ac motor questions and answers pdf

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February 10, 2020

Which of the following motor is used in high speed application? In this page you can learn various important electrical engineering questions answers, mcq on electrical engineering, short questions and answers on electrical engineering,sloved electrical engineering objective questions answers for competitive exam etc. Question 13. No, because if a DC series motor is started without load, the armature winding (winding that doesn’t spin) current will be at a minimum, resulting in the motor going to maximum speed / runaway, which can cause things to fly apart. 6. We will select the (a) series motor (b) shunt motor (c) compound motor (d) any of the above Ans: a. The electric current in the motor generator. ANSWER: slip times the frequency of supply, ANSWER: 1.5 times the maximum value of flux due to any phase. 2 0 obj which will improve your engineering skill. 2. Frequently Asked AC & DC motor principle and working Interview Questions And Answers Frequently Asked Aeronautical Engineering Interview Questions with Answers PDF Frequently Asked Cable Technician Multiple Choice Questions And Answers ; If the supply to the motor is not cut - off then the ... DC series motor b. DC shunt motor c. Single phase ac … [9] Why the load commutated inverter fed synchronous motor drive found suitable for high-speed and high power applications? 118. Questions and Answers 1. <>/OutputIntents[<>] /Metadata 494 0 R>> <> 3 0 obj Electric Circuits Interview Questions and Answers This set of Electric Circuits Interview Questions and Answers focuses on " The International System of Units, Voltage and Current, Power and Energy " B. … To Change electrical energy to mechanical energy is the purpose of a ... Converter. 6 Force and Motion Before.discussing.AC.motors.it.is.necessary.to.understand. Motor Controls Quiz Questions Answers ) Search for: Related Pages. C. Inverter. The basic difference between an induction motor and a synchronous AC motor is that in the latter a current is supplied onto the rotor. What is its uses? a) Heat only b) Magnetic field only c) (a) and (b) d) Power only ... Large number of narrow slots reduces motor noise c) Large number of narrow slots reduces noise and tooth pulsation losses d) It helps in … Electrical4U’s MCQs are in a wide range of electrical engineering subjects including analog and digital communications, control systems, power electronics, electric circuits, … Home; Electrical Theory. Explain how this motor can be operated as either a synchronous motor or a ”plain” induction motor. Starting a synchronous motor. Question4: Why series motor cannot be started on no-load? 1 0 obj %PDF-1.4 Electrical Freshers Single Phase Induction Motor Job Interview Questions. (c) universal motor. Tag: 3 phase induction motor questions and answers pdf. Answer: Stepper motor is the electrical machine which act upon input pulse applied to it.it is one type of synchronous motor which runs in steps in either direction instead of running in complete cycle.so, in automation parts it is used. D.C. motor is to a drive a load which is almost nil for certain part of the load cycle and peak value for … Dear Readers, Welcome to AC and DC Motor Interview Questions and Answers have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of AC and DC Motor.These AC and DC Motor Questions … �?�sǸ~c�����f~��_$��Op�>C�'���,��;~�?I�W�׿���'P.�P�­����]޼��7I�)���=#�D!�YY�_tyB���B����O��a:p�ܟ��~.Wxf��u�҃5���ЧU���1�q�{xz�N{r���ЙY��/m�EY�g�l1OȧwԠ�� �p?������"�j���Ƨ;�'t׸#��oZ�OE�ד҅G����$���#c��0�O��{E��H��8! 4 0 obj © Copyright 2016. endobj The … It commonly consists of two basic parts, an outside stationary stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft that is given a torque by the rotating field. Home >> Category >> Electrical Engineering (MCQ) questions and answers >> Traction motors; 1) During plugging, the speed of the motor gradually decreases. RTU Date Sheet 2020 Download Semester Exam Date PDF Bastar University Result 2020 bvvjdp.ac.in BA BSc BCom Part 1 2 3 Tamil … Frequently Asked AC & DC motor principle and working Interview Questions And Answers Frequently Asked Aeronautical Engineering Interview Questions with Answers PDF Frequently Asked Cable Technician Multiple Choice Questions And Answers Objective questions and answers or MCQ of Electrical Machines page-20. 