Hysteresis Motor Question & AnswersJuly 19, 2023 By Wat Electrical This article lists 100 Hysteresis motor MCQs for engineering students. All the Hysteresis motor Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Hysteresis motor.A hysteresis based motor is synchronous type of motor, which operates with AC input supply. It works on hysteresis losses based principle with either single or three phase. The components of hysteresis motor includes rotor, shading coil, 1-phase stator winding, stator, and shaft. There are 2 types of windings namely main, and auxiliary also called secondary winding. The rotor speed of sync motor is equal to motor speed. A stator operates with either single/three phase. The types of hysteresis based motor includes disk, axial, circumferential field, and cylindrical based type hysteresis motor.The advantages of hysteresis based motors includes zero mechanical vibrations, zero noise and enhances inertia loads. The disadvantages of hysteresis based motors includes minimum size, low torque and minimum output obtained.The applications of hysteresis based motor includes electric clocks, record players and timing based devices. 1). A hysteresis based motor is ___ type of motor? Synchronous Asynchronous Non-linear Both b and c None Hint2). A synchronous based motor operates on _____ input supply? AC DC Zero Both b and c None Hint3). Which of the following parts of synchronous motor are sync with AC frequency parameter? Rotor Shaft Stator Both a and b None Hint4). Which of the following speed of sync motor are equal? Rotor = Motor Rotor = Shaft Shaft = Motor Stator = Rotor None Hint5). Which of the following are the units of speed? RPM Hertz Meters Farads None Hint6). A hysteresis based motor is designed with ___ type of magnetic substance? Para Ferro Dia Both b and c None Hint7). Which of the following are the examples of ferromagnetic substance? Cobalt Gadolinium Iron All the above None Hint8). Which of the following are the properties of Ferro magnetic substances? Does not present in liquids Present in gases Strong magnetism Both a and c None Hint9). Which of the following are the properties of magnetism? Magnetic susceptibility Relative permeability Magnetic flux density All the above None Hint10). Which of the following is the formula for magnetic susceptibility? M/H H/M 1+M 1+H None Hint11). Which of the following are the components of hysteresis motor? Stator Rotor Shaft All the above None Hint12). How many windings does a hysteresis motor comprises of? Main Auxiliary Secondary All the above None Hint13). Which of the following are the important components of Hysteresis motor? Rotor Stator Shaft Both a and b None HintRead more about Rotor Types14). Which type of phase supply is provided to stator? Single Three Four Both a and b None HintRead more about stator15). A rotor is made up of _____ material? Magnetic Electric Electromagnetic Both b and c None Hint16). A rotor substance has ______ losses in higher percentage? Hysteresis Eddy Iron Both a and c None HintRead more about Hysteresis losses 17). A hysteresis based motor connects with _____ type of motor? Shaded poles Non shaded poles Shaft Both a and b None Hint18). Hysteresis losses are ____ proportional to hysteresis loop? Directly Indirectly Equal Both a and c None Hint19). Which of the following are the materials used in rotor of hysteresis motor? Chrome Cobalt Alloy All the above None Hint20). Which of the following component does a rotor component of hysteresis motor do not carry? Winding Teeth Shaft Both a and b None Hint21). Over which of the following component a magnetic cylinder based portion of rotor is placed over? Shaft Stator Brush Both b and c None Hint22). Which of the substance is used while mounting magnetic cylinder of rotor over shaft? Non-magnetic substance Magnetic substance Liquid Glass None Hint23). Which of the following losses are minimized when rotor resistance is maximum? Eddy current Hysteresis Magnetic Iron None Hint24). A hysteresis loop is also called as? Hysteresis curve Hysteresis point Hysteresis spike Both a and c None Hint25). A motor is a ___ type of device? Electric Mechanic Chemical Magnetic None HintHysteresis Motor MCQ for Quiz 26). In which form is the input is provided to an electric motor? Current Voltage Resistance Both a and b None Hint27). The output from a motor is in ___ form? Mechanical Electrical Magnetic Chemical None Hint28). Which of the following are the classification of a electric based motor? DC AC ADC Both a and b None HintRead more about electric motor types29). Which of the following are the class of DC motors? Brushless Brushed Asynchronous Both a and b None Hint30). Which of