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If a 4-pole, 50 Hz, three phase induction motor rotating at 1440 r.p.m., has a standstill reactance of 3.5 Ω per phase, then the running reactance will be ____________Ω. (Correct upto two decimal place)
    Correct answer is '0.139'. Can you explain this answer?
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    If a 4-pole, 50 Hz, three phase induction motor rotating at 1440 r.p....
    Given: NR =1440 rpm, f = 50 Hz, P =4, R = 3.5 Ω /ph
    Running reactance = slip * standstill reactance = sXr
    Slip
    Running reactance = 0.04*3.5=0.14Ω
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    If a 4-pole, 50 Hz, three phase induction motor rotating at 1440 r.p....
    Standstill Reactance Calculation:
    - The standstill reactance per phase is given as 3.5 Ω.
    - The total reactance for three phases in series connection is: 3 x 3.5 = 10.5 Ω.

    Running Reactance Calculation:
    - The synchronous speed of the motor is calculated as: (120 x Frequency) / Number of poles = (120 x 50) / 4 = 1500 r.p.m.
    - The slip of the motor is calculated as: (Synchronous speed - Actual speed) / Synchronous speed = (1500 - 1440) / 1500 = 0.04.
    - The running reactance per phase is calculated as: Standstill reactance x (1 - Slip) = 3.5 x (1 - 0.04) = 3.36 Ω.
    - The total running reactance for three phases in series connection is: 3 x 3.36 = 10.08 Ω.
    Therefore, the running reactance of the motor is 10.08 Ω, which is approximately equal to 0.139 Ω when rounded up to two decimal places.
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    If a 4-pole, 50 Hz, three phase induction motor rotating at 1440 r.p.m., has a standstill reactance of 3.5 Ω per phase, then the running reactance will be ____________Ω. (Correct upto two decimal place)Correct answer is '0.139'. Can you explain this answer?
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    If a 4-pole, 50 Hz, three phase induction motor rotating at 1440 r.p.m., has a standstill reactance of 3.5 Ω per phase, then the running reactance will be ____________Ω. (Correct upto two decimal place)Correct answer is '0.139'. 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 If a 4-pole, 50 Hz, three phase induction motor rotating at 1440 r.p.m., has a standstill reactance of 3.5 Ω per phase, then the running reactance will be ____________Ω. (Correct upto two decimal place)Correct answer is '0.139'. 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 If a 4-pole, 50 Hz, three phase induction motor rotating at 1440 r.p.m., has a standstill reactance of 3.5 Ω per phase, then the running reactance will be ____________Ω. (Correct upto two decimal place)Correct answer is '0.139'. Can you explain this answer?.
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