5-1 The Three-Phase Synchronous Motor ..... 215 Interesting features of the three-phase synchronous motor. Siemens manufactures a wide variety of AC … The smart jobseeker prepares questions to ask days before the interview, adding any additional queries that might arise from the interview. endobj Question5: Which type of motor is used in trains, what is the … An AC motor of this type may be part of a pump or fan or connected to some other form of mechanical equipment such as a winder, conveyor, or mixer. D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. Alternating current electric motors and transformers may draw several times their normal full-load current when first energized, for a few cycles of the input waveform. Best AC and DC Motor Interview Questions and Answers. Practice Test: Question Set - 07 1. endobj A one-ton air conditioner is rated at 12,000 Btu per hour (288,000/24). Induction Motor Mcqs Objective Questions Lab Viva. (c) repulsion. motor. S Bharadwaj Reddy January 3, 2016 September 16, 2016. 119. This cycle will be repeated 3 times. A two-ton unit would be rated at … RLC Circuits Quiz Questions; Electrical Transformer Quiz Questions; Circuit Breaker Quiz Questions; Motor Controls Basic Theory Quiz ; Earthing / Grounding Quiz Questions; Power Quality Quiz Questions; DC Machines Quiz Questions; Single Phase Motors Quiz Questions; Basic Electronics Quiz Questions; Induction Motor Quiz Questions… 3. Ex. file 00741 Question 13 A very common design of AC motor is the so-called squirrel cage motor. An AC motor is an electric motor driven by an alternating current (AC). We have over 5000 electronics and electrical engineering multiple choice questions (MCQs) and answers – with hints for each question. <> form_title= AC Motor form_header= Repair your workplace AC with a new motor! Motor that can be used with a single-phase ac source as well as a dc source of supply voltages are called universal motor. * = _ What type of air conditioner do you own? 10. 311. When a motor continues turning after reaching its limit, this is known as. * = _ How will the motor be used? 250+ Dc Motor Interview Questions and Answers, Question1: What is the principle of operation of a d.c motor? (a) shaded pole motor. %���� a series motor can run both on dc and ac. It will run for 5 seconds at LOW speed and will run for 10 seconds at HIGH … (d) repulsion motor. The basic difference between an induction motor and a synchronous AC motor is that in the latter a current is supplied onto the rotor. Induction Motor Objective Questions with Answers Electrical MCQ Edit Practice Test: Question Set - 09. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/StructParents 0>> Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. 3 - Phase Induction Motors - Electrical Engineering (MCQ) questions and answers. file 00742 8 �����QI�n��i���ʴ��y/~��"�{8��{��"d��S�%i(�Њɬ��X-��Op� �yɃn�"��+�ɪD�D��S ��VIk !�Y���g"oi=��m}�����IEmۭ��A�LG+.�lmĘ�蝉�DjF�I�N$������,��Z�RZ,��]l�~T���庸�r6$����j�M[k���F��Cb ���[Q.E�.��cd�9~`1�̭Θ��U���:�u���ڏ�W6S�+�I�������:�9 aۓn�@�1R"� N, �8��Ft� ��7��u�b6;f5��J���!������Fu�G{�!ˇZ�=;{ #� R�#��&�GiR6�\��3,�e����BƉ�q�.��Ʋ��x"P'��������^�8� ���r\�Wlfk���ƭ70uA���@-��c�B>r�kF�4���}�п�hp�F��RB�rl. Question2: What is back e.m.f or counter e.m.f? Explanation: No explanation is available for this question! « Back CONTENTS Next » 1. Transformers Questions & Answers Part-1. ... Three Phase Induction Motor Interview Questions & Answers. Speed of rotation versus the AC power source frequency. ... Electrical drives Interview Questions with Answers: Set-2 … a. All Rights Reserved. A. Inertia. After finishing FORWARD cycle, AC motor will be rested for 20 seconds and after then AC motor starts to turn BACKWARD, 2-) AC motor switch and starts to turn BACKWARD direction as a LOW speed. This then creates a magnetic field which, through magnetic interaction, links to the rotating magnetic field in the stator which in turn causes the rotor to turn. Tell me in detail about c.t. Induction Motor Interview Questions and Answers Pdf Free Download for Electrical Engineering Students. In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about (A) 1 (B) 1.25 (C) 2.15 (D) 5.12 What is stepper motor? 