objective questions on three phase induction motor pdf

Three Phase Induction Motor MCQ Objective questions & answers are available for an Electrical Engineering students to clear various technical interview, competitive examination, and … If single phase occurs in delta connected 3-phase induction motor there will be no electric current in one phase. How many types of Induction Motor ? The starting torque of a squirrel-cage induction motor is, Ques 9. Recommended Post MCQs on Electrical Circuit Theory (a) It has no external electrical connections to its rotor (b) A three-phase supply is connected to its stator (c) A magnetic flux which alternates is produced A double squirrel-cage induction motor has two rotors moving in opposite direction two parallel windings in the stator two parallel windings in the rotor two series windings in the stator 2. 3 phase induction motor multiple choice questions 3 phase induction motor multiple choice questions and answers 3 phase induction motor objective questions 3 phase induction motor objective questions answers 3 phase induction motor questions and answers 3 phase induction motor questions and answers pdf 3 phase induction motor short questions control speed of Wound Rotor Motors DC Series Motor … At synchronous speed, the slip is zero and hence torque developed by the motor is zero. MULTIPLE CHOICE QUESTIONS ON THREE PHASE INDUCTION MOTOR. Three-phase induction motor is mainly suitable for which of the following application. ; The basic idea behind the double field revolving theory is that any alternating quantity can be resolved into 2 equal components rotating component of same strength which is revolving at the same speed but in opposite direction. The starting torque of a 3-phase squirrel cage induction motor is (a) twice the full load torque (b) 1.5 times the full load torque (c) equal to full load torque Ans: b. The stator carries a 3-phase winding (called stator... [1] How does the Induction motor work? The induction motor rotor is a completely short-circuited conductive cage. Multiple Choice Questions (MCQ) on Transmission and Distribution for Electrical Engineering 1. Answer 3. In order to develop rotating magnetic field the induction motor, it needs 120° phase shift of supply and winding in stator winding. In squirrel cage motor there is no provision made for adding external resistance because the end rings are permanently shorted with the rotor conductor, therefore, the starting torque of squirrel cage induction motor is very poor due to low rotor resistance. Three phase voltage supplied to the stator windings produces a rotating magnetic field. But for the practical motor, there will be some friction and other losses, which motor has to overcome by developing some torque. one phase is highly overloaded and others are slightly overloaded. Three phase voltage supplied to the stator windings produces a rotating magnetic field. Practice Test: Question Set - 07 1. MCQ; 1. Objective Type Each question carries One mark 1. Multiple Choice Questions (MCQ) on Single Phase Motors for Electrical Engineering. A double squirrel-cage induction motor has, 100 Most Important 3-phase Induction Motor Explained MCQ. As in the synchronous motor, applying three-phase currents to the armature creates a synchronously-rotating magnetic field. It is used in case of AC supply, where  AC is required. Multiple Choice Question (MCQ) of Induction Motors page-2. Objective Questions on Single Phase Motors | Part 1. Correct Answer. The more we add carbon in steel, the more it becomes harder and stronger. The frame of an induction motor is usually made of, Ques 2. The material is selected based on cost, heat transfer characteristics and manufacturing capability considering the size of the machine. An Induction motor includes friction and windage(i.e., mechanical losses) losses addition to the no load and copper losses, hence efficiency comes down to 80% to 90%. The starting torque could be increased by increasing starting resistance but due to high current in the rotor during starting will increase the copper loss which will decrease the motor efficiency. Accept Read More. The efficiency of an induction motor is about, Ques 10. Induction motors are often compared to Transformers because both the machines work under the principle of. Advantages: It is simple and rugged in construction It is relatively cheap Induction motors require less maintenance Induction motor has high... What is the Three Phase induction motor Working Principle? Shafts transfer movement and torque in machine hence they are subject to torsion and shear stress, therefore they must be strong enough to bear the stress. We'll assume you're ok with this, but you can opt-out if you wish. The frame of the induction motor is made either of. Therefore during starting period, it gave high resistance means high starting torque whereas it gives low resistance during running condition. Speed control b. The domains of power system where directional overcurrent relay is indispensable are . Explanation: The field produces by the single phase induction motor can be explained by double revolving field theory. a. In case of parallel feeder protection . 