The rotational losses for a 1000 hp synchronous motor are found to be 18 kW. The motor operates from a 2300 V three-phase supply. The machine's synchronous reactance is 1.9 2 and that the armature resistance is negligible. Establish the following points (11l and E) on the V curve corresponding to full-load power output: 1. Stability limit, 8 = -90°. 2. Power factor of 0.8 lagging. 3. Unity power factor. 4. Power factor of 0.8 leading.
The rotational losses for a 1000 hp synchronous motor are found to be 18 kW. The motor operates from a 2300 V three-phase supply. The machine's synchronous reactance is 1.9 2 and that the armature resistance is negligible. Establish the following points (11l and E) on the V curve corresponding to full-load power output: 1. Stability limit, 8 = -90°. 2. Power factor of 0.8 lagging. 3. Unity power factor. 4. Power factor of 0.8 leading.
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter12: Power System Controls
Section: Chapter Questions
Problem 12.4P
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Qestion 2 please
![QUESTION I
A 10-MVA three-phase Y-connected 13,800 V two-pole 60 Hz
turbogenerator has an armature resistance of 0.062 per phase and a
synchronous reactance of 1.8 2 per phase. Find the excitation voltage at
no load, half load, and full load for power factors of
(a)
0.8 leading,
(b)
unity, and
(c) 0.8 lagging
with rated terminal voltage.
QUESTION IL
The rotational losses for a 1000 hp synchronous motor are found to be 18
kW. The motor operates from a 2300 V three-phase supply. The machine's
synchronous reactance is 1.9 2 and that the armature resistance is
negligible.
Establish the following points (1l and E) on the V curve corresponding to
full-load power output:
1. Stability limit, 8 = -90°.
2. Power factor of 0.8 lagging.
3. Unity power factor.
4. Power factor of 0.8 leading.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F89e1a31e-5f91-4568-a673-adaacaa6a736%2F06a2c041-84ca-430b-8f00-194ebffd4f09%2Fbp613_processed.jpeg&w=3840&q=75)
Transcribed Image Text:QUESTION I
A 10-MVA three-phase Y-connected 13,800 V two-pole 60 Hz
turbogenerator has an armature resistance of 0.062 per phase and a
synchronous reactance of 1.8 2 per phase. Find the excitation voltage at
no load, half load, and full load for power factors of
(a)
0.8 leading,
(b)
unity, and
(c) 0.8 lagging
with rated terminal voltage.
QUESTION IL
The rotational losses for a 1000 hp synchronous motor are found to be 18
kW. The motor operates from a 2300 V three-phase supply. The machine's
synchronous reactance is 1.9 2 and that the armature resistance is
negligible.
Establish the following points (1l and E) on the V curve corresponding to
full-load power output:
1. Stability limit, 8 = -90°.
2. Power factor of 0.8 lagging.
3. Unity power factor.
4. Power factor of 0.8 leading.
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