the following are the class of AC motors? Brushless Synchronous Asynchronous Both b and c None Hint31). Which of the following is the classification of synchronous based electric motors? Non-excited Direct current excited Induction Both a and b None HintRead more about Asynchronous motor32). Which of the following is the classification of Non-excited based motor? Reluctance Hysteresis Resistive Both a and b None Hint33). In which of the following environment does a hysteresis based motor is deployed? Noiseless environment Noise environment Large area environment All the above None Hint34). Which of the following are the applications of hysteresis based motor? Electric clocks Tape records Record players All the above None Hint35). On which principle does a hysteresis based motor operates? Magnetism Demagnetise Both a and b Both a and b None Hint36). In hysteresis based motor the magnetism and de-magnetism property depends on? Direction of current flow b) Potential difference Potential difference Substances connected All the above None Hint37). Which of the following is the reason for torque generation in hysteresis based motor? Hysteresis Eddy current Potential difference Both a and b None Hint38). Which of the following are the types of hysteresis based motor? Disk Cylindrical Axial All the above None Hint39). Which of the following are the types of single phase type motor? Shaded pole based Permanent based Non-permanent Both a and b None Hint40). Which of the following are the advantages of shaded pole based hysteresis motor? Minimum area Minimum cost Uniform torque Both a and b None Hint41). Which of the following are the disadvantages of shaded pole based hysteresis motor? Minimum area Noisy Non-uniform torque Both b and c None Hint42).Which of the following is the center part of hysteresis based rotor? Shaft Non-magnetic material Special magnetic hysteresis ring Screw None Hint43). Which of the following substance is used while designing rotor of a hysteresis motor? Steel Cobalt Chrome All the above None Hint44). Which of the following is advantage of a non-magnetic substance? Rotor is lightened Motor speed is increased Inertia is reduced All the above None Hint45). A hysteresis based motor operates similar to? Synchronous motor Asynchronous motor Linear motor Both a and c None Hint46). Eddy current is _____ when synchronization occurs in a hysteresis motor during starting condition? 0 Uniform Infinite Unity None Hint47). Which of the following is the equation of eddy current in Hysteresis motor? Pe=kef2(2) B(2) Pe=-kef2(2) B(2) Pe=1/kef2(2) B(2) Pe=kef2(2)-B(2) None Hint48). Which of the following field is generated when AC supply is input to this motor? Electric Magnetic Both a and b Zero None Hint49). Magnetic field in this motor is applied to ____ during starting condition? Main windings Auxiliary windings Secondary windings Both a and b None Hint50). At the initial stages ______ ignites this motor? Eddy current torque Hysteresis torque Iron torque Both a and b None HintHysteresis Motor Questions for Interviews51). Which is the final stage ______ of this motor after starting? Eddy current torque Hysteresis torque Iron torque Both a and b None Hint52). Which of the following are the hysteresis motor working conditions? Starting Steady state running Linear running Both a and b None Hint53). During which condition of this motor the stator deploys poles on rotor? Starting Steady Intermediate All the above None Hint54). A steady based state hysteresis motor occurs in _____ condition of motor? Synchronous Asynchronous Non-linear Both b and c None Hint55). On induce of poles on rotor in this motor during steady state, the flux of rotor ____ with respect to flux of stator? Lags Leads Zero Both b and c None Hint56). Which of the following is the angle notation between stator and rotor based magnetic fields? µ α Ø π None Hint57). ____ is observed between rotor and stator during steady state of a active hysteresis motor? Attraction Repulsion Tangential Both a and b None Hint58). Attraction of rotor and stator during steady state of a active hysteresis motor is called? Hysteresis torque Hysteresis pull Hysteresis drag Both a and c None Hint59). Which of the following are the units of torque? Newton-Meter Newton-Square Newton Meters None Hint60). Hysteresis based torque is _____ with respect to rotor speed? Dependent Independent Linear Both a and c None Hint61). Which of the following are linear parameters with respect to hysteresis torque? Residual magnetism = Hysteresis Minimum magnetism = Hysteresis Maximum magnetism = Hysteresis Both b and c None Hint62). Eddy current is also called? Foucault current Fault current