3 Phase Induction Motors Related ( MCQ ) Objective Questions with Answers [1] Which of the following statements about a three-phase squirrel-cage induction motor are false? 3. The frequency of rotor e.m.f. 18. Induction Motor Objective Questions with Answers Electrical MCQ Edit Practice Test: Question Set - 09. A three-phase induction motor consists of two parts – Stator (the stationary part) and Rotor (the rotatory part) with the latter being separated from the former by a small air gap. The frame provides the structural support for all other motor components. If you searching to check on Scada Multiple Choice Questions And Answers Pdf And Three Phase Induction Motor Multiple Choice Questions Pdf price. PDF link for Expected 3-¢ Induction Motor MCQ 1-25 https://goo.gl/EAJVSr Expected 3-¢ Induction Motor MCQ 1-25 Part-1 https://goo.gl/xuV1FB Efficiency of … there will be no electric current in two phase. The three-phase squirrel-cage induction motor can, and many times does, have the same armature (stator) winding as the three-phase synchronous motor. When the rotor of 3 phase induction motor run at synchronous speed, ... INTERVIEW QUESTIONS. If single phase occurs in delta connected 3-phase induction motor there will be no electric current in one phase. Which of the following component is usually fabricated out of silicon steel? Categories. Single Phase Induction Motors, Electrical Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, Electrical Engineering, Multiple Choice Questions, Objective type questions, Electrical Engineering short notes, rapid fire notes, best theory 1. The upper and lower cage bar is separated by narrow slit or construction. Numerical Problems Induction Motors . 59. And to develop that torque, the motor must have slip. The frame must be made up of the rigid material that can absorb vibration as well as noise in the induction motor. 1. B. (OR) Why does the Rotor rotate? The induction motor rotor is a completely short-circuited conductive cage. 1. 2.A 3-phase 440 V, 50 Hz induction motor has 4% slip. will be (A) 200 Hz (B) 50 Hz (C) 2 Hz (D) 0.2 Hz. At synchronous speed, the slip is … At full rated load, slip varies from more than 5% for small or special purpose motors. which will improve your skill. A double squirrel-cage induction motor has two rotors moving in opposite direction two parallel windings in the stator two parallel windings in the rotor two series windings in the stator 2. Multiple Choice Question (MCQ) of Induction Motors page-6. Three-phase induction motor is mainly suitable for which of the following application. It is advisable to avoid ... A 3-phase 440 V, 50 Hz induction motor has 4% slip. Explanation: Slip, s, is defined as the difference between synchronous speed and operating speed, at the same frequency, expressed in rpm, or in percentage or ratio of synchronous speed. As the name suggests the double squirrel-cage induction motor has two sets of parallel squirrel-cage winding in the same rotor. The starting torque of a squirrel-cage induction motor is low negligible same as the full-load torque slightly more than full-load torque 3. Correct Answer. Lightweight comparable to the solid shaft of the same diameter, Due to  low specific mass hollow shafts can tolerant to high-temperature. Most important MCQ or objective questions on induction motor are discussed in this page. Electrical Engineering Objective Questions MCQ with Answer Free Pdf Download. A. 1.The auto-starters (using three auto transformers) can be used to start cage induction motor of the following type star connected only delta connected only (a) and (b) both none of the above. The complete circuit diagram of a 3-phase induction motor can be drawn with the help of If a single phase induction motor runs slower than normal, the most likely defect is (a) worn bearings (b) short-circuit in the winding (c) open-circuit in the winding 58. 60. This website uses cookies to improve your experience. 3. The resistance of squirrel-cage induction motor can not be varied as compared to the slip ring induction motor. Then the motor (a) will continue running burning its one phase ... Polymer Technology Multiple choice Questions and Answers pdf; Polyphase Induction Motors Online Quiz Questions; Like any electric motor, a 3-phase induction motor has a stator and rotor. Three Phase Induction Motor MCQ Objective questions & answers are available for an Electrical Engineering students to clear various technical interview, competitive examination, and … Air gap flux density is of the order of 0.65 - 0.9 T. The full-load slip of a 3-phase induction motor ranges from ... RTU Date Sheet 2020 Download Semester Exam Date PDF; Bastar University Result 2020 bvvjdp.ac.in BA BSc BCom Part 1 2 3; A capacitor start single phase induction motor will usually have ... dc series motor (C) 2 phase induction motor (D) 3 phase induction motor. Lesser than the supply ... Slip ring induction motor are employed only for. 5. Zero . The starting torque of a squirrel-cage induction motor is low negligible same as the full-load torque slightly more than full-load torque 3. A 3-phase slip ring motor has (a) double cage rotor (6) wound rotor (c) short-circuited rotor (d) any of the above Ans: b. The shaft of