Reluctance Motor Question & Answers January 27, 2023 By Wat Electrical This article lists 100 Reluctance Motor MCQs for engineering students. All the Reluctance 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 Reluctance Motor. The reluctance motor is a type of motor that depends on reluctance torque for its operation and it is a type of synchronous machine. The switched reluctance motor, variable reluctance motor, and synchronous reluctance motor are the type of reluctance motors. The linear SRM and rotary SRM are the types of switched reluctance motors. The construction of switched reluctance motor is simple and starting torque is quite good. The switched reluctance motor has no windings or slip rings in the rotor and it can run at very high speed that is up to 30,000 rpm in hazardous atmospheres. The four-quadrant operation is possible in switched reluctance motors with appropriate drive circuits. The advantages of switched reluctance motor are they are cost-effective, easy to maintain, has higher efficiency, have accurate speed control is possible, and has more power per unit weight and volume. The brushes, permanent magnets, and commentators are absent in switched reluctance motors. The microcontroller-based operation control circuits, washing machines, weaving machinery, centrifugal pump, compressors, etc are the applications of the switched reluctance motors. The combined reluctance and magnet alignment torque, field weakening capability, high inductance, high-speed capability, and high-temperature capability are the properties of a synchronous reluctance motor. 1). What is the standard form of SRM? Single Reluctance Motor Synchronous Reluctance Motor Switched Reluctance Motor None of the above Hint 2). What are the advantages of synchronous reluctance motor? Cheaper Higher efficiency Robust All of the above Hint 3). Which one of the following is an application of synchronous reluctance motor? Pumps or conveyers Nuclear reactors Both a and b None of the above Hint 4). Which one of the following is disadvantage of switched reluctance motor? Noisy in the operation Has no windings Four quadrant operation is possible None of the above Hint 5). What is the standard form of PSC? Phase Split Capacitor Permanent Split Capacitor None of the above Hint 6). Which one of the following is a useful property of synchronous reluctance motor? High inductance High speed capability High temperature capability All of the above Hint 7). Which one of the following is a type of control method used to control SRM? Hysteresis Voltage PWM Both a and b None of the above Hint 8). Which one of the following mainly applied in computer-controlled systems ad robotics? Switched reluctance motor Variable reluctance motor Both a and b None of the above Hint 9). The figure shown below is a construction of __________________ motor? Induction Reluctance Brushless None of the above Hint 10). In which one of the following motor, the direct excitation voltage is required? Synchronous motor Induction motor Step motor All of the above Hint 11). Which one of the following is an application of switched reluctance motor? Washing machine Compressors Weaving machinery All of the above Hint 12). Which one of the following mainly used in domestic applications? Switched reluctance motor Variable reluctance motor Both a and b None of the above Hint 13). What are the advantages of variable reluctance stepper motor? Rotor has no windings No detent torques Both a and b None of the above Hint 14). In which one of the following three phases ON at the same time? PMSM BLDCM Both a and b None of the above Hint 15). In which one of the following the power electronics converter is necessary? Cage induction motor SRM Both a and b None of the above Hint 16). In which one of the following, the rotor is magnetised? Permanent magnet stepper motor Variable reluctance stepper motor Both a and b None of the above Hint 18). What is the standard form of FOC? Field Oriented Control Frequency Oriented Control Field Oriented Commutator None of the above Hint 19). The figure shown below is a __________________ path of SRM? Long flux path SRM Short flux path SRM Both a and b None of the above Hint 20). What is the standard form of LSRM? Line Single Reluctance Motor Linear Synchronous Reluctance Motor Linear Switched Reluctance Motor None of the above Hint 21). What is the standard form of ECM? Electronically Compiled Motors Electronically Control Motors Electronically Commutated Motors None of the above Hint 22). Which one of the following doesn’t require rotor position sensor? Switched reluctance motor Variable reluctance motor Both a and b None of the above Hint 23). In which one of the following, the half step operation is possible? Switched reluctance motor Variable reluctance motor Both a and b None of the above Hint 24). In which one of the following, only two phases ON at the same time? PMSM BLDCM Both a and b None of the above Hint 25). In which one of the following, the motor design complexity is low? Brushless DC motor Switched reluctance motor Brushless DC motor Both a and b None of the above Hint Reluctance Motor MCQ for Quiz 26). The advanced direct instantaneous torque control comes under __________________? Indirect torque control Direct torque control Field oriented control None of the above Hint 27). What is the standard form of TWSRM? Toroidal Winding SRM Triangular Winding SRM Trapezoidal Winding SRM None of the above Hint 28). What is the standard form of RFSRM? Radial Flux Single Regular Motor Radial Flux Switched Reluctance Motor Radial Flux Simple