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The synchronous of a three-phase induction motor having 20 poles and connected to a 50 Hz source is-
- a)1200 rpm
- b)300 rpm
- c)600 rpm
- d)1000 rpm
Correct answer is option 'B'. Can you explain this answer?
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The synchronous of a three-phase induction motor having 20 poles and ...
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The synchronous of a three-phase induction motor having 20 poles and ...
Explanation:
The synchronous speed of a three-phase induction motor is given by the formula:
Synchronous Speed (Ns) = (120 * Frequency) / Number of Poles
Given:
Frequency (f) = 50 Hz
Number of Poles (p) = 20
Using the formula, we can calculate the synchronous speed as follows:
Ns = (120 * 50) / 20
Ns = 6000 / 20
Ns = 300 rpm
Therefore, the synchronous speed of the three-phase induction motor is 300 rpm.
Summary:
- The synchronous speed of a three-phase induction motor can be calculated using the formula: Ns = (120 * f) / p, where f is the frequency and p is the number of poles.
- In this case, the frequency is 50 Hz and the number of poles is 20.
- Substituting these values into the formula, we find that the synchronous speed is 300 rpm.
The synchronous speed of a three-phase induction motor is given by the formula:
Synchronous Speed (Ns) = (120 * Frequency) / Number of Poles
Given:
Frequency (f) = 50 Hz
Number of Poles (p) = 20
Using the formula, we can calculate the synchronous speed as follows:
Ns = (120 * 50) / 20
Ns = 6000 / 20
Ns = 300 rpm
Therefore, the synchronous speed of the three-phase induction motor is 300 rpm.
Summary:
- The synchronous speed of a three-phase induction motor can be calculated using the formula: Ns = (120 * f) / p, where f is the frequency and p is the number of poles.
- In this case, the frequency is 50 Hz and the number of poles is 20.
- Substituting these values into the formula, we find that the synchronous speed is 300 rpm.
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The synchronous of a three-phase induction motor having 20 poles and connected to a 50 Hz source is-a)1200 rpmb)300 rpmc)600 rpmd)1000 rpmCorrect answer is option 'B'. Can you explain this answer?
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