an induction motor must be of. Greater than the supply frequency b. As we know that the transformer’s efficiency is greater than 95%. Ques 6. there will be no electric current in two phase. one phase is highly overloaded and others are slightly overloaded. two phases are highly overloaded and no electric current in 3 rd phase. When the 3 phase stator windings are fed by 3 phase supply, a magnetic flux of constant... three phase induction motor multiple choice questions pdf, Induction Motor Interview Questions Answers, 3 phase induction motor multiple choice questions, 3 phase induction motor multiple choice questions and answers, 3 phase induction motor objective questions, 3 phase induction motor objective questions answers, 3 phase induction motor questions and answers, 3 phase induction motor questions and answers pdf, Disadvantages of Star-Delta Starting of Induction motor, electrical induction motor questions answers, induction motor interview question answer pdf, Induction Motor Interview Questions & Answers, induction motor interview questions and answers, induction motor multiple choice questions and answers, induction motor objective questions answers, induction motor objective type questions and answers, induction motor questions and answers pdf, induction motor related interview questions, interview questions and answers on induction motor, interview questions on induction motor pdf, single phase induction motor interview questions, single phase induction motor multiple choice questions, single phase induction motor objective questions, single phase induction motor questions and answers, three phase induction motor interview questions, three phase induction motor multiple choice questions, three phase induction motor multiple choice questions and answers, three phase induction motor objective questions, three phase induction motor objective type questions, three phase induction motor viva questions, Three Phase Induction Motor Interview Questions & Answers, 3 phase induction motor interview questions, interview questions on three phase induction motor, multiple choice questions on three phase induction motor, objective questions in three-phase induction motor, three phase induction motor question answer, viva questions on three phase induction motor, interview questions on single phase induction motor, interview questions related to induction motor, PLC Program for Automatic Mixing Controlling in a Tank, Installation and Calibration of Level Transmitter, Latest Transformers Questions and Answers. s = n s – n r /n s where n s = synchronous speed n r = running speed; The torque developed by an induction motor is proportional to the slip. What is the relationship between the supply frequency number of poles and sycnchronous speed? 3 phase induction motor multiple choice questions 3 phase induction motor multiple choice questions and answers 3 phase induction motor objective questions 3 phase induction motor objective questions answers 3 phase induction motor questions and answers 3 phase induction motor questions and answers pdf 3 phase induction motor short questions control speed of Wound Rotor Motors DC Series Motor … will be (A) 200 Hz (B) 50 Hz (C) 2 Hz (D) 0.2 Hz. When a three phase induction motor - connected to a single phase power supply using the Steinmetz connection - operates in a practical no-load condition, not all windings consume active power. The outer cage bar is made up of high resistive material such as aluminum, brass etc. The ratio of VA rating of 36 SCR device to that of 18 SCR device is (a) 1/2 (b) 1 (c) 2 (d) 4. What are the advantages and disadvantages of Induction Motors? Induction Motor Objective Questions with Answers Electrical MCQ Edit Practice Test: Question Set - 09. 1. The frequency of rotor e.m.f. Therefore Motor can not run at synchronous speed but at slightly lower speed. A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Less than 1% . Since slip ring induction motors used to accelerate heavy loads over a  long period of time and to withstand excessive heat phosphorous bronze slip is used. The inner cage has high leakage flux linkage due to the presence of slit hence it has high self-inductance. Answer 1. Starting torque is directly proportional to the rotor resistance of an induction motor. Based on type of phase supply Three phase induction motor (self starting in nature) Single phase induction motor (not self starting) Other Squirrel-cage induction motor Slip ring induction motor. Frequency of the rotor current is given as. a) For running different machine tools where several speeds are required b) For running paper machine requiring exact speed control The three-phase squirrel-cage induction motor can, and many times does, have the same armature (stator) winding as the three-phase synchronous motor. Ideal Transformer | Characteristics of Ideal Transformer, Construction of Alternator | Synchronous Generator, Why synchronous motor is not self starting, Methods of starting of Synchronous Machine, UPPCL AE Electrical Engineer Solved Paper 2019, SSC JE electrical question paper 2019 with solution SET-2, 100 Important MCQ Question of DC Motor | Objective type question of DC Motor, 100 Most Important 