Error current Both b and c None Hint63). Eddy current is generated due to? Magnetic fields Closed rings movement Electric fields Both a and b None Hint64). Eddy current are ____ position with respect to magnetic field when active? Vertical Horizontal Nominal Distinct None Hint65). ____ is responsible for motors operation in synchronous/normal speed? High retentivity Low retentivity Equal retentivity Zero retentivity None Hint66). Which of the following curve defines the efficiency of Hysteresis motor? B-H B-V H-V C-V None Hint67). Which of the following is the units of magnetic field? Amperes per meter Amperes square Oersted Both a and c None Hint68). Magnetic field based strength is also named as? Magnetic field intensity Magnetic field Magnetic intensity Both b and c None Hint69). Which of the following is the equation for hysteresis based power loss? Ph = kh * f2*B1.6 Ph=kh*sf1*B1.6 Ph=kh*sf1*B1.3 Both a and b None Hint70). Which of the following are the application of eddy current? Trains for eddy current brakes PMMC devices Metal sections All the above None Hint71). Which of the following are the advantages of eddy current? Analysis process Precise based results Has coating surface All the above None Hint72). Which of the following are the disadvantages of eddy current? Magnetic flux leakage Loss of heat is more Loss of electric energy All the above None Hint73). Which of the following is the equation of eddy current loss? ke*f2*Bm2*t2 1/ ke*f2*Bm2*r2 -1/ ke*f2*Bm2*r2 ke/f2*Bm2*r2 None Hint74). A resistance to change in flow of current is called? Self-inductance Self-conductance Self-resistance Self-impedance None Hint75). Which of the following is the equation of self inductance? VL=-Nd (pi)/ dt VL=Nd (pi)/ dt VL=1/Nd (pi) dt VL=-Nd /(pi) dt None HintHysteresis Motor MCQ for Exams76). Which of the following is the equation for magnetic flux change? Webers/second Webers Seconds/webers Webers/meters None Hint77). Which of the following factors affects self-induction of coil? Coil length Coil material Coil turns All the above None Hint78). Which of the following are the application of self inductance? Sensors Tuning circuits Filters All the above None Hint79). Which of the following is the formula for inductance of a coil? L=(Npi)/I L=(Npi)I L=-(Npi)/I None Hint80). A induction motor comprises of _______ winding? Amortisseur Mono Dia Tri None Hint81). A induction motor operates on ____ number of phases? 1 2 3 Multiple None Hint82). Which of the following are the most common areas of applications of induction motor? Industrial Commercial Residential All the above None Hint83). Which of the following are the advantages of hysteresis based motors? Zero mechanical vibrations Zero noise Enhances inertia loads All the above None Hint84). Which of the following is the disadvantages of hysteresis based motors? Minimum size Low torque Minimum out put obtained All the above None Hint85). Which of the following are the mostly used AC motors? Hysteresis motor Induction motor Non-induction motor Both a and b None Hint86). A schrage based motor is ____ based commutator motor.? Poly Tria Dia Both b and c None Hint87). A schrage based motor characteristics is ____? Shunted Series Closed Both b and c None Hint88). A synchronous based reluctance motor is provided with _____ form of input energy? Electrical Mechanical Chemical Both b and c None Hint89). A synchronous based reluctance motor provides _____ form of output energy? Electrical Mechanical Chemical Both b and c None Hint90). A motor is ____ type of device? Electrical Mechanical Chemical Kinetic None Hint91). Which of the following is the input energy to an motor? Electrical Mechanical Chemical Kinetic None Hint92). Characteristics of a hysteresis based motor is explained via? BH curve Torque-Speed Current -Voltage Both a and b None Hint93). Losses of a hysteresis based motor is explained via? BH curve Torque-Speed Current -Voltage Both a and b None Hint94). In a torque-speed characteristics X-axis is? Speed Torque 1/speed 1/ Torque None Hint95). In a torque-speed characteristics Y-axis is? Speed Torque 1/speed 1/ Torque None Hint96). In BH curve, X-axis is? H B 1/B 1/H None Hint97). In BH curve, Y-axis is? H B 1/B 1/H None Hint98). Which of the following is the CGS unit of B? Gaussian Tesla Weber Both a and c None Hint99). Which of the following is the SI unit of magnetic flux density? Gaussian Tesla Weber Both a and c None Hint100). Which of the following is units of power factor? kW Kgs W/K Watts None HintFor More MCQsSlip Ring Motor MCQsThree Phase Induction Motor MCQsSwitched Reluctance Motor MCQsReluctance Motor MCQsInduction Motor MCQsRepulsion Motor MCQs Time's up
