A 280 kW, 250v, 600 rpm separately excitedDC generator with armature and fieldresistors = 0.03, 25 ohm respectively. thegenerator is delivering the rated power atrated voltage, power loss is 10 kW, fieldvoltage is 150 V. The magnetizationcharacteristics table of this dc machine isas follows:I, (A)1.02.03.04.05.0E, (V) 209240260280300Calculate the induced voltage at full load??Select one:310 V209 V330.5 V283.6 V

Given, A 280 kW, 250 V, 600 rpm separately excited DC generator with Armature resistance, Ra =…

Answered: A 280 kW, 250v, 600 rpm separately…

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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Similar questions

Q2. A 4-pole, wave-wound armature has 72 slots with two coil-sides per slot, each coil has four turns. If the flux per pole is 20 mWb and the armature rotates at 720 rpm, what is the induced emf across the armature? (Ans. 276.48 V) 0.05
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.
Q2. A 4-pole, wave-wound armature has 72 slots with two coil-sides per slot, each coil has four turns. If the flux per pole is 20 mWb and the armature rotates at 720 rpm, what is the induced emf across the armature? (Ans. 276.48 V)
The armature of a 4 -polelap wound shunt generator has 400 conductors.The flux per pole is 0.05 Wb.The armature and field resistance are 0.05Qand 500. Find the speed of the machine when supplying 450 A at a terminal voltage of 250 V.
An 8- pole dc generator has 500 armature conducters and a useful flux of 0.05 Wb. A. What will be the emf generated, if it is lap- connected and runs at 1200 rpm? B. What must be the speed at which it is to be driven to produce the same emf if it is wave wound.
The DC shunt generator with the terminal voltage 375 V, armature drop 8 V and the each brush drop 2 V, then the value of generated emf is
A six-pole dc machine has an armature connected as a lap winding. The armature has 32 slots with six conductors per slot. The armature is rotated at 600 rpm, and the flux per pole is 30 mWb. Calculate the induced voltage. 1
A D.C. shunt wound generator running at constant speed generates a voltage of 120V at a certain value of field current. When flux is reduced by 10% calculate the new value of flux Estimate the change in the generated voltage when the field current is reduced by 10%, assuming the flux is proportional to the field current.
A separately-excited dc generator develops 288 volts at a certain flux and at a certain speed. What should be the new generated voltage in volts for this machine if the speed is changed to 85 % of the original value and the flux is increased by 67 % from the original value?
× 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…
The DC shunt generator with the terminal voltage 375 V, armature drop 6 V and the each brush drop 4 V, then the value of generated emf is

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