SSE JE Electrical Engineering 29 Oct 2020 Shift 2 Papers

Question : 141 of 200

Marks: +1, -0

An Induction Motor is expected to run at 950 rpm at full load. With a power supply of 50 Hz. What could be the number of poles in the IM?

Solution:

Given that, the speed of the induction motor

(\N_\r)

= 950 rpm
The synchronous speed

(\N_\s)

= 1000 rpm
Frequency (f) = 50 Hz

\N _{ \S }={120 ×\f}/{ \P }

⇒1000={120 ×50}/{ \P }

⇒\P =6

Go to Question:

Prev Question

Next Question