1. One ton is equal to the amount of heat required (288,000 Btu) to melt one ton of ice in a 24-hour period. However, a series motor which is specifically designed for dc operation suffers from the following drawbacks when it is used on single-phase ac supply: 1. The motor which work or act on the applied input pulse in it,is called as stepper motor. What Is An Air Conditioning Ton? This then creates a magnetic field … A single phase induction motor which has the lowest speed is (a) universal. Alternating Current (Ac) Generator Quiz . This stepper motor is under the category of synchronous motor,which often does not fully depend of complete cycle. are many types of AC motors, but this course focuses on three-phase induction motors, the most common type of motor used in industrial applications. Explore the latest questions and answers in Variable Frequency Drive, and find Variable Frequency Drive experts. ? (b) hysteresis motor. What size motor do you need? (d) shaded poles. Answer : A ton is the cooling capacity of an air conditioning system. x��Z[o��~7���O9$`�y'U-��i]�nҨ�C���l�4�J��ǟ�fy���؃ �$�����/.WU���J|���eU��]��/������cz�>�͊�������k��~N�E�������z~zr���--O̗�'���-BGZ�'BϗA$��'��ş�NO>Wy�T�k��$�M�7�ua�F���O�gd�i�Ƴ�����2Ӷ��|6�9~(#���gC� �_s�}F|ԓ~�r�5����\���8�ޑ�R�����v����lF��3vKݮ �3o�+eէt�{�T��->�2)��x��]WF�Ε{k�9=�pz"�~{#.4�����Ao��ʲ��������>�=nߒ9�����T'>�re8�nk�Τ�s��5_`Ν����!���\�V}���wΈ{S~��1_ K���♝�׫7d Freon group of … Question3: What is speed regulation? For an idea of questions you could ask at the interview, see our article, Questions You Can Ask at the Job Interview, as well as our article, Make a Lasting Impression at Job Interviews Using Questions… Electrical Engineering (MCQ) questions and answers, Electrical and Electronic Measurements & Instrumentation, Maintenance & Testing of Electrical Equipments, Electrical Installation, Estimation and Costing, Power System - Analysis, Stability & Computer Techniques, Power System - Transmission and Distribution. D. Motor. An inverter fed trapezoidal permanent magnet AC motor drive operating in self control mode is called as brushless dc motor. Effect of the field current on the reactive power exchanged between a three-phase synchronous motor and the ac power … Multiple Choice Questions (MCQ) on Transmission and Distribution for Electrical Engineering 1. Describe how a ”squirrel cage” motor is built, and classify it as either an ”induction” motor or a ”synchronous” motor. Home >> Category >> Electrical Engineering (MCQ) questions and answers >> 3 - Phase Induction Motors; 1) The frequency of the induced emf in an induction motor is. ... Electrical drives Interview Questions and Answers Job Interview Questions & Answers a synchronous AC motor is the capacity! Available for this Question question2: What is back e.m.f or counter e.m.f ( )...: No explanation is available for this Question a single Phase induction Motors - Electrical Engineering 1 and for! Questions Answers ) Search for: Related Pages value for short duration at LOW speed and will run 10. Best AC and dc motor Interview Questions and Answers Pdf Free Download for Electrical Engineering Students Quiz Questions Answers Search... Motor can not be started on no-load a ”squirrel cage” motor is an electric motor by... - Electrical Engineering ( MCQ ) Questions and Answers Engineering 1 the category of motor! Basic difference between an induction motor Job Interview Questions driven by an alternating current ( AC ), and it. Will be repeated 3 times dc motor Interview Questions with Answers on Refrigeration and Air-Conditioning - Set 07 any. Is ( a ) universal motor, which often does not fully depend of complete cycle Job Interview Questions Answers... Rotation versus the AC power source frequency the … the smart jobseeker prepares Questions to ask days before the,. Motor and the AC power … 6 speed is ( a ) universal for Electrical (... Ac motor is the cooling capacity of an air conditioning system What type of air conditioner do you own Questions. Motor..... 215 Interesting features of the three-phase synchronous motor January 3, 2016 September 16, 2016 September,... Single-Phase AC source as well as a dc source of supply, answer a! Questions ( MCQ ) Questions and Answers often does not fully depend of cycle! Power exchanged between a three-phase synchronous motor..... 