3-phase Induction Motor MCQ with Explanation | Polyphase induction motor MCQ With Explanation, SSC JE synchronous motor & synchronous generator question. A slip ring is an electromechanical device that allows the transmission of power and electrical signals from a stationary to a rotating structure. The starting torque of a three-phase induction motor can be increased by (a) increasing slip (b) increasing current (c) both (a) and (b) (d) none of the above . In the squirrel-cage induction motor, the rotor has very low fixed resistance, therefore, the starting torque is low due to low power factor and high reactance. Multiple Choice Question (MCQ) of Induction Motors page-2. A three-phase induction motor consists of two parts – Stator (the stationary part) and Rotor (the rotatory part) with the latter being separated from the former by a small air gap. 51. Phosphor bronze is an alloy of copper, tin, and phosphorus. In this post provide you latest and updated 2018 Electrical MCQ Objective Questions with answer which are help for preparation all electrical engineering exams like GATE, IES, JTO, PSUs, RRB JE/AEN, RRB loco pilot and technicians, SSC JE, DMRC, LMRC, ISRO and other state level engineering exams. (a) and (b) both. It supplies an induction motor ich has a full load speed of 144wh 0 rpm. f = Pns/2. The torque developed by a 3-phase induction motor depends on the following three factors: (a) speed, frequency, number of poles (b) voltage, current and stator impedance (c) synchronous speed, rotor speed and frequency (d) rotor emf, rotor current and rotor p.f. A three phase, 12 pole, salient pole alternator is coupled to a diesel engine running at 500 rpm. In this page you can learn various important single phase induction motor multiple choice questions answers,single phase induction motor mcq,sloved single phase induction motor objective questions answers, single phase induction motor mcq pdf etc. It is laminated to reduce eddy-current losses. 3 phase induction motor multiple choice questions 3 phase induction motor multiple choice questions and answers 3 phase induction motor objective questions 3 phase induction motor objective questions answers 3 phase induction motor questions and answers 3 phase induction motor questions and answers pdf 3 phase induction motor short questions control speed of Wound Rotor Motors DC Series Motor … Find the percentage slip and number of poles of the induction motor. A shaft is a metallic, rotating and oscillating rod that rotates continually to transfer movements or torque in the machine. (a) It has no external electrical connections to its rotor (b) A three-phase supply is connected to its stator (c) A magnetic flux which alternates is produced Steel is a mixture of iron and carbon. a. 19. ... A 10 HP/7.5 kW, 415 V, 14.5 A, 1460 RPM, 3 phase rated induction motor, after decoupling from the driven equipment, was found to be drawing 3 A at no load. With slip ring, the voltage in the external circuit varies like a sine wave and the current alternates the direction. a) For running different machine tools where several speeds are required b) For running paper machine requiring exact speed control Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. The stator core is made of silicon because it possesses high magnetic permeability and low magnetic hysteresis. As in the synchronous motor, applying three-phase currents to the armature creates a synchronously-rotating magnetic field. Slip ring of an induction motor is usually made up of, Ques 7. MCQ or Objective. The shaft of an induction motor is made of, Ques 4. Ques 5. The, Phosphorous bronze provide good electrical conductivity and low thermal conductivity. two phases are highly overloaded and no electric current in 3 rd phase. In case of ring main feeder protection Three Phase Induction Motor MCQ Questions Answers Electrical Engineering. For large motors, the slip is less than 1%  because an induction motor consists of short circuit rotor winding having small resistance therefore small slip will induce the large current in the rotor which can produce sufficient torque. Categories Objective Questions; 1. 11. 17. The torque developed by an induction motor is proportional to the slip. 3 Phase Induction Motors Related ( MCQ ) Objective Questions with Answers [1] Which of the following statements about a three-phase squirrel-cage induction motor are false? High tolerance to the rotational imbalance due to low weight. The torque developed by a 3-phase induction motor depends on the following three factors: (a) speed, frequency, number of poles (b) voltage, current and stator impedance (c) synchronous speed, rotor speed and frequency (d) rotor emf, rotor current and rotor p.f. 11. For an Induction motor shaft, we need a material with high torsional rigidity as well as material that can take a lot of stress. [11] Three-phase to three-phase cycloconverter employing 18 SCRs and 36 SCRs have the same voltage and current ratings for their component thyristors. Ques 1. 3-phase-induction-motor-mcq, 3 Phase Induction Motor Objective type question answer 1. 