railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Alternator and Synchronous Motors
During the short-circuit test of a synchronous machine, which of the following are accounted for in the short-circuit test loss?
(i), I2R loss in the armature winding due to the flow of short-circuiting (AC) current
(ii) Local core loss caused by armature leakage flux
(iii) Core loss due to resultant air-gap flux.
(iv) Windage and friction loss
1
(i), (ii), (iii) and (iv)
2
Only (i), (ii) and (iii)
3
Only (ii), (iii) and (iv)
4
Only (i), (ii) and (iv)