The art of interview is totally different. Firstly they will take telephonic interview after if you get shortlisted they will call you for FTF interview now in FTF Three round interview will be there 1 mechanical 2. Electrical 3. PLC programming Basically just go through you basics purely basic engineering of mechanical electrical instrumentation etc. They didn't care if you are from mechanical or electrical you have 5 or 10 year of experience.