Q.2 only DQ2-A 4- pole lap-wound, 900 r.p.m shunt generator has armature and field resistances of0.442 and 1752 respectively. The armature has 440 conductors and the flux perpole is 0.07 Wb . if the load resistance is 102.Calculate the terminal voltage andload current delivered by the generatoQ3-Draw developed diagram for a progressive simplex lap winding d.c motor, 12 slot and4-poles. Show: (a) the direction of rotation. (b) The current direction in each coilside, (c) The polarity of brushes, (d) the equivalent circuit of the armature.Note: take brush distance 1.5 commutator segmentsQ4-A 4-pole,35Kw,250V d.c. generator has a wave-wound armature with 240 turns.If the brush lead is 10°. Calculate the armature demagnetizing and cross-magnetizing amper-turn.Q5-A shunt generator gave the following results in the O.C.C. test at rated speed11.52.03.0 3.5Field current (A): 0.5E.M.F. (volt) :2.560120138145149151152The field resistance is adjusted to 532 and the terminal voltage is 106 V onload. Armature resistance is 0.1 2 and assuming that the flux is reduced by

Since you have posted the multiple questions so we are supposed to answer the 1st one. Q2)

2-A 4- pole lap-wound, 900 r.p.m shunt generator has armature and field resistances of 0.442 and 1752 respectively. The armature has 440 conductors and the flux per pole is 0.07 Wb . if the load resistance is 102.Calculate the terminal voltage and load current delivered by the generato

2-A 4- pole lap-wound, 900 r.p.m shunt generator has armature and field resistances of 0.442 and 1752 respectively. The armature has 440 conductors and the flux per pole is 0.07 Wb . if the load resistance is 102.Calculate the terminal voltage and load current delivered by the generato

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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A long-shunt, four pole, 1500-W, 250-V, duplex wave-wound DC compound generator with the rated speed of 500 r.p.m., has a shunt field resistance of 100 Ω, a series field resistance of 0.05 Ω and an armature resistance of 0.2 Ω. If the flux per pole is 48.798 mWb and a total of 620 conductors, calculate the following: (a) the generated voltage, (b) the field currents, (c) the power generated in the armature.
A long-shunt compound d.c. generator with armature, series field and shunt field resistance of 0.5, 0.4 and 250 Ω respectively gave the following readings when run at constant speed : Load current (A) : 0 10 20 30 40Terminal p.d. (V) : 480 478 475 471 467 Plot the curve of internal generated e.m.f. against load current. Explain fully the steps by which this curve is obtained and tabulate the values from which it is plotted.
A 500-V, wave-wound, 750 r.p.m. shunt generator supplies a load of 195 A. The armature has 720 conductors and shunt field resistance is 100 Ω. Find the demagnetising amp-turns/pole if brushes are advanced through 3 commutator segments at this load. Also, calculate the extra shunt field turns required to neutralize this demagnetisation.
An A 20kW DC shunt generator having an armature circuit resistance of 0.8Ω and a field resistance of 140 Ω, generates a terminal voltage of 230V at full load. Determine the total iron, friction and windage losses if the efficiency of the generator at full load= 83%.
A 1500 kW, 550 V, 16 pole generator runs at 150 rev. per min. What must be the useful flux if there are 2500 conductors lap-connected and the full-load copper losses being 25 kW? Calculate the area of the pole shoe if the gap density has a uniform value of 0.9 wb/m2 and find the no-load terminal voltage, neglecting armature reaction and change in speed.
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Q/ dc shunt generator 4 pole with 500 condcutor , wave running at speed 1000 r.p.m the resistance of armature and field are 0.02 , 55 ohm and delivering load 43.12kwatt at terminal voltage 220 volt, the iron losses is 750 watt 1-Torque developed by the prime mover .........and The torque developed by the armature ........... when running at 1000 r.p.m * 2-The load current ,,,,,,,,,,,,when the speed drops to 800 r.p.m. if If is unchanged ? * 3-Output of the prime motor…….kwatt * 4-Mechanical , electrical and overall efficiency …….. * 5-Flux per pole is......... wb *
An 8-Pole, simplex lap wound, shunt generator has 800conductors and a flux per pole of 0.025Wb and running at 1200rpm. The armature and shunt field resistances are 0.25Ω and 120Ω respectively. If the armature voltage drop is equal to 10V, what is the load current (in Amp)? use two decimal places if the answer is not exact and do not include the unit anymore.
please answer in bond paper 3. A long-shunt, four pole, 1500-W, 250-V, duplex wave-wound DC compound generator with the rated speed of 500 r.p.m., has a shunt field resistance of 100 Ω, a series field resistance of 0.05 Ω and an armature resistance of 0.2 Ω. If the flux per pole is 48.798 mWb and a total of 620 conductors, calculate the following: (a) the generated voltage, (b) the field currents, (c) the power generated in the armature.
1-) Total Armature Winding resistance of 200kW, 380V self-excitation shunt generator is 0.07 Ω and areawinding resistance is 60Ω. Brush-contact voltage drop is neglected. Generator 380V ratedit feeds the load at Rated Power value at voltage. (a) draw the equivalent circuit of the corresponding DC machine, specifying all current, voltage and winding resistors.Make appropriate arrangements for the generator (b) find the voltage value induced at full load (c) calculate the power value generated on the DC machine (Enter the formulas that you use for calculations and enter the names of the corresponding parameters.)
A 35 kW, 400 V, short shunt, compound dc generator has a full load efficiency of 85 %. If the resistance of the armature and interpole is 0.35 ohm and that of the series and shunt fields are 0.15 ohm and 220 ohms respectively. Calculate the following: Output of the prime mover = kW Power developed in the armature = kw Total Copper Losses = kw Combined bearing friction, windage and core loss = kw
The terminal voltage of a 75-kW shunt generator is 600 V at rated load. The resistance of the shunt-field circuit is 150 Q, and the armature-circuit resistance is 0.1 Ω. Find the generated emf. a) 612.9 V b) 621.9 V c) 692.1 V d) none of the above In a 50-kW 245-V shunt generator, 258 V are generated in the armature when the generator delivers rated load at rated voltage. The shunt-field current is 4 A. Find the resistance of the armature. a) 0.03 Ω b) 0.062 Ω c) 0.106 Ω d) none of the above A load that has a resistance of 8 Ω is connected to a separately excited generator that has an armature-circuit resistance of 0.5 Ω. A) What is the armature current when the generated emf is 130 V? a) 1.53 A b) 15.3 A c) 153 A d) none of the above