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Synchronous motor MCQs

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The method which can be used to start a synchronous motor: 6. Speed regulation of synchronous motor is: 7. The maximum pullout torque in a synchronous motor occurs at: 8. Synchronous motors are self-starting, the statement is: 9. The power factor of under excited synchronous motor is Answer 1. No load with over-excited fields . Explanation: A synchronous condenser (sometimes called a synchronous capacitor or synchronous compensator) is a device, identical to a synchronous motor, whose shaft is not connected to any loaf but spins freely. It does not to convert electric power to mechanical power or vice versa, but its function is to adjust conditions on the electric. Synchronous Motor MCQ. Correct answer: 1. Load. Correct answer: 3. Both of these. A synchronous motor running at no load with P.F = 1. If the field current is increased, the power factor will become: Correct answer: 1. Leading Synchronous Motor Multiple Choice Questions and Answers. 1. The direction of rotation of a synchronous motor can be reversed by reversing. D. None of the above. 2. In a synchronous motor, the magnitude of stator back e.m.f. E b depends on. C. Both the speed and rotor flux Synchronous Motor MCQs For Junior engineer. November 14, 2020 September 15, 2020 by prince70386. 1. Usually the synchronous motor can operate at: (A) Leading power factor only (B) Unity power factor only (C) Lagging, leading and unity power factor (D) Lagging power factor only. 2. Which is an unexcited single phase synchronous motor

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Synchronous Motor MCQ. Leave a Comment / Uncategorized / By Ajay Sharma. 1. The mmf produced by single phase winding is (a) pulsating and rotating with constant speed. (b) pulsating and stationary. (c) constant in amplitude and stationary. (d) constant in amplitude and rotating Learn Synchronous Motors MCQ questions & answers are available for a Electrical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Synchronous Motors MCQ question is the important chapter for a Electrical Engineering and GATE students In this page you can learn various important synchronous motor multiple choice questions answers,synchronous motor mcq,sloved synchronous motor objective questions answers, synchronous motor mcq pdf etc. which will improve your skill Synchronous Motor Multiple Choice Questions and Answers. 1. An important advantages of a synchronous motor over wound round induction motor is that. A. Its power factor may be varied at will. B. Its speed is independent of supply frequency. C. Its speed may be controlled more easily Synchronous motor MCQ part 1. Electrical Engineering Multiple choice questions on Synchronous motors for interviews, job exams, and concept development. Electrical Engineering MCQ [ hide] 1 Synchronous motors generally have. 2 Which of the following is correct statement about the magnitude of field flux in 3 phase synchronous motor

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Has small value and lags for low excitation. Answer. Answer. b. 125. In a synchronous motor, the load angle and internal angle are denoted by α and θ respectively. The maximum torque or pull out torque of a synchronous motor occurs when. α + θ = 0°. α - θ = 90°. α + θ = 90° 107. A synchronous motor may fail to pull into synchronism owing to. 108. The slip rings employed in a 3-phase synchron0us machine are insulated for. 109. The stator core of a synchronous machine is built up of _______ laminations. 110. In case one phase of a 3-phase synchronous motor is short-circuited the motor will

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  1. The V-curve of a synchronous motor represents the variation in the armature current with field excitation at a given output power. Answer. Answer. c. 146. A synchronous motor is operated from a bus voltage of 1.0 p.u. and is drawing 1.0 p.u. zero power factor leading current. Its synchronous reactance is 0.5 p.u
  2. Electrical Engineering MCQ [ hide] 1 The speed regulation of a synchronous motor is always. 2 The maximum value of torque angle in synchronous motor (expressed in electrical degrees is. 3 In synchronous motor the loss of synchronization after the pullout torque is exceeded is termed as. 4 The larger the field current of synchronous motor
  3. 0 Comments. Synchronous motors are the electrical machines that convert AC electrical power to mechanical power. Electrical Engineering XYZ shares 10 Most Important synchronous motors MCQs. Contents

