A 230 V dc machine has an emf constantand . The field is separatelyexcited and produces 0.01 Wb per pole. for all parts ofthe problem. (a) At what speed does the machine operate as adc generator with rated terminal voltage? (b) At what speeddoes the machine operate as a dc motor with rated terminalvoltage? (c) If an external resistance is added in serieswith the armature circuit, at what speed does the machineoperate as a dc motor with rated terminal voltage? (d) If themotor of part (b) is known to be supplying 10 HP to a coupledmechanical load, determine the rotational losses at the point ofoperation ***Any two branchesplease do not be late Q2 –А230VdomachinehasanemfconstantK = 212.21 V· ś/Wb rad and Ra =0.278 N . The field is separatelyexcited and produces 0.01 Wb per pole. = 36 A for all parts ofthe problem. (a) At what speed does the machine operate as adc generator with rated terminal voltage? (b) At what speeddoes the machine operate as a dc motor with rated terminalvoltage? (c) If an external resistance R =12 is added in serieswith the armature circuit, at what speed does the machineoperate as a dc motor with rated terminal voltage? (d) If themotor of part (b) is known to be supplying 10 HP to a coupledmechanical load, determine the rotational losses at the point ofoperation

Answered: Image /qna-images/answer/1ebf1114-ec20-48b8-923c-b174f5889cb0.jpg

Answered: A 230 V dc machine has an emf constant…

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

Related questions

Concept explainers

Question

A 230 V dc machine has an emf constant
and . The field is separately
excited and produces 0.01 Wb per pole. for all parts of
the problem. (a) At what speed does the machine operate as a
dc generator with rated terminal voltage? (b) At what speed
does the machine operate as a dc motor with rated terminal
voltage? (c) If an external resistance is added in series
with the armature circuit, at what speed does the machine
operate as a dc motor with rated terminal voltage? (d) If the
motor of part (b) is known to be supplying 10 HP to a coupled
mechanical load, determine the rotational losses at the point of
operation

***Any two branches

please do not be late

Q2 –
А
230
V
do
machine
has
an
emf
constant
K = 212.21 V· ś/Wb rad and Ra =0.278 N . The field is separately
excited and produces 0.01 Wb per pole. = 36 A for all parts of
the problem. (a) At what speed does the machine operate as a
dc generator with rated terminal voltage? (b) At what speed
does the machine operate as a dc motor with rated terminal
voltage? (c) If an external resistance R =12 is added in series
with the armature circuit, at what speed does the machine
operate as a dc motor with rated terminal voltage? (d) If the
motor of part (b) is known to be supplying 10 HP to a coupled
mechanical load, determine the rotational losses at the point of
operation

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions