Hysteresis Motor Question & Answers July 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 Hint 2). A synchronous based motor operates on _____ input supply? AC DC Zero Both b and c Hint 3). Which of the following parts of synchronous motor are sync with AC frequency parameter? Rotor Shaft Stator Both a and b Hint 4). Which of the following speed of sync motor are equal? Rotor = Motor Rotor = Shaft Shaft = Motor Stator = Rotor Hint 5). Which of the following are the units of speed? RPM Hertz Meters Farads Hint 6). A hysteresis based motor is designed with ___ type of magnetic substance? Para Ferro Dia Both b and c Hint 7). Which of the following are the examples of ferromagnetic substance? Cobalt Gadolinium Iron All the above Hint 8). 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 Hint 9). Which of the following are the properties of magnetism? Magnetic susceptibility Relative permeability Magnetic flux density All the above Hint 10). Which of the following is the formula for magnetic susceptibility? M/H H/M 1+M 1+H Hint 11). Which of the following are the components of hysteresis motor? Stator Rotor Shaft All the above Hint 12). How many windings does a hysteresis motor comprises of? Main Auxiliary Secondary All the above Hint 13). Which of the following are the important components of Hysteresis motor? Rotor Stator Shaft Both a and b Hint Read more about Rotor Types 14). Which type of phase supply is provided to stator? Single Three Four Both a and b Hint Read more about stator 15). A rotor is made up of _____ material? Magnetic Electric Electromagnetic Both b and c Hint 16). A rotor substance has ______ losses in higher percentage? Hysteresis Eddy Iron Both a and c Hint Read more about Hysteresis losses 17). A hysteresis based motor connects with _____ type of motor? Shaded poles Non shaded poles Shaft Both a and b Hint 18). Hysteresis losses are ____ proportional to hysteresis loop? Directly Indirectly Equal Both a and c Hint 19). Which of the following are the materials used in rotor of hysteresis motor? Chrome Cobalt Alloy All the above Hint 20). Which of the following component does a rotor component of hysteresis motor do not carry? Winding Teeth Shaft Both a and b Hint 21). Over which of the following component a magnetic cylinder based portion of rotor is placed over? Shaft Stator Brush Both b and c Hint 22). Which of the substance is used while mounting magnetic cylinder of rotor over shaft? Non-magnetic substance Magnetic substance Liquid Glass Hint 23). Which of the following losses are minimized when rotor resistance is maximum? Eddy current Hysteresis Magnetic Iron Hint 24). A hysteresis loop is also called as? Hysteresis curve Hysteresis point Hysteresis spike Both a and c Hint 25). A motor is a ___ type of device? Electric Mechanic Chemical Magnetic Hint Hysteresis Motor MCQ for Quiz 26). In which form is the input is provided to an electric motor? Current Voltage Resistance Both a and b Hint 27). The output from a motor is in ___ form? Mechanical Electrical Magnetic Chemical Hint 28). Which of the following are the classification of a electric based motor? DC AC ADC Both a and b Hint Read more about electric motor types 29). Which of the following are the class of DC motors? Brushless Brushed Asynchronous Both a and b Hint 30). Which of the following are the class of AC motors? Brushless Synchronous Asynchronous Both b and c Hint 31). Which of the following is the classification of synchronous based electric motors? Non-excited Direct current excited Induction Both a and b Hint Read more about Asynchronous motor 32). Which of the following is the classification of Non-excited based motor? Reluctance Hysteresis Resistive Both a and b Hint 33). In which of the following environment does a hysteresis based motor is deployed? Noiseless environment Noise environment Large area environment All the above Hint 34). Which of the following are the applications of hysteresis based motor? Electric clocks Tape records Record players All the above Hint 35). On which principle does a hysteresis based motor operates? Magnetism Demagnetise Both a and b Both a and b Hint 36). 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 Hint 37). Which of the following is the reason for torque generation in hysteresis based motor? Hysteresis Eddy current Potential difference Both a and b Hint 38). Which of the following are the types of hysteresis based motor? Disk Cylindrical Axial All the above Hint 39). Which of the following are the types of single phase type motor? Shaded pole based Permanent based Non-permanent Both a and b Hint 40). Which of the following are the advantages of shaded pole based hysteresis motor? Minimum area Minimum cost Uniform torque Both a and b Hint 41). Which of the following are the disadvantages of shaded pole based hysteresis motor? Minimum area Noisy Non-uniform torque Both b and c Hint 42).Which of the following is the center part of hysteresis based rotor? Shaft Non-magnetic material Special magnetic hysteresis ring Screw Hint 43). Which of the following substance is used while designing rotor of a hysteresis motor? Steel Cobalt Chrome All the above Hint 44). Which of the following is advantage of a non-magnetic substance? Rotor is lightened Motor speed is increased Inertia is reduced All the above Hint 45). A hysteresis based motor operates similar to? Synchronous motor Asynchronous motor Linear motor Both a and c Hint 46). Eddy current is _____ when synchronization occurs in a hysteresis motor during starting condition? 0 Uniform Infinite Unity Hint 47). 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) Hint 48). Which of the following field is generated when AC supply is input to this motor? Electric Magnetic Both a and b Zero Hint 49). Magnetic field in this motor is applied to ____ during starting condition? Main windings Auxiliary windings Secondary windings Both a and b Hint 50). At the initial stages ______ ignites this motor? Eddy current torque Hysteresis torque Iron torque Both a and b Hint Hysteresis Motor Questions for Interviews 51). Which is the final stage ______ of this motor after starting? Eddy current torque Hysteresis torque Iron torque Both a and b Hint 52). Which of the following are the hysteresis motor working conditions? Starting Steady state running Linear running Both a and b Hint 53). During which condition of this motor the stator deploys poles on rotor? Starting Steady Intermediate All the above Hint 54). A steady based state hysteresis motor occurs in _____ condition of motor? Synchronous Asynchronous Non-linear Both b and c Hint 55). 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 Hint 56). Which of the following is the angle notation between stator and rotor based magnetic fields? µ α Ø π Hint 57). ____ is observed between rotor and stator during steady state of a active hysteresis motor? Attraction Repulsion Tangential Both a and b Hint 58). 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 Hint 59). Which of the following are the units of torque? Newton-Meter Newton-Square Newton Meters Hint 60). Hysteresis based torque is _____ with respect to rotor speed? Dependent Independent Linear Both a and c Hint 61). 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 Hint 62). Eddy current is also called? Foucault current Fault current Error current Both b and c Hint 63). Eddy current is generated due to? Magnetic fields Closed rings movement Electric fields Both a and b Hint 64). Eddy current are ____ position with respect to magnetic field when active? Vertical Horizontal Nominal Distinct Hint 65). ____ is responsible for motors operation in synchronous/normal speed? High retentivity Low retentivity Equal retentivity Zero retentivity Hint 66). Which of the following curve defines the efficiency of Hysteresis motor? B-H B-V H-V C-V Hint 67). Which of the following is the units of magnetic field? Amperes per meter Amperes square Oersted Both a and c Hint 68). Magnetic field based strength is also named as? Magnetic field intensity Magnetic field Magnetic intensity Both b and c Hint 69). 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 Hint 70). Which of the following are the application of eddy current? Trains for eddy current brakes PMMC devices Metal sections All the above Hint 71). Which of the following are the advantages of eddy current? Analysis process Precise based results Has coating surface All the above Hint 72). 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 Hint 73). 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 Hint 74). A resistance to change in flow of current is called? Self-inductance Self-conductance Self-resistance Self-impedance Hint 75). 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 Hint Hysteresis Motor MCQ for Exams 76). Which of the following is the equation for magnetic flux change? Webers/second Webers Seconds/webers Webers/meters Hint 77). Which of the following factors affects self-induction of coil? Coil length Coil material Coil turns All the above Hint 78). Which of the following are the application of self inductance? Sensors Tuning circuits Filters All the above Hint 79). Which of the following is the formula for inductance of a coil? L=(Npi)/I L=(Npi)I L=-(Npi)/I Hint 80). A induction motor comprises of _______ winding? Amortisseur Mono Dia Tri Hint 81). A induction motor operates on ____ number of phases? 1 2 3 Multiple Hint 82). Which of the following are the most common areas of applications of induction motor? Industrial Commercial Residential All the above Hint 83). Which of the following are the advantages of hysteresis based motors? Zero mechanical vibrations Zero noise Enhances inertia loads All the above Hint 84). Which of the following is the disadvantages of hysteresis based motors? Minimum size Low torque Minimum out put obtained All the above Hint 85). Which of the following are the mostly used AC motors? Hysteresis motor Induction motor Non-induction motor Both a and b Hint 86). A schrage based motor is ____ based commutator motor.? Poly Tria Dia Both b and c Hint 87). A schrage based motor characteristics is ____? Shunted Series Closed Both b and c Hint 88). A synchronous based reluctance motor is provided with _____ form of input energy? Electrical Mechanical Chemical Both b and c Hint 89). A synchronous based reluctance motor provides _____ form of output energy? Electrical Mechanical Chemical Both b and c Hint 90). A motor is ____ type of device? Electrical Mechanical Chemical Kinetic Hint 91). Which of the following is the input energy to an motor? Electrical Mechanical Chemical Kinetic Hint 92). Characteristics of a hysteresis based motor is explained via? BH curve Torque-Speed Current -Voltage Both a and b Hint 93). Losses of a hysteresis based motor is explained via? BH curve Torque-Speed Current -Voltage Both a and b Hint 94). In a torque-speed characteristics X-axis is? Speed Torque 1/speed 1/ Torque Hint 95). In a torque-speed characteristics Y-axis is? Speed Torque 1/speed 1/ Torque Hint 96). In BH curve, X-axis is? H B 1/B 1/H Hint 97). In BH curve, Y-axis is? H B 1/B 1/H Hint 98). Which of the following is the CGS unit of B? Gaussian Tesla Weber Both a and c Hint 99). Which of the following is the SI unit of magnetic flux density? Gaussian Tesla Weber Both a and c Hint 100). Which of the following is units of power factor? kW Kgs W/K Watts Hint For More MCQs Slip Ring Motor MCQs Three Phase Induction Motor MCQs Switched Reluctance Motor MCQs Reluctance Motor MCQs Induction Motor MCQs Repulsion Motor MCQs Time's up