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  1. Synchronous Motor MCQ. 46. An ideal synchronous motor has no starting torque because the. Rotor is made up of salient poles. Relative velocity between the stator and rotor mmf is zero. Relative velocity between stator and rotor mmf is not zero. Rotor winding is highly inductive. 47
  2. This video provides all the important mcq questions of synchronous motor in detail and also provides some important points to remember for exams and interv..
  3. MCQs of. Synchronous & Auto Synchronous Motors. 11. In 3 -Φ synchronous motor if one of the phases is short-circuited the motor will. 12. In a synchronous motor, the breakdown torque will be _________ to Applied voltage V. 13. In a synchronous motor, during hunting when the rotor speed exceeds the synchronous speed then damper bar develop. 14

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MCQs: Synchronous Motors Mcqs - Mcqs Clouds is a portal which provide MCQ Questions for all competitive examination such as GK mcq question, competitive english mcq question, arithmetic aptitude mcq question, Data Intpretation, C and Java programing, Reasoning aptitude questions and answers with easy explanations MCQs: In a synchronous motor, the maximum power developed depends on all of the following except: - (A) rotor excitation - (B) maximum value of coupling angl 4. Rating of the dc motor to be used in the starting of SM, should be higher than the synchronous motor. A. True B. False Answer: B Clarification: No, the dc motor used as pony motor is of lower rating than the synchronous motor it starts. 5. A synchronous machine with its field winding on stator and polyphase armature winding on rotor 11. For a practical synchronous motor, the pull-out torque will occur when the torque angle is nearly equal to _____ A. 0° B. 30° C. 45° D. 75° Answer: D Clarification: In a practical synchronous motor, the armature resistance cannot be neglected and hence the pull-out occurs at delta=beta which is the impedance angle and is practically 75. Latest Synchronous Motors Interview Questions and Answers List 1. Synchronous motors are generally not self-starting because (a) the direction of rotation is not fixed (b) the direction of instantaneous torque reverses after half cycle (c) startes cannot be used on these machines (d) starting winding is not provided on the machines Ans: b 2

Most Important Synchronous Motor MCQs January 11, 2018 October 27, 2020 admin 0 Comments. Synchronous motors are the electrical machines that convert AC electrical power to mechanical power. Electrical Engineering XYZ shares 10 Most Important synchronous motors MCQs. Contents Synchronous Motor MCQ Or Quiz July 21, 2020 July 21, 2020 Chetan Shidling 0 Comments Electrical. Hello guys, welcome back to my blog. In this article, I will share Synchronous Motor MCQ Or Quiz, electrical quiz questions related to synchronous motor or objective type questions for synchronous motor

Most Important Synchronous Motor MCQs Multiple Choice

Excitation On Synchronous Motor Multiple Choice Questions and Answers. 11. When the excitation of an unloaded salient pole synchronous motor suddenly gets disconnected. A. The motor stops. B. It runs as a reluctance motor at the same speed. C. It runs as a reluctance motor at a lower speed 5. Why a synchronous motor is a constant speed motor. Synchronous motor work on the principle of force developed due to the magnetic attraction established between the rotating magnetic field and the main pole feed. Since the speed of rotating magnetic field is directly proportional to frequency the motor operates at constant speed. 6

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Starting Of Synchronous Motor Multiple Choice Questions and Answers. 41. Synchronous motors are generally not self-starting because. A. The direction of rotation is not fixed. B. The direction of instantaneous torque reverse after half cycle. 42. A synchronous motor can be made self-starting by providing Synchronous Motor MCQ Questions and Answers Page - 3. 1. A three-phase, salient pole synchronous motor is connected to an infinite bus. It is operated at no load at normal excitation. The field excitation of the motor is first reduced to zero and then increased in the reverse direction gradually Induction Motor Mcqs for all competitive Examinations. 1. In an induction motor, the difference between the synchronous motor and the actual speed is known as: 2. In actual induction motor, the slip is generally: 3. An induction cannot have maximum speed of: 4