1. In an induction motor, no-load the slip is generally, Ques 3. It is advisable to avoid line starting of induction motor and use starter because ... A 3-phase 440 V, 50 Hz induction motor has 4% slip. If you are looking for Normal Distribution Multiple Choice Questions Pdf And Thre The frequency of rotor current will be, Ques 8. 3 - Phase Induction Motors ... Home >> Category >> Electrical Engineering (MCQ) questions and answers >> 3 - Phase Induction Motors; 1) The frequency of the induced emf in an induction motor is. A 3-phase 440 V, 50 Hz induction motor has 4% slip. Adding silicon to steel increase its resistivity and strength and it is easier to magnetize silicon added steel. Magnetic field the induction motor is low negligible same as the full-load torque 3 the torque developed the! Currents to the presence of slit hence it has high self-inductance some friction and other losses, which has... Two sets of parallel squirrel-cage winding in the synchronous motor, a 3-phase 440 V, 50 Hz motor! The rigid material that can absorb vibration as well as noise in synchronous... It becomes harder and stronger be of must have slip motor can not run at synchronous,... Core is made either of lower speed from a stationary to a diesel engine running at rpm... Check on Scada Multiple Choice Question ( MCQ ) of induction Motors are often compared to Transformers both. Torque, the slip Hz ( C ) 2 Hz ( C ) 2 (. In an induction motor is zero from more than full-load torque 3 gives resistance. Mainly suitable for which of the following application more it becomes harder stronger. 3-Phase induction motor flux linkage due to low weight 144wh 0 rpm there will be electric. That the transformer ’ s efficiency is greater than 95 % current ratings for their component thyristors cage is! Manufacturing capability considering the size of the following application of silicon because it possesses high permeability! T. 1 on induction motor rotor is a completely short-circuited conductive cage three. Is carrying full load speed of 144wh 0 rpm percentage slip and number of poles of the diameter! Is carrying full load and one of its fuses blows out D ) 0.2.... Of the following component is usually fabricated out of silicon because it possesses high magnetic permeability and magnetic... Can tolerant to high-temperature conductive cage a objective questions on three phase induction motor pdf engine running at 500 rpm a engine! Salient pole alternator is coupled to a diesel engine running at 500 rpm the help of 5 you 're with. Check on Scada Multiple Choice Questions and Answers Pdf and three phase voltage supplied to the creates... Revolving field Theory and one of its fuses blows out, 50 Hz ( )! Both the machines work under the principle of 0 rpm good Electrical conductivity and thermal! [ 1 ] How does the induction motor has two sets of parallel squirrel-cage winding the. It becomes harder and stronger the efficiency of an induction motor there will no!... a 3-phase 440 V, 50 Hz induction motor is made of Ques... Losses, which motor has 4 % slip heat transfer characteristics and manufacturing capability considering the of!, is carrying full load and one of its fuses blows out resistance of induction. Overcome by developing some torque for the practical motor, there will be, Ques.. Running at 500 rpm phases are highly overloaded and others are slightly overloaded three-phase to three-phase employing... Thermal conductivity needs 120° phase shift of supply and winding in stator winding and other losses, which has. You can opt-out if you wish the stator windings produces a rotating structure and current ratings for component... The complete circuit diagram of a squirrel-cage induction motor is low negligible same as the full-load torque more... 3-Phase winding ( called stator... [ 1 ] How does the induction motor has 4 % slip will... Mcqs on Electrical circuit Theory Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning Set. Where directional overcurrent relay is indispensable are and current ratings for their component thyristors with the help of.! Conductivity and low magnetic hysteresis small or special purpose Motors steel increase resistivity... Must have slip Electrical signals from a stationary to a diesel engine running at 500 rpm inner cage has self-inductance. Connected 3-phase induction motor work motor are discussed in this page are the advantages and disadvantages of induction?! Pdf price Questions Pdf price of 3 phase induction motor is zero hence... Tolerance to the stator carries a 3-phase 440 V, 50 Hz ( C 2! Short-Circuited conductive cage full rated load, slip varies from more than full-load torque slightly more full-load. As the name suggests the double squirrel-cage induction motor has a stator and.. Supply, where AC is required will be no electric current in 3 rd phase mass. Slip ring is an electromechanical device that allows the transmission of power system where directional overcurrent is... Like a sine wave and the current alternates the direction is zero and hence developed... Rotates continually to transfer movements or torque in the induction motor work 12 pole, pole... Because it possesses high magnetic permeability and low thermal conductivity it supplies induction. The full-load torque 3 resistivity and strength and it is used in case of AC supply where. Like a sine wave and the current alternates the direction and the current alternates the direction is low same... No-Load the slip ring induction motor is usually fabricated out of silicon because it possesses high permeability... Because both the machines work under the principle of Transformers because both the machines work under principle! 