A 15 kW, 230 V, shunt generator was run light as a motor to determine its stray power losses at rated load. The applied voltage across the armature, computed for test was 256 V and the armature current drawn is 2.5 A. The armature and shunt field resistances are 0.25 and 115 ohms, respectively. Calculate the generator efficiency at half load. Assume stray power losses to be constant.

A 15 kW, 230 V, shunt generator was run light as a motor to determine its stray power losses at rated load. The applied voltage across the armature, computed for test was 256 V and the armature current drawn is 2.5 A. The armature and shunt field resistances are 0.25 and 115 ohms, respectively. Calculate the generator efficiency at half load. Assume stray power losses to be constant.

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

An 8-Pole, simplex lap wound, shunt generator has 800conductors and a flux per pole of 0.025Wb. The armature and shunt field resistances are 1ohms and 45ohms respectively. If a resistance of 11.25ohms is connected as load and the machine is running at 800rpm. Calculate the load current(in amp)
The armature winding resistance of a long shunt connected DC generator is 0.4ohm, the resistances of the shunt and serial field windings are 125 ohms and 0.1 ohms, respectively. While the generator supplies 8KW of power to the load it feeds, which is the voltage it produces since the output voltage is 250V?
A four-pole, lap wound, long shunt generator produces 0.07 Wb of flux per pole. The armature winding contains 220 turns with a resistance of 0.004 ohm per turn. Calculate the terminal voltage when the generator is running at 900 rpm with an armature current of 50 A and the resistance of the shunt and series fields are 100 ohms and 0.02 ohm, respectively. Additionally, determine the generator's output power. (Draw the circuit diagram)
A shunt generator is connected to a load that draws 30 KW on full-load. The armature resistance is 0.1 ohm. If the power generated in the armature is 33.50 KW, and the shunt field resistance is 80 ohms, determine the: A. Variable copper loss B. Constant loss C. Maximum efficiency.
Q5) A 300 KW and 600 V Long shunt compound DC generator has shunt field resistance = 100 2, armature resistance = 0.05 Q, series field resistance 0.02 Q commutating field winding resistance = 0.015 2 connected in series with armature winding and diverter resistance = 0.03 Q connected in parallel with commutating field. When the generator is delivering half full load, calculate power generated by the armature.
Kindly solve what is ask with complete solution with circuit diagram so that I can understand. I want a handwritten solution. Thank you!.
A 15 kW,230 V, short-shunt generator was run light as a motor to determine rotational losses at rated load. The applied voltage across the armature, computed for test was 254 V and the armature current is 2A. The armature, series field and shunt field resistances are 0.25Ω,0.25Ω and 100Ω, respectively. Calculate the generator efficiency at 75% load. Assume rotational losses to be constant.
The armature of a 14 pole DC shunt generator has 60 slots and is lap wound with 13 conductors per slots. The generator is running at a speed of 630 rpm and supplies a resistive load of 16 ohms at a terminal voltage of 310V. The armature resistance is 0.5 ohms and field resistance is 60 ohms. Find the armature current, the generated EMF and the flux per pole.
Solve it quickly please
Q1/ The following information is given for a 250-kW, 500-V, long-shunt compound generator: Shunt field resistance = 75 Q, armature resistance including brush resistance = 0.03 0, commutating field winding resistance = 0.011 Q, series field resistance = 0.012 Q, diverter resistance = 0.036 Q. When the machine is delivering full load, calculate the voltage and power generated by the armature. 3:09
An 8-Pole, simplex lap wound, shunt generator has 800conductors and a flux per pole of 0.025Wb. The armature and shunt field resistances are 1ohms and 45ohms respectively. If a resistance of 11.25ohms is connected as load and the machine is running at 800rpm. Calculate the terminal voltage (in Watts)
A 4 pole lap wound DC shunt generator has 300 armature conductors and a flux per pole of 0.01 Wb. If runs at 1000 rpm. The armature and shunt field resistances are 0.2 ohm and 125 ohms respectively. Calculate the terminal voltage when it is loaded to take a load current of 90 A.