Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >  Which of the statements is/are correct regard... Start Learning for Free
Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?
1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.
2. The resultant flux of constant magnitude is produced in the air gap of the motor.
3. Frequency of rotating magnetic field is not the same as that of the supply frequency
  • a)
    1, 2 & 3
  • b)
    1
  • c)
    1 & 2
  • d)
    2
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the statements is/are correct regarding rotating magnetic fie...
Concept:
  • If a balanced three-phase voltage is supplied to balanced three-phase windings in the stator of an Induction motor, the resultant flux remains constant in magnitude but rotates at the synchronous speed.
  • Synchronous speed is related to the supply frequency and number of poles, for which the winding (stator) has been designed. This is termed as a rotating magnetic field formed in the air gap of the motor.

Where Ns = Synchronous speed in rpm
f = Supply frequency
P = Number of poles
  • The direction of rotation of resultant flux in the air gap depends upon phase sequence. It rotates from the leading phase to the lagging phase.
  • Frequency of rotating magnetic field is same as that of the supply frequency, while rotor frequency is slip times of supply frequency. 
Free Test
Community Answer
Which of the statements is/are correct regarding rotating magnetic fie...
Concept:
  • If a balanced three-phase voltage is supplied to balanced three-phase windings in the stator of an Induction motor, the resultant flux remains constant in magnitude but rotates at the synchronous speed.
  • Synchronous speed is related to the supply frequency and number of poles, for which the winding (stator) has been designed. This is termed as a rotating magnetic field formed in the air gap of the motor.

Where Ns = Synchronous speed in rpm
f = Supply frequency
P = Number of poles
  • The direction of rotation of resultant flux in the air gap depends upon phase sequence. It rotates from the leading phase to the lagging phase.
  • Frequency of rotating magnetic field is same as that of the supply frequency, while rotor frequency is slip times of supply frequency. 
Explore Courses for Electrical Engineering (EE) exam

Similar Electrical Engineering (EE) Doubts

Top Courses for Electrical Engineering (EE)

Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer?
Question Description
Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer?.
Solutions for Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Which of the statements is/are correct regarding rotating magnetic field production in a 3-phase induction machine?1. The direction of rotation of resultant flux in the air gap depends upon phase sequence.2. The resultant flux of constant magnitude is produced in the air gap of the motor.3. Frequency of rotating magnetic field is not the same as that of the supply frequencya)1, 2 & 3b)1c)1 & 2d)2Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev