Problem 1. A 230-V shunt motor delivers 30 hp at the shaft at 1120 rpm. If the motor has an efficiency of 87% at this load, determine (a) the total input power and (b) the line current. (c) If the torque lost due to friction and windage is 7% of the shaft torque, calculate the developed torque. what Problem 2. A motor is supplying 70 N-m of torque to its load. If the motor shaft is turning at 1,500 rpm, is the mechanical power to the load in watts?
Problem 1. A 230-V shunt motor delivers 30 hp at the shaft at 1120 rpm. If the motor has an efficiency of 87% at this load, determine (a) the total input power and (b) the line current. (c) If the torque lost due to friction and windage is 7% of the shaft torque, calculate the developed torque. what Problem 2. A motor is supplying 70 N-m of torque to its load. If the motor shaft is turning at 1,500 rpm, is the mechanical power to the load in watts?
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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![Problem 1. A 230-V shunt motor delivers 30 hp at the shaft at 1120 rpm. If the motor has an efficiency of 87%
at this load, determine (a) the total input power and (b) the line current. (c) If the torque lost due to friction and
windage is 7% of the shaft torque, calculate the developed torque.
Problem 2. A motor is supplying 70 N-m of torque to its load. If the motor shaft is turning at 1,500 rpm, what
is the mechanical power to the load in watts?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc6544ace-b869-47a7-ae0c-b24a40f2d73f%2F16b2b774-2dbf-420f-a716-2211320ae9ef%2F668daqj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Problem 1. A 230-V shunt motor delivers 30 hp at the shaft at 1120 rpm. If the motor has an efficiency of 87%
at this load, determine (a) the total input power and (b) the line current. (c) If the torque lost due to friction and
windage is 7% of the shaft torque, calculate the developed torque.
Problem 2. A motor is supplying 70 N-m of torque to its load. If the motor shaft is turning at 1,500 rpm, what
is the mechanical power to the load in watts?
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