6.15 A DC shunt generator is rated 20 kW, 220 V, and 1800 rpm. It has armature and field winding resistances of 0.1 N and 110 n, respectively. The data for the magnetization curve at 1800 rpm are E, (V) 5 25 60 120 170 200 215 225 240 253 I (A) 0.0 0.1 0.25 0.5 0.75 1.0 1.25 1.5 2.0 2.3 The machine is connected as a self-excited generator. a. Determine the maximum generated voltage. b. The generator delivers full-load current at rated voltage with a field current of 2 A. Determine the resistance of the field rheostat. c. Determine the electromagnetic power and torque developed at full-load condition. d. Determine the armature reaction effect in equivalent field amperes (I) at full Joad

6.15 A DC shunt generator is rated 20 kW, 220 V, and 1800 rpm. It has armature and field winding resistances of 0.1 N and 110 n, respectively. The data for the magnetization curve at 1800 rpm are E, (V) 5 25 60 120 170 200 215 225 240 253 I (A) 0.0 0.1 0.25 0.5 0.75 1.0 1.25 1.5 2.0 2.3 The machine is connected as a self-excited generator. a. Determine the maximum generated voltage. b. The generator delivers full-load current at rated voltage with a field current of 2 A. Determine the resistance of the field rheostat. c. Determine the electromagnetic power and torque developed at full-load condition. d. Determine the armature reaction effect in equivalent field amperes (I) at full Joad

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

Suppose there is a load that needs 120W of power and is located 50ft from a generator with a total resistance of 0.2525 Ohms. The load can be designed to operate at 12V or 120V. Find the voltage drop and power losses in the connecting wire for each voltage and comment on the results.
A separately excited dc generator generates 230 V when driven at 1200 rpm of the field flux is decreased by 10%. What is the new emf with speed remains the same.
for a 20kW PM synchroneous generator that produces 400V and 50A at its output. the resistance of the coil is 217.412 micro ohms. area of the magnetic feild is is 0.146 squared meter. it has a magnetic flux density of 1.49T, a frequency of 50Hz. Calculate the iron losses of this generator with no load. show all working Please answer in short like it definitely don't reject in shorts please... ..
A four-pole Series connected generator has a lap connected armature with 728 conductors. If the generator supplies one hundred incandescence lamp (100V, 60 W). The series field and armature resistance are 0.2 ohms and 0.015 ohms respectively. Find the generated voltage.
A 6 pole DC lap wound generator has 34 armature conductors with flux per pole is 48 mWb and the e.m.f generated is 55 V, then the speed of the machine is 4.29 rps 0.43 rps 33.70 rps 33.70 rps
What are the rotating parts on d.c machine. commutator segments O brushes O inter-pole O pole shoe
Problem #1: A 6-pole, 3-phase, Y-connected, 60-Hz alternator has 12 slots per pole and 4 conductors per slot. The winding is 5/6 pitch. There are 0.025 Wb entering the armature from each north pole, and this flux is sinusoidally distributed along the air gap. The armature coils are all connected in series. Determine (a) pitch factor (b) distribution factor (c) induced emf per phase
A 6 pole DC lap wound generator has 32 armature conductors with flux per pole is 44 mWb and the e.m.f generated is 74 V, then the speed of the machine is O 3.28 rps 0.33 rps 52.56 rps O 52.56 rps arch op
A 4 pole generator with wave wound armature has 50 slots each having 22 conductors. The flux per pole is 0.01 Wb. At what speed must the armature rotate to give an induced EMF of 220V is,
Mention factors causing a permanent magnet generator not to generate emf
× 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…