Reluctance Motor None of the above Hint 29). The torque sharing function comes under __________________? Indirect torque control Direct torque control Field oriented control None of the above Hint 30). Which one of the following have better efficiency? Synchronous motor Induction motor Both a and b None of the above Hint 31). What is the standard form of VFD? Variable Frequency Device Variable Field Drive Variable Frequency Drive None of the above Hint 32). Which one of the following located in rotor? Mechanical commutator Electronic commutator Both a and b None of the above Hint 33). What are the disadvantages of variable reluctance stepper motor? Simple and low cost Fast dynamic response Normally available in 3.6 to 30 degrees None of the above Hint 34). In which one of the following, there will be no ripple at the commutation? PMSM BLDCM Both a and b None of the above Hint 35). In which one of the following, the manufacturing process cost is low? Brushless DC motor Switched reluctance motor Both a and b None of the above Hint 36). What is the standard form of ALA? Axially Laminated Rotor Axially Line Rotor Axially Linear Rotor None of the above Hint 37). The figure shown below is a _________________ control block diagram of SRM? Speed Temperature Current None of the above Hint 38). The C-dump with freewheeling comes under _________________ converter configuration for q phase SRM? (q+1) switch Two stage power converters 2q switch None of the above Hint 39). What is the standard form of RFSRM? Radial Flux Single Regular Motor Radial Flux Switched Reluctance Motor Radial Flux Simple Reluctance Motor None of the above Hint 40). Which one of the following motor costs is high? Synchronous reluctance motor Induction motor Both a and b None of the above Hint 41). Which one of the following motor drives fed with sinusoidal current? PMSM BLDCM Both a and b None of the above Hint 42). In which one of the following the torque ripple and noise is high? Brushless DC motor Switched reluctance motor Both a and b None of the above Hint 43). What is the standard form of TLA? Transversally Laminated Rotor Transversally Line Rotor Transversally Linear Rotor None of the above Hint 44). In which one of the following PMAC the stator induced voltage has trapezoidal waveform? Sinusoidally excited Trapezoid ally excited Both a and b None of the above Hint 45). In which one of the following motor the lamination is radial? Radial airgap motors Axial airgap motors Both a and b None of the above Hint 46). What is the standard form of AFSRM? Axial Flux Single Regular Motor Axial Flux Switched Reluctance Motor Axial Flux Simple Reluctance Motor None of the above Hint 47). In which one of the following, the core losses are high? PMSM BLDCM Both a and b None of the above Hint 48). What are the advantages of permanent magnet stepper motor? Slower acceleration Motor has high inertia High detent torque None of the above Hint 49). The figure shown below is a __________________ path of SRM? Long flux path SRM Short flux path SRM Both a and b None of the above Hint 50). The reluctance motors are categorized into ___________________ types? Two Three Six Seven Hint Reluctance Motor MCQ for Students 51). In which one of the following, the power capability is high? Brushless DC motor Switched reluctance motor Both a and b None of the above Hint 52). What is the standard form of PMaSynRM? Permanent Magnet Assisted Asynchronous Reluctance Machine Permanent Magnet Assisted Synchronous Reluctance Machine Permanent Manual Assisted Synchronous Reluctance Machine None of the above Hint 53). In which one of the following PMAC the stator induced voltage has sinusoidal waveform? Sinusoidally excited Trapezoid ally excited Both a and b None of the above Hint 54). In which one of the following motor the lamination is axial? Radial airgap motors Axial airgap motors Both a and b None of the above Hint 55). Which one of the following motors used for low-speed applications? Radial airgap motors Axial airgap motors Both a and b None of the above Hint 56). What is the standard form of MT-SRM? Multi-tooth Switched Reluctance Motor Multi-tooth Switched Reactance Motor Multi-tooth Switched Reluctance Machine None of the above Hint 57). In which one of the following the switching losses are less? PMSM BLDCM Both a and b None of the above Hint 58). What are the disadvantages of permanent magnet stepper motor? Slower acceleration Motor has high inertia Both a and b None of the above Hint 59). The figure shown below is a configuration of _____________________ motor? Long flux path SRM Short flux path SRM Transverse flux configuration of LSRM None of the above Hint 60). Which one of the following doesn’t have detent torque? Variable reluctance stepper motor Permanent magnet stepper motor Both a and b None of the above Hint 61). The maximum stepping rate is up to 1200 per second in ____________________ motor? VR motor PM motor Both a and b None of the above Hint 62). In which one of the following, the torque to inertia ratio is large? PM motor VR motor Both a and b None of the above Hint 63). In which one of the following, the manufacturing process time is low? Brushless DC motor Switched reluctance motor Both a and b None of the above Hint 64). What is the standard form of TLASynRM? Transversally Laminated Rotor Asynchronous Reluctance Machine Transversally Laminated Rotor Synchronous Reluctance Machine Transversally Linear Rotor Synchronous Reluctance Machine None of the above Hint 65). In which one of the following PMAC, the stator has concentrated winding? Sinusoidally