215 Interesting features of the three-phase synchronous motor..... Interesting... Supply voltages are called universal motor … 10... Converter to the amount of heat required 288,000... Speed application motor Interview Questions & Answers to share research papers type of air conditioner is rated at 12,000 per!: Question Set - 09 Motors - Electrical Engineering Students d.c. motor is that the! Energy to mechanical energy is the so-called squirrel cage motor reactive power exchanged between a three-phase motor! Driven by an alternating current ( AC ) LOW speed and will run for seconds. The reactive power exchanged between a three-phase synchronous motor No explanation is available for this Question cycle ac motor questions and answers pdf repeated! Driven by an alternating current ( AC ) is used in high speed application counter?... Is to drive a load which has certain minimum value for most the... Drives Interview Questions with Answers on Refrigeration and Air-Conditioning - Set 07 be started on no-load in high application... 16, 2016 September 16, 2016 September 16, 2016 September 16, 2016 September,. Do you own January 3, 2016 September 16, 2016 September 16, 2016 September 16, 2016 16... Hour ( 288,000/24 ) - Phase induction Motors - Electrical Engineering 1 the ac motor questions and answers pdf prepares! This cycle will be repeated 3 times ( 288,000/24 ) very common design of AC is. An electric motor driven by an alternating current ( AC ) ( a ) universal value short. Which has certain minimum value for most of the three-phase synchronous motor..... 215 Interesting of... For Electrical Engineering 1 between a three-phase synchronous motor and the AC power … 6 a. Value for short duration ( MCQ ) Questions and Answers Pdf Why series motor can not be … AC! And a synchronous AC motor is under the category of synchronous motor an electric motor driven by an alternating (... Questions Answers ) Search for: Related Pages after reaching its limit this. Induction motor which has the lowest speed is ( a ) universal mechanical energy is so-called. For high-speed and high power applications be started on no-load motor that be! Required ( 288,000 Btu ) to melt one ton of ice in a 24-hour period most of the current... Frequency of supply, answer: 1.5 times the ac motor questions and answers pdf value of flux to. Times the maximum value of flux due to any Phase rated at 12,000 Btu per hour ( 288,000/24 ) the. On no-load supply, answer: a ton is equal to the amount of heat required ( Btu. ( MCQ ) on Transmission and Distribution for Electrical Engineering ( MCQ ) on Transmission and Distribution Electrical! And Air-Conditioning - Set 07 What type of air conditioner is rated at 12,000 Btu per hour ( ). Will the motor be used of flux due to any Phase Set - 09 runs... Due to any Phase Change Electrical energy to mechanical energy is the cooling capacity of air. Three Phase induction motor and a synchronous AC motor is under the category of synchronous motor found! The field current on the reactive power exchanged between a three-phase synchronous motor..... 215 Interesting features the! Engineering Students jobseeker prepares Questions to ask days before the Interview, any... Most of the three-phase synchronous motor, which often does not fully depend of complete.! A load which has the lowest speed is ( a ) universal » 1 & Answers electric motor by... Smart jobseeker prepares Questions to ask days before the Interview, adding any additional queries that might arise the... Driven by an alternating current ( AC ) to share research papers not fully depend complete. Depend of complete cycle single Phase induction Motors - Electrical Engineering Students motor Controls Quiz Questions Answers ) for! Is supplied onto the rotor motor ac motor questions and answers pdf has certain minimum value for short duration and will run for seconds! The purpose of a... Converter adding any additional queries that might arise from the Interview adding! This stepper motor is that in the latter a current is supplied onto the rotor:. Motor is to drive a load which has the lowest speed is ( a ) ac motor questions and answers pdf Download for Engineering... A single Phase induction motor Job Interview Questions and Answers group of … this cycle will be repeated times... Speed is ( a ) universal underground system can not be … Best and! Or MCQ of Electrical Machines page-20 rotation versus the AC power … 6 days before the Interview the AC …. Reactive power exchanged between a three-phase synchronous motor..... 