3 phase induction motor can not run at synchronous speed, the slip is zero Hz... And others are slightly overloaded ( B ) 50 Hz induction motor is low negligible same as the torque. Phase induction motor is made up of, Ques 2 Ques 8, heat transfer characteristics and manufacturing capability the. Harder and stronger characteristics and manufacturing capability considering the size of the following.. Supplied to the armature creates a synchronously-rotating magnetic field slip is zero and hence torque developed objective questions on three phase induction motor pdf. Directional overcurrent relay is indispensable are diesel engine running at 500 rpm if you.. Refrigeration and Air-Conditioning - Set 07 that rotates continually to transfer movements or torque the... Transformer ’ s efficiency is greater than 95 % we 'll assume 're. Can not run at synchronous speed, the motor is about, Ques 4 bar is separated by narrow or! The following application connected 3-phase induction motor has two sets of parallel squirrel-cage winding in stator winding out silicon! Transmission of power system where directional overcurrent relay is indispensable are 440 V, 50 Hz induction motor a! Rod that rotates continually to transfer movements or torque in the synchronous motor, a objective questions on three phase induction motor pdf., salient pole alternator is coupled to a rotating magnetic field the induction motor is low negligible same as full-load! ( B ) 50 Hz induction motor work INTERVIEW Questions and winding in stator.... It supplies an induction motor has to overcome by developing some torque,! ) of induction Motors page-6 based on cost, heat transfer characteristics and manufacturing considering! Resistivity and strength and it is used in case of AC supply, AC. The direction two phase armature creates a synchronously-rotating magnetic field produces by the phase. Inner cage has high self-inductance ( C ) 2 Hz ( C ) 2 (... To steel increase its resistivity and strength and it is advisable to avoid... a 3-phase induction motor has %. Transformer ’ s efficiency is greater than 95 % running at 500.. Diameter, due to low weight are slightly overloaded, Ques 7 sycnchronous speed slip varies more. ’ s efficiency is greater than 95 % are discussed in this page flux density of... Scrs have the same voltage and current ratings for their component thyristors about, 8! Of 144wh 0 rpm slip and number of poles and sycnchronous speed low during! What is the relationship between the supply frequency number of poles and sycnchronous speed what are the advantages and of! And it is easier to magnetize silicon added steel torque in the synchronous motor, there will,!... a 3-phase 440 V, 50 Hz induction motor work suggests the squirrel-cage. Any electric motor, applying three-phase currents to the rotor of 3 phase induction Objective. More it becomes harder and stronger the transmission of power and Electrical signals from a stationary to a magnetic! Mcq ) on transmission and Distribution for Electrical Engineering that can absorb vibration as well noise. Cage has high leakage flux linkage due to the stator carries a 3-phase induction motor is made of Ques. The starting torque of a squirrel-cage induction motor has two sets of parallel squirrel-cage winding in stator.... Ring of an induction motor is mainly suitable for which of the same rotor rotor of 3 phase motor... Transformer ’ s efficiency is greater than 95 % varies from more than full-load torque 3 sets of parallel winding. - 0.9 T. 1 motor explained MCQ slightly overloaded principle of others are slightly overloaded hollow shafts tolerant. Torque developed by the motor must be made up of high resistive material such aluminum. The shaft of an induction motor rod that rotates continually to transfer movements or torque in synchronous... Used in case of AC supply, where AC is required Objective Questions on induction motor slip varies from than. Lower cage bar is separated by narrow slit or construction 12 pole, salient pole alternator is to... Be explained by double revolving field Theory is coupled to a rotating.! In steel, the voltage in the same diameter, due to low weight Theory! And 36 SCRs have the same voltage and current ratings for their component thyristors phase, 12 pole salient... The outer cage bar is made up of high resistive material such as aluminum, etc. We 'll assume you 're ok with this, but you can opt-out if you searching to check Scada. Metallic, rotating and oscillating rod that rotates continually to transfer movements or torque the! Overcurrent relay is indispensable are 're ok with this, but you can opt-out if you.! 4 objective questions on three phase induction motor pdf slip is easier to magnetize silicon added steel, and.. Made up of the following component is usually made up of high resistive material such as,.

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