9. A shunt generator on test is separately excited and driven at 1000 rev/min. The open-circuit test figures are as follows: Field current (A) Induced e.m.f. (V) 0 0157 0-477 0-663 0-805 1-0 1-29 12:5 100 300 400 450 500 -550 The machine is then shunt-connected and run at 1000 rev/min with a constant field-circuit resistance of 540 Q. The armature-circuit resistance is 1 Q. Deduce and plot the load characteristic of this machine, neglecting the effect of armature reaction. What is the ap- proximate value of the maximum load current? (E.M.E.U.)
9. A shunt generator on test is separately excited and driven at 1000 rev/min. The open-circuit test figures are as follows: Field current (A) Induced e.m.f. (V) 0 0157 0-477 0-663 0-805 1-0 1-29 12:5 100 300 400 450 500 -550 The machine is then shunt-connected and run at 1000 rev/min with a constant field-circuit resistance of 540 Q. The armature-circuit resistance is 1 Q. Deduce and plot the load characteristic of this machine, neglecting the effect of armature reaction. What is the ap- proximate value of the maximum load current? (E.M.E.U.)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Transcribed Image Text:9. A shunt generator on test is separately excited and driven at 1000
rev/min. The open-circuit test figures are as follows:
Field current (A)
Induced e.m.f. (V)
0 0 157 0:477 0-663 0:805 1·0 1-29
12-5 100 300 400 450 500 -550
The machine is then shunt-connected and run at 1000 rev/min with
a constant field-circuit resistance of 540 Q. The armature-circuit
resistance is 1 Q. Deduce and plot the load characteristic of this
machine, neglecting the effect of armature reaction. What is the ap-
proximate value of the maximum load current?
(E.M.E.U.)
when
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