EA5 kW, 200 V dc shunt motor has armature resistance of 1 ohm and shunt field resistance of 100 ohm. At no load, the motor draws 6 A from 200 V supply and runs at 1000 rpm. What is the total copper loss of the machine? (a) 400 W (b) 16 W (d) 416 W (c) 36 W

EA5 kW, 200 V dc shunt motor has armature resistance of 1 ohm and shunt field resistance of 100 ohm. At no load, the motor draws 6 A from 200 V supply and runs at 1000 rpm. What is the total copper loss of the machine? (a) 400 W (b) 16 W (d) 416 W (c) 36 W

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

Similar questions

A 240 V DC shunt motor takes 20 A and delivers 28 N.m at 1350 r.p.m, the efficiency is . O 73.63% O 80.325% O 82.467% O 89.964%
The current flows in the windings of the DC machine which causes the O Eddy current loss Friction loss O Ohmic loss O Hysteresis loss
Answer three questions only Q1- A 6 pole de generator has 300 conductors and each conductor is capable of carrying 40 A. The flux per pole is 0.015 Wb and the machine is driven at 1500 rpm .Find total current, Eg and armature power if the machine is lap connected. Q2- A 6 pole lap connected DC generator has 480 turns ,the resistance of each turn is 0.03 Q, the flux per pole is 0.042 Wb and the machine is driven at 1200 rpm. Find E, and terminal voltage at full load armature current of 45 A Q3- What is the effect of adding additional coil in armature DC-generator? Q4- Why armature core is provided with air ducts?
The field winding of a d.c. motor is connected to a 110V supply. At a temperature of 18°C, the current drawn is 0.575 A. After running the machine for some time the current has fallen to 0.475 A, the voltage remaining unchanged. Calculate the temperature of the winding under the new conditions, assuming that the temperature coefficient of resistance of copper is 0.004 26/°C at 0°C.
q1 a
A shunt generator delivers 1,000 W at 149 V to a load. If the armature resistance is 0 ohm, and the shunt field resistance is 56 ohms, calculate the shunt field current in ampere.
Stray losses represent: O A. Resistive losses in the windings of the machine O B. Losses due to friction of the moving parts O C. Losses due to magnetization and demagnetization of the core O D. Windage losses O E. None of the other choices are correct
Please write a short discussion for each number and explain. 1. Losses in a DC generator 2. Power stages in a DC generator 3. Efficiency of a DC generator
Do you What is Induction motor?
please help
A 240 V series motor takes 40 amperes when giving its rated output at 1500r.p.m. Its resistance is 0.3 ohm. Find what resistance must be added to obtain rated torque at 1000 r.p.m. 2 1.9 2.1 1.8
4-pole, d.c. shunt motor has a flux per pole of 0.04 Wb and the armature is lap-wound with 720 conductors. The shunt field resistance is 240 Ω and the armature resistance is 0.2 Ω. Brush contact drop is 1V per brush. Determine the speed of the machine when running (a) as a motor taking 60 A and (b) as a generator supplying 120 A. The terminal voltage in each case is 480 V. 5 3 K4 8 Derive the Torque equation of a D.C Motor.