Question

Example 34.4. A 3-$\phi$ induction motor is wound for 4 poles and is supplied from 50-Hz system. Calculate (i) the synchronous speed (ii) the rotor speed, when slip is 4% and (iii) rotor frequency when rotor runs at 600 rpm. (Electrical Engineering-1, Pune Univ. 1991) Solution. (i) $N_s = 120f/P = 120 \times 50/4 = 1500$ rpm (ii) rotor speed, $N = N_s(1-s) = 1500(1-0.04) = 1440$ rpm

Name: example 344 a 3 phi induction motor is wound for 4 poles and is supplied from 50 hz system calculate i the synchronous speed ii the rotor speed when slip is 4 and iii rotor frequency when ro 81535
Uploaded: 2023-09-11T20:25:57-08:00
Duration: 1 min 10 s
Channel: Adi S
Description: example 344 a 3 phi induction motor is wound for 4 poles and is supplied from 50 hz system calculate i the synchronous speed ii the rotor speed when slip is 4 and iii rotor frequency when ro 81535

          Example 34.4. A 3-$\phi$ induction motor is wound for 4 poles and is supplied from 50-Hz system.
Calculate (i) the synchronous speed (ii) the rotor speed, when slip is 4% and (iii) rotor frequency
when rotor runs at 600 rpm.
(Electrical Engineering-1, Pune Univ. 1991)
Solution. (i)
$N_s = 120f/P = 120 \times 50/4 = 1500$ rpm
(ii) rotor speed,
$N = N_s(1-s) = 1500(1-0.04) = 1440$ rpm

example 344 a 3 phi induction motor is wound for 4 poles and is supplied from 50 hz system calculate i the synchronous speed ii the rotor speed when slip is 4 and iii rotor frequency when ro 81535

Added by Josefa K.

University Physics with Modern Physics

Hugh D. Young 14th Edition

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Solved by Expert Adi S

09/11/2023

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Therefore, the synchronous speed is: $N_s = 120 \times 50/4 = 1500$ rpm Show more…

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Example 34.4. A 3-$\phi$ induction motor is wound for 4 poles and is supplied from 50-Hz system. Calculate (i) the synchronous speed (ii) the rotor speed, when slip is 4% and (iii) rotor frequency when rotor runs at 600 rpm. (Electrical Engineering-1, Pune Univ. 1991) Solution. (i) $N_s = 120f/P = 120 \times 50/4 = 1500$ rpm (ii) rotor speed, $N = N_s(1-s) = 1500(1-0.04) = 1440$ rpm