Question

A 4-pole, 230 V series motor runs at 1000 r.p.m., when the load current is 12 A. The series field resistance is 0.8 ? and the armature resistance is 1.0 ?. The series field coils are now regrouped from all in series to two parallel paths each of 0.4 ?. The line current is now 20 A. If the corresponding weakening of field is 15%, calculate the speed of the motor.

Name: A 4-pole, 230 V series motor runs at 1000 r.p.m., when the load current is 12 A. The series field resistance is 0.8 ? and the armature resistance is 1.0 ?. The series field coils are now regrouped from all in series to two parallel paths each of 0.4 ?. The line current is now 20 A. If the corresponding weakening of field is 15%, calculate the speed of the motor.
Uploaded: 2023-05-11T03:33:44-08:00
Duration: 3 min 36 s
Channel: Madhur L
Description: A 4-pole, 230 V series motor runs at 1000 r.p.m., when the load current is 12 A. The series field resistance is 0.8 ? and the armature resistance is 1.0 ?. The series field coils are now regrouped from all in series to two parallel paths each of 0.4 ?. The line current is now 20 A. If the corresponding weakening of field is 15%, calculate the speed of the motor.

          A 4-pole, 230 V series motor runs at 1000 r.p.m., when the load current is 12 A. The series field resistance is 0.8 ? and the armature resistance is 1.0 ?. The series field coils are now regrouped from all in series to two parallel paths each of 0.4 ?. The line current is now 20 A. If the corresponding weakening of field is 15%, calculate the speed of the motor.

A 4-pole, 230 V series motor runs at 1000 r.p.m., when the load current is 12 A. The series field resistance is 0.8 ? and the armature resistance is 1.0 ?. The series field coils are now regrouped from all in series to two parallel paths each of 0.4 ?. The line current is now 20 A. If the corresponding weakening of field is 15%, calculate the speed of the motor.

Added by David K.

Electrical Engineering: Principles and Applications

Allan R. Hambley 5th Edition

Chapter 16

Instant Answer

Solved by Expert Madhur L

05/11/2023

Step 1

4) Show more…

Show all steps

Thanks for your feedback!

A 4-pole, 230 V series motor runs at 1000 r.p.m., when the load current is 12 A. The series field resistance is 0.8 ̐ and the armature resistance is 1.0 ̐. The series field coils are now regrouped from all in series to two parallel paths each of 0.4 ̐. The line current is now 20 A. If the corresponding weakening of field is 15%, calculate the speed of the motor.