A separately excited motor has fixed field voltage ofV=240V, and armature voltage V, that varied from (120to 240V), R,=100N, Rdi varied from (1000 to 4002),AadjR=0.440, and N,=4000 turns. The magnetizing curve isgiven at n=1200rpm as in the following table:O.E, (V) 150 200 220 260 270280288290|, (A) 0.350.480.560.780.87 1 1.2 1.41. What is the speed, the torque and the efficiency when1,=25A, Rd=1750 and V=A=180V?'adj2. Find the speed regulation.3. What is the maximum speed could be reached byvarying both V, and Rd when 1,=25A?adj4. What is the maximum speed when I,=50A andF.-520A.turn.AR5. Draw the torque-speed characteristic.

A separately excited motor has fixed field voltage of V,=240V, and armature voltage V, that varied from (120 to 240V), R,=1000, Rdi varied from (1000 to 4000), A adj R=0.440, and N,=4000 turns. The magnetizing curve is given at n,=1200rpm as in the following table: E, (V) 150 200 220 260 270 280288290 I, (A) 0.350.480.560.780.87 1 1.2|1.4| 1. What is the speed, the torque and the efficiency when L=25A, Rd=1750 and V,=180V? `adj 2. Find the speed regulation. A 3. What is the maximum speed could be reached by varying both V, and Rd when1,=25A? A `adj 'A 4. What is the maximum speed when I,=50A and F.=520A.turn. AR 5. Draw the torque-speed characteristic.

A separately excited motor has fixed field voltage of V,=240V, and armature voltage V, that varied from (120 to 240V), R,=1000, Rdi varied from (1000 to 4000), A adj R=0.440, and N,=4000 turns. The magnetizing curve is given at n,=1200rpm as in the following table: E, (V) 150 200 220 260 270 280288290 I, (A) 0.350.480.560.780.87 1 1.2|1.4| 1. What is the speed, the torque and the efficiency when L=25A, Rd=1750 and V,=180V? `adj 2. Find the speed regulation. A 3. What is the maximum speed could be reached by varying both V, and Rd when1,=25A? A `adj 'A 4. What is the maximum speed when I,=50A and F.=520A.turn. AR 5. Draw the torque-speed characteristic.

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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