetic flux is ф=BAc 53). The CGS unit of magnetic field strength is ___________GaussOerstedMaxwellHenryHintThe CGS unit of magnetic field strength is the oersted 54). The motor faults are of ____________ typesOneTwoThreeFourHintThe motor faults are of two types they are electrical and mechanical 55). The three-phase induction motors are categorized into ______________OneTwoThreeFourHintThe three-phase induction motors are categorized into two types they are squirrel cage and slip ring 56). What is the CGS unit of permeability of free space?TeslaAmpere per meterNewton per meterDimensionlessHintThe CGS unit of permeability of free space is dimensionless 57). What is the unit of potential difference?VoltHenryWeberNone of the aboveHintThe unit of potential difference is volts 58). Which one of the following is responsible for a steady current?MMFEMFPotential differenceNone of the aboveHintThe electromotive force is responsible for a steady current 59). The CGS unit of magnetic flux is ___________GaussOerstedMaxwellHenryHintThe CGS unit of magnetic flux is maxwell 60). Which one of the following is represented by symbol M?Magnetic fluxMagnetic field strengthMagnetic fieldMagnetizationHintThe magnetization is represented by symbol M 61). The S-I unit of magnetic flux is _______________TeslaAmpere/meterWeberNewton/meterHintThe S-I unit of magnetic flux is weber 62). The S-I equation of magnetization is _______________H=NI/1Cф=BAcW=m/vNone of the aboveHintThe S-I equation of magnetization is W=m/v 63). Which one of the following is measured by the potential method?MMFEMFPotential differenceNone of the aboveHintThe electromotive force is measured by the potential method 64). ______________ are the electrical motor faultsStator faultsRotor faultsBoth a and bNone of the aboveHintThe stator faults and rotor faults are the electrical motor faults Read more about Stator 65). The CGS unit of magnetic permeability of vacuum is ___________OneZeroInfiniteFiniteHintThe CGS unit of magnetic permeability of vacuum is one 66). ______________ are the mechanical motor faultsBearing faultsEccentricity faultsBoth a and bNone of the aboveHintThe bearing faults and eccentricity faults are the mechanical motor faults 67). What is the SI unit of permeability of free space?Henry per meteremu/gemuNone of the aboveHintThe SI unit of permeability of free space is henry per meter 68). Which one of the following has low starting torque?Single cage IMDouble cage IMBoth a and bNone of the aboveHintThe single cage IM has a low starting torque 69). Which one of the following has a high operating slip?Single cage IMDouble cage IMBoth a and bNone of the aboveHintThe single cage IM has a high operating slip 70). The poles repel in ____________fieldElectricMagneticBoth a and bNone of the aboveHintThe poles repel in the magnetic field 71). How many parts do atoms consist of?OneTwoThreeFourHintThe atom consists of three parts they are electron, neutron, and proton 72). Which one of the following is measured by the voltmeter?MMFEMFPotential differenceNone of the aboveHintThe potential difference is measured by the voltmeter 73). What is the CGS unit of mass magnetization?Henry per meteremu/gemuNone of the aboveHintThe CGS unit of mass magnetization is emu/g 74). The ratio of energy divided by charge is known as ______________Potential differenceResistivityReluctanceNone of the aboveHintThe ratio of energy divided by charge is known as the potential difference 75). Which one of the following is an electromotive force equation?E=V+IrV=-E/QV=-IRNone of the aboveHintThe formula of electromotive force is E=V+IrElectromagnetic Induction MCQs for Exams 76). The S-I unit of magnetization is _______________TeslaAmpere/meterWeberNewton/meterHintThe S-I unit of magnetization is ampere/meter 77). Which one of the following has high operating efficiency?Single cage IMDouble cage IMBoth a and bNone of the aboveHintThe double cage IM has a high operating efficiency 78). The induction motors are used in _________________ applicationsCommercialResidentialIndustrialAll of the aboveHintThe induction motors are