MCQs of Synchronous & Auto Synchronous Motors. Showing 1 to 10 out of 68 Questions (Synchronous motor) reactive power (d) control active power of load connected in the system . Show Answer: Answer: Option (a) 5. A synchronous phase modifier is a synchronous motor work as _____ (a Electrical Machine - II (3150910) MCQs. MCQs of Synchronous & Auto Synchronous Motors. Showing 51 to 60 out of 68 Questions When load on a synchronous motor running with normal excitation is increased, armature current drawn by it increases because (a

Synchronous Motor MCQ [Questions with Answers

  1. Electrical Machines MCQs with Answers. by Fenee Patel May 14, 2021 May 14, 2021 0 80. Chapter 4. Electrical Machines synchronous motor (c) universal motor (d) stepper motor Answer: Option (a) 17. Mechanically air gaps in induction motor are kept very low to avoid (a) lower power factor (b) lagging natur
  2. Synchronous Generator MCQs For Junior Engineer. September 21, 2020 September 15, 2020 by prince70386. 1. Voltage drop in an alternator occurs in: (A) Armature resistance, leakage resistance, armature reaction and earth connections
  3. Electrical Machine - II (3150910) MCQs. MCQs of Synchronous & Auto Synchronous Motors. Showing 41 to 50 out of 68 Questions A 3 phase synchronous motor is working at normal excitation, then the flux deficient in a circuit is _____ (a) given by armature winding mmf (b
  4. Answer ⇓. 15. In a synchronous motor, the main function of using damping winding is to. (A) reduce armature reaction. (B) prevent hunting only. (C) provide starting torque only. (D) prevent hunting and provide the starting torque
  5. Polyphase transformers & Rotating AC machines (3340901) MCQs. MCQs of Synchronous Motor. Showing 1 to 10 out of 15 Questions 1 2 1. Synchronous motor is If field of synchronous motor is under excited power factor will b
  6. Synchronous motor basic conceptshttps://www.youtube.com/watch?v=C-HaMtfq1Wg&t=1sPower factor https://www.youtube.com/watch?v=JJ8IosPT-yQ&t=93spower factor co..

Synchronous Motor Multiple Choice Questions (MCQ) and

Filed Under: Synchronous Motor MCQs Contents1 Speed regulation of synchronous motor is2 An over-excited synchronous motor3 Hunting in synchronous motor. electricalengineering.xyz. Synchronous Motor MCQs Part 1 with Explanatory Answer Related Mcqs: When V is the applied voltage, then the breakdown torque of a synchronous motor varies as_____? A. V B. V312 C. V2 D. 1/V... Which of the following motors is non-self starting

250+ TOP MCQs on BLDC Motors and Answers. DC Machines Multiple Choice Questions on BLDC Motors. 1. In BLDC motor field winding is kept on _______________. Clarification: Unlike conventional DC motor, BLDC motor has its field winding rotating. Unlike PMDC motor field winding is present. Thus, it is placed on rotor Hunting And Synchronous Condensor - MCQs with Answers. Q1. Oscillations of the rotor about its new equilibrium position, due to sudden application or removal of load in synchronous motor is called. a. Hunting. b. Galloping. d. Both (a) and (c A synchronous motor is running with normal excitation. When the load is increased, the armature current drawn by it increases because A. speed of the motor is reduced B. power factor is decreased C. Eb (back e.m.f.) becomes less than V (applied voltage) D. Er (net resultant voltage) in armature is increased E. none of the above.. These Reluctance Motor MCQ Questions Will help you to improve your Electrical Machines knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations. Question 1. A ______________ is a type of electric motor that induces non-permanent magnetic poles on the ferromagnetic rotor