excited Trapezoid ally excited Both a and b None of the above Hint 66). What is the standard form of DS-DR SRM? Dual Stator-Dual Reactance SRM Dual Stator-Dual Reluctance SRM Dual Stator-Dual Rotor SRM None of the above Hint 67). Which one of the following motor drive works with low cost distributed winding? PMSM BLDCM Both a and b None of the above Hint 68). The figure shown below is a _________________ control block diagram of SRM? Speed Temperature Current None of the above Hint 69). The figure shown below is a configuration of _____________________ motor? Long flux path SRM Short flux path SRM Transverse flux configuration of LSRM Longitudinal flux configuration of LSRM Hint 70). What is the standard form of MSSRM-SR? Multi-stack Converter SRM with a Segmental Rotor Multi-stack Conventional SRM with a Segmental Rotor Multi-stack Computational SRM with a Segmental Rotor None of the above Hint 71). In which one of the following, the very small step angle is possible? Variable reluctance stepper motor Permanent magnet stepper motor Both a and b None of the above Hint 72). The maximum shear stress is _________________ in SRM? Up to 20,000 Over 60,000 Up to 35,000 None of the above Hint 73). In which one of the following motor the torque ripple is less than 7%? Cage induction motor PM brushless motor SRM None of the above Hint 74). How many numbers of phases are there in a R-dump converter? Two Three Six Four Hint 75). In which one of the following the manufacturing process complexity is low? Brushless DC motor Switched reluctance motor Both a and b None of the above Hint Reluctance Motor MCQ for Exams 76). What is the standard form of MMF? Magneto Force Magneto Motive Force Magneto Material Force None of the above Hint 77). Which one of the following is related to magnetic field? Permittivity Permeability Both a and b None of the above Hint 78). In which one of the following motor, the torque ripple is over 20%? Cage induction motor PM brushless motor SRM None of the above Hint 79). The figure shown below is a configuration of _____________________ motor? Axial configuration of SRM Axial configuration of LSRM Transverse flux configuration of LSRM Longitudinal flux configuration of LSRM Hint 80). What is the standard form of MSCSRM? Multi-stack Converter Switched Reluctance Motors Multi-stack Conventional Switched Reluctance Motors Multi-stack Computational Switched Reluctance Motors None of the above Hint 81). In which one of the following, the acceleration is high? Variable reluctance stepper motor Permanent magnet stepper motor Both a and b None of the above Hint 82). The maximum shear stress is _________________ in PM brushless motor? Up to 20,000 Over 60,000 Up to 35,000 None of the above Hint 83). In which one of the following motor, the torque ripple is about 10%? Cage induction motor PM brushless motor SRM None of the above Hint 84). How many numbers of switches are there in a C-dump converter? Two Three Six Four Hint 85). What is the standard form of MPC? Model Predictive Commutator Model Predictive Competitor Model Predictive Control None of the above Hint 86). In which one of the following the temperature effect is low? Brushless DC motor Switched reluctance motor Both a and b None of the above Hint 87). The permittivity of vacuum is referred as ___________________ constant? Electric Magnetic Both a and b None of the above Hint 88). In which one of the following PMAC the stator has distributed winding? Sinusoidally excited Trapezoid ally excited Both a and b None of the above Hint 89). The figure shown below is a block diagram of _____________________ motor? SRM Synchronous motor Induction motor None of the above Hint 90). What is the standard form of ADITC? Advanced Direct Instantaneous Torque Commutator Advanced Direct Internal Torque control Advanced Direct Instantaneous Torque control None of the above Hint 91). In which one of the following, the dynamic response is very slow? Variable reluctance stepper motor Permanent magnet stepper motor Both a and b None of the above Hint 92). The maximum shear stress is _________________ in cage induction motor? Up to 20,000 Over 60,000 Up to 35,000 None of the above Hint 93). What is the standard form of MPTC? Model Predictive Torque Commutator Model Predictive Torque Competitor Model Predictive Torque Control None of the above Hint 94). The permeability of vacuum is referred as ___________________ constant? Electric Magnetic Both a and b None of the above Hint 95). The electrical displacement divided by electrical field intensity is known as ______________? Permittivity Permeability Both a and b None of the above Hint 96). How many numbers of switches are there in an asymmetric converter? Two Three Six Seven Hint 97). In which one of the following, the rotor is not magnetised? Permanent magnet stepper motor Variable reluctance stepper motor Both a and b None of the above Hint 98). Which one of the following motor drives fed with direct current? PMSM BLDCM Both a and b None of the above Hint 99). The figure shown below is a block diagram of _____________________ motor? SRM Synchronous motor Induction motor None of the above Hint 100). What is the standard form of DITC? Direct Instantaneous Torque Commutator Direct Internal Torque control Direct Instantaneous Torque control None of the above Hint Read more about Reluctance Motor For More MCQs Switched Reluctance Motor Question & Answers DC Motor Question & Answers Synchronous Motor Question & Answers Single Phase Induction Motor Question & Answers Poly Phase Induction Motor Question & Answers Time's up
