For a 18600W 2400rpm DC motor, the following values are given: Ra = 0.089 Q (value at room temperature (250C)), La = 0.00144 H, KT = 0.85 Nm / A and KV = 0.851 V/ (rad / s)), (In calculations Use the hot resistance values at 1000C.) (Take the rated field winding losses as Wf=210W.) If this DC machine is operating as a motor with rated flux at rated speed, calculate the rated torque (TR), rated current (IR), rated voltage (VR), efficiency (n) at the rated point, taking into account the winding losses. Find the speed (@NL) of this motor in no-load condition. TR Nm IR A VR V Eff % ONL rpm
For a 18600W 2400rpm DC motor, the following values are given: Ra = 0.089 Q (value at room temperature (250C)), La = 0.00144 H, KT = 0.85 Nm / A and KV = 0.851 V/ (rad / s)), (In calculations Use the hot resistance values at 1000C.) (Take the rated field winding losses as Wf=210W.) If this DC machine is operating as a motor with rated flux at rated speed, calculate the rated torque (TR), rated current (IR), rated voltage (VR), efficiency (n) at the rated point, taking into account the winding losses. Find the speed (@NL) of this motor in no-load condition. TR Nm IR A VR V Eff % ONL rpm
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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![For a 18600W 2400rpm DC motor, the following values are given: Ra = 0.089 2 (value at room temperature
(250C)), La = 0.00144 H, KT = 0.85 Nm / A and KV = 0.851 V / (rad / s)), (In calculations Use the hot resistance
values at 1000C.) (Take the rated field winding losses as Wf= 210W.)
If this DC machine is operating as a motor with rated flux at rated speed, calculate the rated
torque (TR), rated current (IR), rated voltage (VR), efficiency (n) at the rated point, taking into
account the winding losses. Find the speed (@NL) of this motor in no-load condition.
TR
Nm
IR
А
VR
V
Eff =
%
ONL=
rpm](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1f714bea-a813-46f4-9ec5-f3108cf1e053%2Fd1fe6fb3-5718-45b1-9bf8-ba0f72a5daff%2F8e5jqz7_processed.png&w=3840&q=75)
Transcribed Image Text:For a 18600W 2400rpm DC motor, the following values are given: Ra = 0.089 2 (value at room temperature
(250C)), La = 0.00144 H, KT = 0.85 Nm / A and KV = 0.851 V / (rad / s)), (In calculations Use the hot resistance
values at 1000C.) (Take the rated field winding losses as Wf= 210W.)
If this DC machine is operating as a motor with rated flux at rated speed, calculate the rated
torque (TR), rated current (IR), rated voltage (VR), efficiency (n) at the rated point, taking into
account the winding losses. Find the speed (@NL) of this motor in no-load condition.
TR
Nm
IR
А
VR
V
Eff =
%
ONL=
rpm
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