Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
A 1200-V, 4-pole, de motor with 24 current paths, 200 coils and 50 turns per coil is rotating at 1000 rpm. Assume the total flux per pole is 0.02 Wb. and rotor circuit resistance is 1.8 Ohm. a) Find the voltage induced at its terminals. b) Find the current of the motor when it is connected to its rated voltage. Assume the brush voltage drop is 28 V. c) Find the induced torque in the motor. d) Find the input electrical power supplied by the source. e) Find the electrical power delivered to the motor. f) If the core losses and mechanical losses are 3.2 kW, find the power delivered to the load. g) Find the motor efficiency (ignore the field losses). The de machine of Problem 1 is now rotating at 1200 rpm. a) Is it operating as a motor or generator? Find the induced voltage. b) Find the armature current assuming the same brush voltage drop. c) Find the induced torque. d) Find the machine efficiency assuming the same mechanical losses as Problem 1.

A 1200-V, 4-pole, de motor with 24 current paths, 200 coils and 50 turns per coil is rotating at 1000 rpm. Assume the total flux per pole is 0.02 Wb. and rotor circuit resistance is 1.8 Ohm. a) Find the voltage induced at its terminals. b) Find the current of the motor when it is connected to its rated voltage. Assume the brush voltage drop is 28 V. c) Find the induced torque in the motor. d) Find the input electrical power supplied by the source. e) Find the electrical power delivered to the motor. f) If the core losses and mechanical losses are 3.2 kW, find the power delivered to the load. g) Find the motor efficiency (ignore the field losses). The de machine of Problem 1 is now rotating at 1200 rpm. a) Is it operating as a motor or generator? Find the induced voltage. b) Find the armature current assuming the same brush voltage drop. c) Find the induced torque. d) Find the machine efficiency assuming the same mechanical losses as Problem 1.

Introductory Circuit Analysis (13th Edition)
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...
See similar textbooks
icon
Related questions
Question
A 1200-V, 4-pole, de motor with 24 current paths, 200 coils and 50 turns per coil is rotating at 1000 rpm. Assume the total flux per pole is 0.02 Wb. and rotor circuit resistance is 1.8 Ohm. a) Find the voltage induced at its terminals. b) Find the current of the motor when it is connected to its rated voltage. Assume the brush voltage drop is 28 V. c) Find the induced torque in the motor. d) Find the input electrical power supplied by the source. e) Find the electrical power delivered to the motor. f) If the core losses and mechanical losses are 3.2 kW, find the power delivered to the load. g) Find the motor efficiency (ignore the field losses).
Transcribed Image Text:A 1200-V, 4-pole, de motor with 24 current paths, 200 coils and 50 turns per coil is rotating at 1000 rpm. Assume the total flux per pole is 0.02 Wb. and rotor circuit resistance is 1.8 Ohm. a) Find the voltage induced at its terminals. b) Find the current of the motor when it is connected to its rated voltage. Assume the brush voltage drop is 28 V. c) Find the induced torque in the motor. d) Find the input electrical power supplied by the source. e) Find the electrical power delivered to the motor. f) If the core losses and mechanical losses are 3.2 kW, find the power delivered to the load. g) Find the motor efficiency (ignore the field losses).
The de machine of Problem 1 is now rotating at 1200 rpm. a) Is it operating as a motor or generator? Find the induced voltage. b) Find the armature current assuming the same brush voltage drop. c) Find the induced torque. d) Find the machine efficiency assuming the same mechanical losses as Problem 1.
Transcribed Image Text:The de machine of Problem 1 is now rotating at 1200 rpm. a) Is it operating as a motor or generator? Find the induced voltage. b) Find the armature current assuming the same brush voltage drop. c) Find the induced torque. d) Find the machine efficiency assuming the same mechanical losses as Problem 1.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 5 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS