4-9 A separate excited dc generator turning at1400 r/min produces an induced voltage of127 V. The armature resistance is 2 andthe machine delivers a current of 12 A.Calculatea. the terminal voltage [V]b. the heat dissipated in the armature [W]c. the braking torque exerted by thearmature [N-m]

Answered: Image /qna-images/answer/fd8b85c8-568e-4e28-9f0d-dd78d32c8146.jpg

Answered: 4-9 A separate excited dc generator…

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 120 V shunt generator running at 850 rpm has its armature and shunt field resistance of 0.15 ohm and 50 ohm respectively. It supplies 200 lamps each rated at 60 W, 100 V. The friction and windage and core loss of the machine is 400 W. its armature copper * loss on full load and shunt field loss is 2156.7 W, 240 W 2232.6 W, 240 W O 2232.6 W, 200 W 2156.7 W, 200 W O
A 900 rpm, 4 pole lap wound shunt motor takes 300 A. The flux per pole is 0.02 Wb and the armature has 1500 conductors. The shunt field takes 4 A of current. Solve for back emf (V).
A dc shunt generator delivers 50 kw at 250 v, its armature has a 4-pole wave winding with a resistance of 0.01 ohm and its field resistance is 125 ohm. if the number of turns in the armature is 201 and the flux per pole is 0.02 wb, find the voltage generated and the speed of operation. *
A shunt DC generator has no load terminal voltage of 140V. Armature resistance is 1ohm and shunt field resistance is 50ohms. Calculate: (i) Induced voltage (ii) A load is now connected to the terminals that starts drawing 2A current and terminal voltage drops to 130V. Calculate the new value of the induced voltage Make sure to draw equivalent circuits for (i) and (ii)
A 220 V DC series motor runs drawing a current of 30 A from the supply. Armature and field circuit resistances are 0.4 and 0.1 respectively. The load torque varies as the square of the speed. The flux in the motor may be taken as being proportional to the armature current. To reduce the speed of the motor by 50% the resistance in ohms that should be added in series with the armature is
Help me solve this one
A shunt DC motor is supplied by 520V terminals voltage and is used to supply a mechanical load with rotating speed of 1000rpm. The armature is wave-wound and has 500 conductors. The useful flux per pole is 0.03Wb and there are 4 poles (2 pairs of poles). The armature resistance is 0.4 Ohms. Calculate: 1.The internal emf of the motor. 2.The armature current. CLEAR AND CORRECT OR DISLIKE
5. Calculate the flux per pole required on full-load for a 50 kW, 400 V, 8-pole, 600 r.p.m. d.c. shunt generator with 256 conductors arranged in a lap-connected winding. The armature winding resistances is 0.1 Ω, the shunt field resistance is 200 Ω and there is a brush contact voltage drop of 1 V at each brush on full-load. Subject Electrical Machine 1
Electrical machines
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