Synchronous Motor MCQs For Junior engineer - TechnicalMCQ

  1. als Ques.2
  2. Synchronous Generator related MCQs for Test Preparation. 1-Voltage drop occur in an alternator in. Armature resistance only. Armature resistance and leakage reactance. leakage reactance Armature resistance and armature reaction. leakage reactance ,armature reaction, Armature resistance and earth connection. 2-The load factor of alternator or.
  3. MCQs: What will be the per unit impedance of a synchronous motor having a rating of 100 kVA, 13.2 kV and having a reactance of 75 Ω / ph? - Electrical Engineering Questions - Power System Analysis, Stability & Computer Technique Test Question
  4. A synchronous motor is running with normal excitation. When the load is increased, the armature current drawn by it increases because. 0. A. speed of the motor is reduced. B. power factor is decreased. C. Eb (back e.m.f.) becomes less than V (applied voltage) D. Er (net resultant voltage) in armature is increased
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The synchronous motor is not inherently self-starting because_____? A. the force required to accelerate the rotor to the synchronous speed in an instant is absent B. the starting device to accelerate the rotor to near synchronous speed is absent C. a rotating magnetic field does not have enough poles D. the rotating magnetic field is produced by only 50 Hz frequency current When the excitation of an unloaded salient pole synchronous motor suddenly gets disconnected_____? A. the motor stops B. it runs as a reluctance motor at the same speed C. it runs as a reluctance motor at a lower speed D. none of the abov Explanation. BLDC motors are one type of synchronous motor. This means the magnetic field generated by the stator and the magnetic field generated by the rotor, rotate at the same frequency. BLDC motors do not produce the slip which is normally seen in induction motors. BLDC motors come in single-phase, 2-phase, and 3-phase configurations Synchronous Motors MCQ Test & Online Quiz: Below is the Synchronous Motors MCQ test that checks your basic knowledge of Synchronous Motors. This Synchronous Motors Test contains 20 Multiple Choice Questions. You have to select the right answer to the question. Finally, you can also take the Online Quiz from the Take Synchronous Motors Quiz Button 200 Important Synchronous Motor MCQ Objective questions & answers are available for an Electrical Engineering students to clear various technical interview, competitive examination, and another entrance exam

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122. A synchronous motor which works on a leading power factor and does not drive a mechanical load is called as A. static condenser B. condenser C. synchronous condenser D. none of the above Answer: C. 129. A synchronous motor develops maximum power when load angle is A. 45° B. 60° C. 90° D. 120° Answer: C. 130. In a synchronous motor, the. Synchronous motor MCQ - 1. Synchronous motors are not self-starting because___ A. direction of rotation is not fixed B. direction of instantaneous torqu MCQs: For V-curves for a synchronous motor the graph is drawn between:? - (A) armature current and power factor - (B) terminal voltage and load facto In case one phase of a three-phase synchronous motor is short-circuited the motor will (a) not start (b) run at 2/3 of synchronous speed Multiple Choice Questions (MCQ) on Synchronous Motors for Electrical Engineering 1. Synchronous motors are generally not self-starti... Categories. MCQ 16. When the excitation of an unloaded salient-pole synchronous motor suddenly gets disconnected (A) the motor stops (B) it runs as a reluctance motor at the some speed (C) it runs as a reluctance motor at a lower speed. Get Answer A 17. The armature current of the synchronous motor has large values for (A) low excitation only (B) high excitation only (C) both high and low excitation

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Synchronous motor mcq pdf Author: Kifati Rajazido Subject: Synchronous motor mcq pdf. Here you can find Synchronous Motor Electrical Engineering Questions and Answers. Why Synchronous Created Date: 2/22/2020 3:34:11 P MCQs: In a synchronous motor, damper windings are provided on? - (A) stator frame - (B) rotor shaft. If the synchronous motor, properly synchronised to the supply is running on no load and is having negligible loss then_____? A. the stator current will be zero Electrical Machines Multiple Choice Questions on Physical Concepts of Synchronous Machine Operation. 1. Floating of synchronous machine on infinite bus means ___________. A. Fa = 0 and machine neither generator nor motor. B. Fa is not zero and machine neither generator nor motor. C. Fa = 0 and machine is not excited As the load is applied to a synchronous motor, the motor takes more armature current because. 0. A. the increased load has to take more current. B. the rotor by shifting its phase backward causes motor to take more current. C. the back e.m.f. decreases causing an increase in motor current. D. the rotor strengthens the rotating field casuing.

