in Pal> Q. 6. The nominal power of a shunt generator is 30 kW. The nominaloutputbrasistoltage of the generator is 240 V. The shunt field windingresistance is 50 2. The armature resistance is 0.1 0. The operating pointparameters are given as the rotor emf 255 terminal voltage 240 V,and the mechanical power loss 1232 W. So,(a) Determine the output power and the efficiency.(b) If the brush voltage drop is 1.2 V, determine the output power and theefficiency.**Do not forg to draw the equivalent circuit first.Prahin Jiskanan, PhD

In this question, we need to determine the output power and efficiency of the DC generator.…

> Q. 6. The nomin I power of a shunt generator is 30 kW. The no output voltage of the generator is 240 V. The shunt field resistance is 50 2. The armature resistance is 0.1 wine are given as the rotor emf 255 V Toraparameters a and the mechanical power loss 1232 W. the winding operating point 55, the terminal voltage 240 V, (a) Determine the output power and the efficiency. (b) If the brush voltage drop 1.2 V, determine the output power and the efficiency. Jiskan *Do not forget to draw the equivalent circuit first. PhD

> Q. 6. The nomin I power of a shunt generator is 30 kW. The no output voltage of the generator is 240 V. The shunt field resistance is 50 2. The armature resistance is 0.1 wine are given as the rotor emf 255 V Toraparameters a and the mechanical power loss 1232 W. the winding operating point 55, the terminal voltage 240 V, (a) Determine the output power and the efficiency. (b) If the brush voltage drop 1.2 V, determine the output power and the efficiency. Jiskan *Do not forget to draw the equivalent circuit first. PhD

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

Discussion:- 1. What do you understand by "armature- reaction"? Discuss the effect of armature reaction in an alternator when it is loaded with resistive, inductive and capacitive loads. 2. Give the value of voltage regulation for different power factors at full load current and interpret their values.
The terminal voltage of a 150 kW series generator is 600 V at rated load. The armature resistance is 0.06 ohms and the series field resistance is 0.04 ohms. Find generated emf.
Q3/ A/ Compare between de series and shunt generator. Q3/ B/ Briefly explain the commutating process in dc machine.
What is alternating current generator? Describe the principle; construction and working of A.C generator, also derive the expression for the induced emf of A.C generator.
al Power Technology A short-shunt d.c. compound generator supplies 250A at 50V. The resistance of armature, series field and shunt field windings are 0.02, 0.08 and 50 ohms respectively. Find the emf generated. The armature current la The generated voltage Eg An 8-pole d.c. generator has 455 armature conductors, and a useful flux of 44 mWb per pole. What will be the e.m.f. generated if it is lap-connected and runs at 1060 rpm? What must be the speed at which it is to driven produce the same e.m.f. if it is wave-wound?
Two shunt generators A and B operates in parallel and their load characteristicsmay be taken us straight lines. The voltage of the generator A falls from 240 V atno-load to 220 V at 200 A while that of B falls from 245 V at no load to 220 V at150 A. Determine the current which each machine supplies to a common load of300 A and the bus-bar voltage at this load.
. When a self-excited compound DC generator supplies load, the terminal voltage is not the same as the generated emE Why? a) voltage drop across the armature resistance will reduce the voltage available at the load terminals b) where there is a series field, voltage drop across the series field resistance will reduce the voltage available at the load terminals c) both "a" and "b" d) neither "a" nor "b"
Two DC generators, each with armature resistance of 0.02 ohm and fieldresistance of 50 ohms run in parallel and supply a total current of 1000 amperesto the load circuit. If their emfs are 270 V and 265 V, their bus bar voltagewill be. [Ans. 267.5 V]
A synchronous generator with a synchronous reactance of 1.15 p.u. is connected to an infinite bus whose voltage is one p.u. through an equivalent reactance of 0.15 p.u. The maximum permissible active power output is 1.2 p.u.A. Compute the excitation voltage E.B. The power output is gradually reduced to 0.7 p.u. with fixed field excitation. Find the new current and power angle δ.
. Two dc shunt generators A and B are rated at 100 and 150 kW at 110 V respectively, Their external load characteristics may be considered as straight line. The voltage drop In the terminal voltage from no-load to full-load Is 10 V for A and 20 V ſor B. Determine the operating voltage when these generators are operated in parallel to supply a load of 220 kW.
B) fill in the blanks: that of rotor MMF. 1)In a 3-phase synchronous motor the speed of stator MMF is ......... 2)The synchronous reactance of the synchronous machine is....... 3) When two transformers are operating in parallel, they will share the load as under...... 4)A synchronous motor is operating on no-load at unity power factor. If the field current is increased, power factor will become..
In alternator, the diameter of salient pole rotor is...