Due to this an induction motor is sometimes referred to as an asynchronous machine. Most important mcq or objective questions on induction motor are discussed in this page.
Three Phase Induction Motor Interview Questions Answers
Electrical Engineering Interview Questions
Three Phase Induction Motor Interview Questions Answers
Basic interview questions on induction motors.
Three phase induction motor interview questions. A three phase induction motor consists of three phase winding as its stationary part called stator. Dear readers welcome to 3 phase induction 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 3 phase induction motor. The stator carries a 3 phase winding called stator winding while the rotor carries a short circuited winding called rotor winding.
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. Based on type of phase supply. What is the three phase induction motor working principle.
Three phase induction motor interview questions 2 why the exciting current of induction motor is so high as compared to the power transformer. When the 3 phase stator windings are fed by 3 phase supply a magnetic flux of constant magnitude which is rotating at synchronous speed is set up. What are the advantages and disadvantages of induction motors.
Three phase induction motor self starting in nature single phase induction motor not self starting other. Unlike that of a power transformer the magnetic circuit of the induction motor has an air gap. When the rotor of 3 phase induction motor run at synchronous speed its rotor frequency will become.
Only the stator winding is fed from 3 phase supply. The three phase stator winding is connected in star or delta. These mcqs are popular and regularly asked.
Like any electric motor a 3 phase induction motor has a stator and rotor. This is shown in the fig. How many types of induction motor.
Or why does the rotor rotate. Induction motor interview questions 1. The windings are supplied by a balanced three phase ac.
The three phase windings are displaced from each other by 120 o. Q how does the induction motor work. It is simple and rugged in construction it is relatively cheap induction motors require less maintenance induction motor has high efficiency and reasonably good power factor 3 phase induction machines are self starting disadvantages.
Power electronics interview questions. How does the induction motor work. Or why does the rotor rotate.
The rotor winding derives its voltage and power from the externally. Best 3 phase induction motor interview questions and answers. When the 3 phase stator windings are fed by 3 phase supply a magnetic flux of constant magnitude which is rotating at synchronous speed is set up.
Induction motors are essentially a constant speed.
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