Behaviour of Synchronous Motor On Loading - MCQs Q1. With increase in load, the speed of synchronous motor a. Increases b. Decreases c. Remains constant d. None of the above View Answer / Hide Answer. ANSWER: c. Remains constant . Q2. Back emf in case of synchronous motor depends on the a. Excitation given to the field windin Q.11. A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because. (a)synchronous motor has no slip. (b) stator supply is not required to produce magnetic field. (c)mechanical load on the rotor remains constant. (d)synchronous motor has large air gap. Ans Get Synchronous Motor Different Excitations Multiple Choice Questions (MCQ Quiz) with answers and detailed solutions. Download these Free Synchronous Motor Different Excitations MCQ Quiz Pdf and prepare for your upcoming exams Like SSC, Railway, UPSC, State PSC V-Curves & Inverted V-Curves In Synchronous Motors - MCQs. Q1. If graph of armature current drawn by synchronous motor is against field current is plotted then the resulted graph is known as. a

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MCQs: In case one phase of a three-phase synchronous motor is short-circuited the motor will_____? Category: Electrical Engineering Questions, Published by: T-Code Scripts MCQs: Synchronous motors are generally not self-starting because A synchronous motor can develop synchronous torque: A. when under loaded. B. while over-excited. C. only at synchronous speed. D. below or above synchronous spee A 50 Hz, 4 pole single phase induction motor will have a synchronous speed of. 1200 rpm. 1500 rpm. 1400 rpm. 1100 rpm Get Synchronous Motor Properties Multiple Choice Questions (MCQ Quiz) with answers and detailed solutions. Download these Free Synchronous Motor Properties MCQ Quiz Pdf and prepare for your upcoming exams Like SSC, Railway, UPSC, State PSC

If the synchronous motor, properly synchronised to the supply is running on no load and is having negligible loss then_____________? A. the stator current will be zero. B. the stator current will be very small. C. the stator current will be very high. D. the back e.m.f. will be more than the supply voltage #synchronous motor & MG set 18 objective questions and answers#synchronous motor & MG set super mcq series#18 important question of synchronous motor & MG se.. Electrical engineering MCQs questions topic wise - Power Systems - Electrical Power Generation, Power Systems - Transmission & Distribution of Electrical Power, Electrical Machines - Transformer, Electrical - Induction Machines, Electrical - D.C. Machines, Power Systems - Switchgear and Protection, Electrical - Synchronous Machines, Electrical Measurements & Units, Electrical interview.

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SYNCHRONOUS MOTOR MCQ | SYNCHRONOUS MOTOR IMPORTANT MCQ | SYNCHRONOUS MOTOR QUESTION |ABOUT THIS VIDEO :- Dosto Is video me maine synchronous motor ke import.. The maximum power developed in a synchronous motor will depend on__________? A. the rotor excitation only. B. the supply voltage only. C. the rotor excitation and supply volt-age both. D. the rotor excitation, supply voltage and maximum value of coupling angle (90°) E. none of the above. Mcq Added by: admin Synchronous Motor MCQ Quiz Answers With Solutions You can find four options to the Synchronous Motor Electrical Engineering Questions. And, you need to read the question and select one among all. If you don't know the answer click on the View Answer button to know the answer to the question. Finally, you will know the answers to all questions. Synchronous Generator Questions and Answers PDF. 1. Leakage reactance of the armature of a salient pole synchronous machine which varies with the position of rotor is due to leakage flux. (a) of end connections. (b) which comes out of slot teeth, crosses the air-gap and enters the pole faces Industries Extension Officer Synchronous motor mcq part2. 11. In a 3-phase synchronous motor. B. the speed of stator MMF is always less than that of rotor MMF. rotor MMF is zero. 12. A salient pole synchronous motor is running at no load. Its field. current is switched off

