8. An alternator requires an excitation of 2A to produce on short circuit its fullload current of 60A. The same excitation on open cireuit gives an emf of 260V.If the resistance of the armature is 0.8N and the terminal voltage on full load is11000V, find the induced emf when the pf isa) unity (Ans. 684V )b) 0.6 leading(Ans. 533V)

Given Irated =60 ARa =0.8 ΏVt =11000 VISC =2 A E = 260 V

8. An alternator requires an excitation of 2A to produce on short circuit its full load current of 60A. The same excitation on open circuit gives an emf of 260v. If the resistance of the armature is 0.8N and the terminal voltage on full load is 11000V, find the induced emf when the pf is a) unity (Ans. 684V ) b) 0.6 leading (Ans. 533V)

8. An alternator requires an excitation of 2A to produce on short circuit its full load current of 60A. The same excitation on open circuit gives an emf of 260v. If the resistance of the armature is 0.8N and the terminal voltage on full load is 11000V, find the induced emf when the pf is a) unity (Ans. 684V ) b) 0.6 leading (Ans. 533V)

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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