A. Method of average losses
B. Equivalent current method
C. Equivalent torque method
D. Equivalent power method
E. All of the above
Related Mcqs:
- Which of the following methods does not take into account the maximum temperature rise under variable load conditions ?
A. Equivalent power method
B. Equivalent current method
C. Method of average losses
D. Equivalent torque method - By which of the following methods the temperature rise of windings and other parts may be determined ?
A. Thermometer method
B. Resistance method
C. Embedded temperature detector method
D. Any of the above - Multiple inlet system of air cooling of turbo-alternators can be used for machines of rating upto_______________?
A. 10 MW
B. 30 MW
C. 60 MW
D. 150 MW - With conventional hydrogen cooling it is possible to increase the rating of a single unit to___________?
A. 50 MW
B. 100 MW
C. 200 MW
D. none of the above - The cylindrical windings using circular conductors are used for current rating of____________?
A. upto 20 A
B. upto 40 A
C. upto 60 A
D. upto 80 A - Which of the following methods is used for air cooling of turbo-alternators ?
A. One sided axial ventilation
B. Two sided axial ventilation
C. Multiple inlet system
D. All of the above - Which of the following methods is most accurate ?
A. Equivalent current method
B. Equivalent power method
C. Equivalent torque method
D. Method of average losses - Which of the following methods may be adopted to reduce the effects of armature reaction ?
A. Increase in length of air gap at pole tips
B. Increasing reluctance of pole tips
C. Compensating windings
D. Interpoles
E. All of the above - The length cf air gap to be provided in __________ is primarily determined by power factor consideration?
A. d.c. series motor .
B. d.c. shunt motor
C. induction motor
D. synchronous motor - Which of the following is the commonly used type of electromagnets ?
A. Flat-faced armature type
B. Horse shoe type
C. Flat-faced plunger type
D. All of the above