Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >  A 6 pole slip ring induction motor operating ... Start Learning for Free
A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)
    Correct answer is '125'. Can you explain this answer?
    Verified Answer
    A 6 pole slip ring induction motor operating on 50 Hz supply is driven...
    General equation for the frequency of an induction frequency changer is
    +ve for opposite direction of rotation
    -ve for same direction of rotation
    1000 rpm
     = 125 Hz
    View all questions of this test
    Most Upvoted Answer
    A 6 pole slip ring induction motor operating on 50 Hz supply is driven...
    25 Hz.

    Explanation:

    The synchronous speed of a 6 pole induction motor operated on 50 Hz supply is:

    Ns = (120 x f) / P = (120 x 50) / 6 = 1000 rpm

    Since the motor is driven at 1500 rpm in the opposite direction, the actual speed of the rotor is:

    N = Ns - Nr = 1000 - 1500 = -500 rpm

    The slip of the motor is given by:

    s = (Ns - N) / Ns = (1000 + 500) / 1000 = 1.5

    The frequency generated by the slip ring is given by:

    f = s x fsupply = 1.5 x 50 = 75 Hz

    However, since the motor is operated in the opposite direction, the frequency generated is:

    f = fsupply - fslip = 50 - 75 = -25 Hz

    Since negative frequency is not physically possible, we take the absolute value:

    |f| = 25 Hz

    Therefore, the supply frequency generated by the slip ring motor is 25 Hz.
    Free Test
    Community Answer
    A 6 pole slip ring induction motor operating on 50 Hz supply is driven...
    Here Ns=120f/p
    Ns=(120*50)/6=1000rpm
    S=(Ns-Nr)/Nr=1000-(-1500)/1000=2.5
    fr=Sf2=2.5*50=125Hz
    Explore Courses for Electrical Engineering (EE) exam

    Top Courses for Electrical Engineering (EE)

    A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. Can you explain this answer?
    Question Description
    A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. 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 A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. 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 A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. Can you explain this answer?.
    Solutions for A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. 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 A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. Can you explain this answer?, a detailed solution for A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. Can you explain this answer? has been provided alongside types of A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A 6 pole slip ring induction motor operating on 50 Hz supply is driven by a variable speed prime mover as a frequency changer. If it is operated at 1500 rpm is opposite direction then the supply frequency generated is – (in Hz)Correct answer is '125'. 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