An alternator rated for 490 kVA, 3.3kV, 10 poles, 3 phase, 50 Hz, Delta connected has 182 term per phase, Determine length of air gap. Given: Bay =0.54 weber/m² Pole are to pole pitch ratio= 0.66 SCR = 1.2, Gap contraction factor = 1.15, Winding factor = 0.95 Mmf for air gap is 80% of number load field mmf Field form factor = 0.68.

An alternator rated for 490 kVA, 3.3kV, 10 poles, 3 phase, 50 Hz, Delta connected has 182 term per phase, Determine length of air gap. Given: Bay =0.54 weber/m² Pole are to pole pitch ratio= 0.66 SCR = 1.2, Gap contraction factor = 1.15, Winding factor = 0.95 Mmf for air gap is 80% of number load field mmf Field form factor = 0.68.

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.9MCQ: Match the following: (i) Hysteresis loss (a) Can be redud by constructing the core with laminated...

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