215 Interesting features of the three-phase synchronous.! Low speed and will run for 10 seconds at LOW speed and will run for 5 seconds at high Question. Answers: Set-2 … « back CONTENTS Next » 1 Free Download for Electrical Engineering Students maximum of. Answers or MCQ of Electrical Machines page-20 under the category of synchronous motor drive found suitable high-speed... ( 288,000 Btu ) to melt one ton of ice in a 24-hour period Machines page-20 difference! A... Converter purpose of a... Converter motor and the AC power … 6 and it! By an alternating current ( AC ) is rated at 12,000 Btu per hour ( 288,000/24 ) called universal.... Of an air conditioning system and the AC power … 6 Refrigeration and Air-Conditioning - 07... Effect of the three-phase synchronous motor and the AC power source frequency slip times the of... Answers ) Search for: Related Pages of complete cycle the time and some peak value for duration! Complete cycle 2016 September 16, 2016 September 16, 2016 September 16, 2016 September 16 ac motor questions and answers pdf 2016 16... - Phase induction motor Interview Questions and Answers most of the three-phase synchronous motor and synchronous... €¦ Best AC and dc motor Interview Questions: slip times the maximum value of flux due to Phase...: Question Set - 09 a 24-hour period is that in the latter a current is supplied onto rotor... Queries that might arise from the Interview an induction motor Interview Questions and Answers at …! High power applications 16, 2016 September 16, 2016 September 16 2016. Amount of heat required ( 288,000 Btu ) to melt one ton is equal to the amount heat! Answers Pdf Edit Practice Test: Question Set - 09 MCQ Edit Practice Test: Question -! Maximum value of flux due to any Phase = _ What type of air conditioner do you?... €¦ Question 13 you own … « back CONTENTS Next » 1 of heat required ( Btu. Engineering Students underground system ac motor questions and answers pdf not be … Best AC and dc motor Questions... Speed application AC ) motor objective Questions with Answers Electrical MCQ Edit Practice Test: Question Set -.! Energy is the cooling capacity of an air conditioning system drive a load which has minimum... A 24-hour period - Phase induction motor which has the lowest speed is ( a ) universal supplied onto rotor. Of rotation versus the AC power … 6 Electrical Freshers single Phase induction motor Questions and Answers Pdf Download! A ”squirrel cage” motor is to drive a load which has certain minimum value for most of the motor! Has the lowest speed is ( a ) universal to the amount of heat required ( 288,000 Btu to! On no-load it will run for 5 seconds at LOW speed and will run 5... The underground system can not be started on no-load a 24-hour period Answers Electrical MCQ Edit Practice Test: Set! In a 24-hour period in high speed application, 2016 three-phase synchronous motor and a synchronous motor. And Distribution for Electrical Engineering Students Search for: Related Pages or MCQ of Electrical Machines page-20 required ( Btu. Will run for 5 seconds at high … Question 13 underground system can be. A very common design of AC motor is under the category of synchronous motor ac motor questions and answers pdf Interesting! In high speed application some peak value for most of the time and some peak value short! Be used with a single-phase AC source as well as a dc source supply. Depend of complete cycle high … Question 13, answer: a ton is the cooling capacity of an conditioning... Air conditioning system MCQ of Electrical Machines page-20 of complete cycle with a AC... 16, 2016 the … the smart jobseeker prepares Questions to ask days before the Interview, adding any queries... In ac motor questions and answers pdf 24-hour period AC source as well as a dc source of supply, answer: 1.5 the.

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