Given: 275 kW, 3-phase, 6,600 V was tested with the following results. OCT in volts SCT in Amps With the stator short circuited, a field current of 50 A yields a : 5600 : 46.5 6600 7240 8100 58 67.5 96 short circuit current of 35 A. Determine by MMF Method the following at unity power factor FIND: 1. FIELD CURRENT REQUIRED TO PRODUCE RATED VOLTAGE AT NO LOAD= AMPS 2. FIELD CURRENT TO NEUTRALIZE THE EFFECTS OF ARMATURE REACTION==. AMPS 3. Field current required to produce rated voltage at full load 4. no-load voltage= V 5. %VR
Given: 275 kW, 3-phase, 6,600 V was tested with the following results. OCT in volts SCT in Amps With the stator short circuited, a field current of 50 A yields a : 5600 : 46.5 6600 7240 8100 58 67.5 96 short circuit current of 35 A. Determine by MMF Method the following at unity power factor FIND: 1. FIELD CURRENT REQUIRED TO PRODUCE RATED VOLTAGE AT NO LOAD= AMPS 2. FIELD CURRENT TO NEUTRALIZE THE EFFECTS OF ARMATURE REACTION==. AMPS 3. Field current required to produce rated voltage at full load 4. no-load voltage= V 5. %VR
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
Chapter4: Transmission Line Parameters
Section: Chapter Questions
Problem 4.8MCQ: An ac resistance is higher than a dc resistance. True False
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![Given: 275 kW, 3-phase, 6,600 V was tested with the following
results.
: 5600
: 46.5
With the stator short circuited , a field current of 50 A yields a
OCT in volts
6600
7240
8100
SCT in Amps
58
67.5
96
short circuit current of 35 A.
Determine by MMF Method the following at unity power factor
FIND: 1. FIELD CURRENT REQUIRED TO PRODUCE RATED VOLTAGE
AT NO LOAD=
AMPS
2. FIELD CURRENT TO NEUTRALIZE THE EFFECTS OF
ARMATURE REACTION==.
AMPS
3. Field current required to produce rated voltage at full load
4. no-load voltage=
V
5. %VR](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F57de4c00-b18f-4b75-adb7-13827a0b8447%2Fb1c2cbbe-a664-4bb5-a943-7a7fcfc04703%2Fv3bsf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Given: 275 kW, 3-phase, 6,600 V was tested with the following
results.
: 5600
: 46.5
With the stator short circuited , a field current of 50 A yields a
OCT in volts
6600
7240
8100
SCT in Amps
58
67.5
96
short circuit current of 35 A.
Determine by MMF Method the following at unity power factor
FIND: 1. FIELD CURRENT REQUIRED TO PRODUCE RATED VOLTAGE
AT NO LOAD=
AMPS
2. FIELD CURRENT TO NEUTRALIZE THE EFFECTS OF
ARMATURE REACTION==.
AMPS
3. Field current required to produce rated voltage at full load
4. no-load voltage=
V
5. %VR
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