I need the complete solution. 19. A 4 pole, 100 V d.c. shunt generator with lap connected armature having field and armatureresistances of 50 2 and 0.1 2 respectively, supplied 60, 100 V, 40 W lamps. All lamps areconnected in parallel. Calculate the total armature current and generated e.m.f. Assume brush dropto be 1 V/brush.(Ans.: 26 A, 104.6 V)20. A short shunt compound d.c. generator supplied 7.5 kW at 230 V. The shunt field, series field andarmature resistances are 100 2, 0.32 and 0.4 2 respectively. Calculate the induced e.m.f. and theload resistance.(Ans.: 253.8 V, 7)21 A shunt generator delivers 450 A at 230 V and resistances of shunt field and armature windingsare 50 2 and 0.03 2 respectively. Calculate the generated e.m.f.(Ans.: 243.638 V)22. A 20 kW short shunt compound generator works on full load with terminal voltage of 250 V.Assume R, = 0.05 Q, R = 0.025 0 and Rsh = 100 2, calculate the generated e.m.f.(Ans.: 256.126 V)

Approach to solving the question:Detailed explanation:First, draw the circuit diagram. For short…

Answered: 19. A 4 pole, 100 V d.c. shunt…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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A long shunt compound generator supplies a load consists of 172 shunt lamps each rated at 48 W, 235 V. The resistance of the armature is 0.035 Q. The resistance of the shunt windings is 35 Q. The resistance of the series windings is ?0.014 Q. Find the efficiency. The stray loss is 583 W
A 35-ohm diverter resistance is shunted across the series field of a DC series generator is supplying a current of 6 A to a series lighting system through a feeder of total resistance, 1.25 ohm. The terminal voltage is 2,300 V. The armature and series field resistances are respectively 18 and 15 ohms respectively. Determine the power developed in the armature of the generator?
Fill in the following blanks:1. Lap winding is suitable for ……. Voltage, …… current d.c. generators.2. The critical resistance of the d.c. generator is the resistance of ……. .
A short shunt compound DC generator supplies a load of 10A at a voltage of 10 volts. If the resistances of Armature, shunt field and series field windings are 0.01 ohm, 1 ohm and 0.00 ohm respectively. c) write down the factors to improve the generated voltage. Generated Voltage is 10.2 V
A DC series generator is supplying a current of 5A to a series lighting system through a feeder ofto total resistance, 1.0 ohm. The terminal voltage is 2500 V. The armature and series fieldresistances are respectively 18 and 15 ohms respectively. A 30-ohm diverter resistance isshunted across the series field. Determine the power developed in the armature of thegenerator?
A DC shunt generator delivers 45 A at a terminal voltage of 220 V. The armature and the shunt field resistances are 0.01 2 and 44N respectively. The stray losses are 375 W. What is percentage efficiency of the DC generator
A certain 110 V shunt generator has an armature and brush resistance of 0.06 ohm at full load of 85 A. The resistance of the shunt field is 45 ohms, and the stray power losses are found to be 897 watts. Determine the efficiency.
A short shunt compound generator delivers 150A at a terminal voltage is 230V. The shunt field current is 2.5A. The resistances of the armature, series field and diverter are 0.032-ohm, 0.015 ohm and 0.03 ohm, respectively. Calculate the electrical efficiency of the generator at this load.
1. The armature of D.C. generator is laminated to (a) Reduce the bulk (b) Provide the bulk (c) Reduce copper loss (d) Reduce eddy current loss 2. In case of D.C. machines, mechanical losses are primary function of (a) Current (b) Voltage (c) Speed (d) None of above 3. In a D.C. generator the critical resistance refers to the resistance of (a) Brushes (b) Field (c) Armature (d) Load 4. Which of the following does not change in an ordinary transformer ? (a) Frequency (b) Voltage (c) Current (d) Any of the above tion
11. A shunt generator has an induced voltage on open circuit of 127 V. When the machine is on load the terminal voltage is 120 V. The load current if the field resistance be 15 ohm and armature resistance be 15 ohm a) 342 A b) 350 A c) 358 A
At rated voltage, a 125 kw, 300-V long shunt compound system provides power with a stray power loss of 3.69 kW. The winding resistors are as follows: armature=0.023, series field=0.04, shunt field=75. Under this condition, find the efficiency of the system.
A 12 pole generator has a lap wound armature with 78 slots with 40 conductors per slot. Then the total number of armature conductors are ............... Answer

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