used in commercial, residential, and industrial applications 79). _____________ are the basic parts f AC motorEnclosureRotorStatorAll of the aboveHintThe stator, rotor, enclosure are the basic parts of the AC motor 80). The squirrel cage type induction motors are ________________SimpleRobustLow costAll of the aboveHintThe squirrel cage type induction motors are simple, robust, and low cost 81). The wound rotor type induction motors are _____________More expensiveEasy to control the speedBoth a and bNone of the aboveHintThe wound rotor type induction motors are more expensive and easy to control the speed 82). The stator consists of _______________ componentsFrameWindingBoth a and bNone of the aboveHintThe stator consists of frame and winding components 83). The squirrel cage IM are ___________Simple in constructionCheap and reliableBoth a and bNone of the aboveHintThe squirrel cage IM is simple in construction, cheap, and reliable 84). ____________ are the type of stators used in IMD.O.LStar deltaAutotransformer starterAll of the aboveHintThe D.O.L, star-delta, and autotransformer starter is the type of stators used in IM 85). What one of the following is represented by a symbol Ɛ?Magnetic fluxMagnetic momentElectromotive forceNone of the aboveHintThe electromotive force is represented by a symbol Ɛ 86). _________ are the speed control methodsPole changing, rotor resistance controlStator voltage control, supply frequency controlSlip energy recoveryAll of the aboveHintThe pole changing, rotor resistance control, stator voltage control, supply frequency control, slip energy recovery is the speed control methods 87). _____________ are the type of losses in an IMFixed lossesVariable lossesBoth a and bNone of the aboveHintThe fixed losses and variable losses are the types of losses in an IM 88). The fixed losses are composed of ______________ lossWindage lossCore lossBearing friction lossAll of the aboveHintThe fixed losses are composed of windage loss, core loss, and bearing friction loss 89). What is the CGS unit of the magnetic moment?Henry per meteremu/gemuNone of the aboveHintThe CGS unit of the magnetic moment is emu 90). What one of the following is represented by a symbol V?Magnetic fluxMagnetic momentPotential differenceNone of the aboveHintThe potential difference is represented by a symbol V 91). The variable losses are composed of ______________Rotor ohmic lossStator ohmic lossStray load lossAll of the aboveHintThe variable losses are composed of rotor ohmic loss, stator ohmic loss, and stray load loss 92). The S-I equation of voltage or EMF is _______________H=NI/1Cф=BAcW=m/vV=-Ndф/dtHintThe S-I equation of voltage or EMF is V=-Ndф/dt 93). The field strength is ____________ in electrostaticVolts per meterAmperes per meterMeter per secondNone of the aboveHintThe field strength in electrostatic is volts per meter 94). The field strength is ____________ in magnetostaticVolts per meterAmperes per meterMeter per secondNone of the aboveHintThe field strength in magnetostatic is amperes per meter 95). The opposite charges attracts in ___________ fieldElectricMagneticBoth a and bNone of the aboveHintThe opposite charges attracts in an electric field 96). The charges repel in _____________ fieldElectricMagneticBoth a and bNone of the aboveHintThe charges repel in an electric field 97). The S-I unit of magnetic permeability of vacuum is _______________TeslaAmpere/meterWeberNewton/meter^2HintThe S-I unit of magnetic permeability of vacuum is newton/meter^2 98). In the newton law of gravitation the force is _____________AttractiveRepulsiveBoth a and bNone of the aboveHintIn the newton law of gravitation the force is always attractive 99). The opposite poles attracts in ___________ fieldElectricMagneticBoth a and bNone of the aboveHintThe opposite poles attract a magnetic field 100). In coulombs law of charge, the force is _____________AttractiveRepulsiveCan be attractive or repulsiveNone of the aboveHintIn coulombs law of charge, the force is can be attractive or repulsive Time is Up! Time's up
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