GMR General - other

GMR PAPER ON 15th SEPTEMBER 2008 

Hi i appeared for GMR- Airport. 
Pattern is
1.Written exam (q's 4m Power system, control system, EMFT, Analog, Electrical machines)
2.Tech+HRInterview
3.Hard core Tech Interview (toughest of all)

some of interview q's are as follows
Starting Methods of IM
Speed Control of IM
application of IM
types Of circuit breaker n thr working
Relays, fuses
q's 4m power electronics 
(application of phase control rectifiers, inverters, cycloconvertor, ac regulator, chooper)
Transformer efficiency and losses 
cooling of transformer,
cooling of alternator,
synchronizing procedure 4 alternator..
what is power factor?
q's on transformer banks
why synchronous motor is not self starting??
why IM is self staring>??
Is transformer is a electrical machine ??(it is ..em )
i was asked 2 make a SLD 
layout of thermal power station
q's 4m opamp
Types of UPS
dc motor applications (like where would we used dc series, shunt, compound etc...)