Q3. The following data are taken to obtain the magnetization curve of a 15-kw, 150-V, 6-pole de machineat its rated speed of 1200 rpm.Iç in A0.511.522.533.545Eo in V70112130140145149152155158Sketch the magnetization curves for speeds of 1200 rpm and 800rpm.

Q3. The following data are taken to obtain the magnetization curve of a 15-kW, 150-V, 6-pole de machine at its rated speed of 1200 rpm. It in A 0.5 1 1.5 2 2.5 3 3.5 5 Eo in V 70 112 130 140 145 149 152 155 158 Sketch the magnetization curves for speeds of 1200 rpm and 800 rpm. 4.

Q3. The following data are taken to obtain the magnetization curve of a 15-kW, 150-V, 6-pole de machine at its rated speed of 1200 rpm. It in A 0.5 1 1.5 2 2.5 3 3.5 5 Eo in V 70 112 130 140 145 149 152 155 158 Sketch the magnetization curves for speeds of 1200 rpm and 800 rpm. 4.

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

i need the answer quickly
Also explain what is magneto motive force???
f the angular speed of a rotating machine is 188.5 rad/sec, The speed in rpm is ........... a. 1000 b. 900 c. 1800 d. 1250
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
The voltage a cross the terminals of a certain 3-phase machine is 400 <40 ͦ V whereas the current which is assumed to be into this machine is 55<-60 ͦ Find the real and reactive powers consumed or delivered by this machine. What is the type of this machine?
Q3. Write if the shown statements are TRUE or FALSE. 1- In DC machine the induced e.m.f is proportional with flux only. 2- The Ta/l a graph of a d.c. series motor is a straight line throughout. 3- In a DC motor the direction of the shaft rotation can be change by changing the polarity of the power supply. 4-The critical resistance is less than armature resistance in shunt generator. 5-As the load is increased, the speed of a d.c. shunt motor increases slightly.
The torque in AC machines depends on Select one: a. The strength of the rotor magnetic field b.The strength of the external magnetic field c.The sin of the angle between the rotor magnetic field and the external magnetic field d.A constant representing the construction of the machine e.All of above Clear my choice
(c) The induced emf in a dc machine while running at 400 rpm is 150 V. Calculate the induced emf while the machine is running at 500 rpm. Assume constant flux.
A 220 V DC machine has an armature resistance of 1 Q. If the full load current is 20 A, what is the difference in induced voltage when the machine is running as generator and motor under full load condition
× 4:03 K s.eng.ruh.ac.lk □ Û 8. Figure 4 shows the core of a simple dc motor. The magnetization curve for the metal in this core is given by Figure 5 and Figure 6. Assume that the cross-sectional area of each air gap is 18 cm² and that the width of each air gap is 0.05 cm. The effective diameter of the rotor core is 4 cm. L It is desired to build a machine with as great a flux density as possible while avoiding excessive saturation in the core. What would be a reasonable maximum flux density for this core? ii. What would be the total flux in the core at the flux density of part (i)? iii. The maximum possible field current for this machine is I A. Select a reasonable number of turns of wire to provide the desired flux density while not exceeding the maximum available current. Flux Density, B (T) 2.8 སྤྲ ཤཱ ཀ ཀཱ བྷ ཀ ཡཱཾ བ ་ 1.2 1.0 0.4 0.2 4-48cm Figure 4 0 10 20 30 40 50 100 → Depth 4 cm -0.05 cm 200 300 500 1000 2000 Magnetizing Intensity, H (A.turns/m) Figure 5 Magnetization curve…