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Answer: Option A. Solution: 315. EE Board Exam April 1992. A 500 kW, 600-V DC, 12-phase synchronous converter operates as a direct converter at a full load efficiency of 92% and a power factor of 0.93. Calculate the AC voltage between slip rings and the AC current drawn from a 12-phase transformer fed supply Induction Motor MCQ Questions Part 2 with solutions. Contents [ hide] 1 A 3-phase delta connected induction motor is carrying too heavy load and one of its fuses blows out. Afterwards the motor. 2 The stator of 3-phase induction motor produces magnetic field that is. 3 Which of following is correct regarding the rotor speed in a 3 -phase. Latest Electrical Machines MCQs. By practicing these MCQs of Synchronous Machines MCQs ( Electrical Machines ) MCQs - Latest Competitive MCQs , an individual for exams performs better than before.This post comprising of objective questions and answers related to Synchronous Machines MCQs ( Electrical Machines ) Mcqs . As wise people believe Perfect Practice make a Man Perfect Synchronous Motor MCQs Sort The advantages of amortisseur winding: It increases stability It develops torque which is useful for fast machine It develops torque..

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Synchronous Machine: Speed of Synchronous Machine: Synchronous machine are designed to be operated at synchronous speed, which is given by: Where. N­ s is the synchronous speed; f is the line voltage frequency; P is the number of poles in a machine; Synchronous Motor: Voltage Equation of Synchronous Motor: V = E b + I a (R a + jX s MCQs: In case one phase of a three-phase synchronous motor is short-circuited the motor will? - Electrical Engineering Questions - Synchronous Motors Mcqs 6 Speed of a squirrel cage induction motor can be changed only by; 7 A 3-phase induction motor having synchronous speed of 1000 RPM develops 10 mechanical HP at an RPM of 950. If stator loss is 500 W then, What is stator input; 8 Rotor copper losses of a 3-phase induction motor running at some decimal slip s are mathematically expressed in the for

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MCQ on DC motor MCQ on Special MCQs on Electrical Circuit Theory Differences between synchronous motor and induction motor? Most important questions of DC generator MCQ on Measuring Instruments - 4. Categories. Electrical Articles (19) Electrical MCQ (75) Electrical Questions (11) Interviews Questions (7 30. In case one phase of a 3-phase synchronous motor is short-circuited the motor will (a) not start. (b) run at 2/3 of synchronous speed. (c) run with excessive vibrations. (d) take less than the rated load. [A.M.LE. Sec B. Elec. Machines Summer 1996 Synchronous motor finds application where operating speed is less (around 500 rpm) and high power is required. For power requirement from 35 kW to 2500 KW, the size, weight and cost of the corresponding three phase induction motor is very high. Hence these motors are preferably used

MCQs: Electrical Machines Test Questions - Mcqs Clouds is a portal which provide MCQ Questions for all competitive examination such as GK mcq question, competitive english mcq question, arithmetic aptitude mcq question, Data Intpretation, C and Java programing, Reasoning aptitude questions and answers with easy explanations Working Principle & Starting Methods Of Synchronous Motor - MCQs. Q1. If a three phase windings displaced in space by 120 degree in a synchronous motor then the magnitude of resultant flux when it is rotated by Θ = 0 degree and Θ = 60 degree is. a. 0, 1.5 times the magnitude of maximum flux. b. 1.5 times the magnitude of maximum flux, 0 Damper Windings: Damper windings helps the synchronous motor to start on its own (self-starting machine) by providing starting torque. By providing damper windings in the rotor of synchronous motor Hunting of machine can be suppressed. The performance characteristics of a synchronous motor are obtained by v-curves and inverted v-curves MCQs: What will be the per unit impedance of a synchronous motor having a rating of 100 kVA, 13.2 kV and having a reactance of 75 Ω / ph? - (A) 0.043 pu - (B) 0.057 p A synchronous condenser is not a static compensation. A synchronous condenser is a synchronous motor running at no load and taking leading current. A synchronous condenser is an overexcited synchronous motor, which draws leading currents from the system and hence compensates for lagging vars Induction motor is one of the most popular motors in the electrical industry. Due to its rugged and reliable operations, it is widely employed for various processes and industries. Unlike the synchronous motor, it doesn't need a separate dc field for excitation purposes. Given below are the top 10 Induction Motor MCQs with answers and [