seonlyA shunt generator supplies 96 A at a terminal voltage of 200 V. The armature and shuntfield resistances are 0.1 Q2 and 50 Q2 respectively. The iron and frictional losses are 2500W. Find emf generated copper losses (i) efficiency۱/۱incluseost

The shunt field current (Ish) can be calculated using Ohm's law, which states that the current is…

Answered: seonly A shunt generator supplies 96 A…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Q1. Long-shunt generator delivers a load current of 30 A at 220 V. It has armature and shunt field resistances of 0.050, 2000 respectively: A- calculate the generated emf, the copper loss in armature, shunt field loss and the total copper loss. B-if the iron and friction loss is 1000W. Calculate the electrical efficiency, mechanical efficiency, commertial efficiency and maximum efficiency. (Armature reaction may be neglected) Q2. A 220V, 4-pole, lap-connected, shunt motor with 800 conductors in armature slots. The armature and shunt field resistance are 0.62 and 2200 respectively. The motor runs to supply load with 8000W and draw current (50amps) from the mains. The flux per pole is 25mWb A- Calculate the gross torque developed by the armature, the shaft torque (useful), and the lost torque. B- Calculate the gross power developed by the armature, the iron and friction lost power, mechanical efficiency, electrical efficiency, and the overall efficiency. Armature reaction may be…
Q1 / A DC shunt generator delivers 187 A at 260 V. The armature resistance and shunt field resistance are 0.028 2 and 48 2 respectively. The sum of stray losses equal 950 W. Find the machine efficiency.
A long-shunt compound-wound generator gives 240 volts at F.L. output of 100A. The resistances of various windings of the machine are : armature (including brush contact) 0.1 Q, series field 0.02 Q, inter pole field 0.025 2, shunt field (including regulating 0.2 resistance) 100 2. The iron loss at F.L. is 1000 W; windage and friction losses total 500 W. Calculate F.L. efficiency of the machine.
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B. A compound generator delivers 140 A at 300 V and the resistance of the shunt field, series field,and armature are 30 52, 0.2 52, and 0.1 S2 respectively. Calculate the electromotive force
Q1/ B/ A shunt DC generator delivers 450A at 230V, and the resistances of the shunt and armature windings are 50 and 0.03 ohm, respectively. .Calculate the generated EMF
Determine the total resistance and the current flow for the circuit shown in the accompanying figure?
1) A 100-V shunt motor is developing 6 hp while operating at an overall efficiency of 86%. The armature and shunt field resistances are 0.06 and 50 ohms respectively. Determine the stray power losses. 2) The field and armature resistance of a 400 V shunt motor are 200 ohms and 0.1 ohms, respectively. The motor takes 30 A of current while running at 1000 rpm. If the frictional losses are 400 W, determine the motor efficiency. 3) In a brake test of an elevator door, the ammeter and voltmeter measuring the input read 34 A at 220 V. The speed of the motor is found to be 910 rpm and the balance on the 0.61 m brake arm reads 11.9 kg. The dead weight of the arm is found to be 1.09 kg. What is the hp output of the motor?
Calculate the resistance between A and B: 1 ohm 5 ohm ww 4 ohm B 2 ohm 6 ohm 3 ohm 7 ohm
A flowmeter in a circuit uses US standard current transmission. The flowmeter can provide measurements from 0 gpm to 20 gpm. If the transmission current is 10 mA, what is the measured flow rate? 7.5 gpm B. 12.5 gpm C. 6 gpm D. 10 gpm
Find the output four Effizieny = 0.062 Irbuthamer = 500 J
Compute for BG, AC and HG.

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seonly A shunt generator supplies 96 A at a terminal voltage of 200 V. The armature and shunt field resistances are 0.1 Q2 and 50 Q2 respectively. The iron and frictional losses are 2500 W. Find emf generated copper losses (i) efficiency ۱/۱ incluse ost