A shunt-wound DC motor with the field coils and rotor connected in parallel (Figure 1) operatesfrom a 130 V DC power line. The resistance of the field windings, R. is 208 n. The resistanceof the rotor, R,, is 4.90 1. When the motor is running, the rotor develops an emf E. The motordraws a current of 4.46 A from the line. Friction losses amount to 45.0 WPart CCompute the emf E.• View Available Hint(s)TematatesSymbolsundo redo Tesekeyboard shortcuts HelpVSubmitPart DCompute the rate of development of thermal energy in the field windings.Express your answer in watts.> View Available Hint(s)Templates Symbols undo redo Teset keyboard shortcuts HelpPan,windings =FigureWK 1 of 1SubmitPart ECompute the rate Pin.rotor of development of thermal energy in the rotor.RER,Express your answer in watts.> View Available Hint(s)Templates Symbols undo redo teset keyboard shortcuts helpPinrotor=

Given Data:Supply voltage Vdc = 130 VField winding resistance Rf= 208 ΩArmature winding resistance…

shunt-wound DC motor with the field coils and rotor connected in parallel (Figure 1) operates rom a 130 V DC power line. The resistance of the field windings, Rr, i 208 n. The resistance f the rotor, R,, is 4.90 1. When the motor is running, the rotor develops an emf E. The motor Braws a current of 4.46 A from the line. Friction losses amount to 45.0 W

shunt-wound DC motor with the field coils and rotor connected in parallel (Figure 1) operates rom a 130 V DC power line. The resistance of the field windings, Rr, i 208 n. The resistance f the rotor, R,, is 4.90 1. When the motor is running, the rotor develops an emf E. The motor Braws a current of 4.46 A from the line. Friction losses amount to 45.0 W

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.

Question

A shunt-wound DC motor with the field coils and rotor connected in parallel (Figure 1) operates
from a 130 V DC power line. The resistance of the field windings, R. is 208 n. The resistance
of the rotor, R,, is 4.90 1. When the motor is running, the rotor develops an emf E. The motor
draws a current of 4.46 A from the line. Friction losses amount to 45.0 W
Part C
Compute the emf E.
• View Available Hint(s)
Tematates
Symbols
undo redo Tese
keyboard shortcuts Help
V
Submit
Part D
Compute the rate of development of thermal energy in the field windings.
Express your answer in watts.
> View Available Hint(s)
Templates Symbols undo redo Teset keyboard shortcuts Help
Pan,windings =
Figure
W
K 1 of 1
Submit
Part E
Compute the rate Pin.rotor of development of thermal energy in the rotor.
R
ER,
Express your answer in watts.
> View Available Hint(s)
Templates Symbols undo redo teset keyboard shortcuts help
Pinrotor=

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