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A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:
- a)5 Hz, 50 Hz
- b)5 Hz, 55 Hz
- c)5 Hz, 95 Hz
- d)55 Hz, 95 Hz
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. T...
Given,
Number of poles (P) = 6
Frequency (f) = 50 Hz
Speed of the induction motor, Nr =900 rpm
Speed of the rotating magnetic field is,
Where Ns is the synchronous speed and Nr is the rotor speed.
The two rotor current frequencies are,
Rotor current frequency for forward slip (fr) = sf = 0.1×50 = 5 Hz
Rotor current frequency for backward slip (fr') = (2−s)fs= 1.9×50 = 95 Hz
Number of poles (P) = 6
Frequency (f) = 50 Hz
Speed of the induction motor, Nr =900 rpm
Speed of the rotating magnetic field is,
Where Ns is the synchronous speed and Nr is the rotor speed.
The two rotor current frequencies are,
Rotor current frequency for forward slip (fr) = sf = 0.1×50 = 5 Hz
Rotor current frequency for backward slip (fr') = (2−s)fs= 1.9×50 = 95 Hz
Most Upvoted Answer
A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. T...
Frequency Calculation:
- The synchronous speed of an induction motor is given by the formula: Ns = 120f / P
- Given that the motor has 6 poles and operates at 50 Hz, we can calculate the synchronous speed as: Ns = 120 * 50 / 6 = 1000 rpm
- The actual speed of the motor is 900 rpm, which means it is running at a slip of 100 rpm.
- The slip is given by: Slip = (Ns - N) / Ns = (1000 - 900) / 1000 = 0.1
- The frequency of currents in the cage rotor can be calculated using the slip formula: f = Slip * Supply Frequency
- Substituting the values, we get: f = 0.1 * 50 = 5 Hz
Final Calculation:
- The frequency of currents in the cage rotor is 5 Hz due to the slip in the motor operation.
- Therefore, the correct answer is option 'C' which states the frequency as 5 Hz, 95 Hz.
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A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer?
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A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer? for RRB NTPC/ASM/CA/TA 2025 is part of RRB NTPC/ASM/CA/TA preparation. The Question and answers have been prepared according to the RRB NTPC/ASM/CA/TA exam syllabus. Information about A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for RRB NTPC/ASM/CA/TA 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer?.
A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer? for RRB NTPC/ASM/CA/TA 2025 is part of RRB NTPC/ASM/CA/TA preparation. The Question and answers have been prepared according to the RRB NTPC/ASM/CA/TA exam syllabus. Information about A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for RRB NTPC/ASM/CA/TA 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer?.
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A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in the cage rotor will be:a)5 Hz, 50 Hzb)5 Hz, 55 Hzc)5 Hz, 95 Hzd)55 Hz, 95 HzCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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