My interview ExperienceESE-2013Interview Date : 6 Jan. 2014(FN)UPSC Chairperson: VinayMittalBranch MechanicalQuestions Chairperson:- ur name is SunilKumar. U did ur btech inautomobile engg from lingayainst. Of mgt nd tech. Is this aprivate clg?Chairperson- u r doing mtechin design eng. ok u got arunner-up prize in junkyard.Wt is dat?Chairperson- what is utility ofwooden air engine?Chairperson- where it is usednow a days? What is theapplication?Chairperson- one of ur hobbyis teaching children. Tell meabout dat.Chairperson- u do it for anoble cause.Chairperson- why dieselengine is more efficient thanpetrol? Although diesel ismore efficient but diesel havemore black smoke andcarbon particles?1 tech-what are technology toreduce emission?What is bharat stage4?What are the pollutants oremission from vehicle?2 techWhat is the different type ofbraking used in automobile?What is advantage of discbrake over drum brake?How braking is done in ship?Chairperson- what is dynamicbraking in rail?2 tech continueTypes of stainless steel ?What are the alloying elementin stainless steel?Can we do welding onstainless steel?What will be the effect ofwelding on it3 techWhat is mach no?In subsonic flow it is lessthan 1 or more?In supersonic flow ?turbocharger?difference btwn turboprop nd turbojet?Difference btw nozzle anddiffuser?What is air density?Density of petrol?Which one have densitypetrol or water?Density of mild steel?Chairperson- we add someadditive in petrol? What isdat? We obtained it fromsome jatropha tree?Chairperson- in whatproportion we add bio-dieselin diesel ?Chairperson- ok how will ucontribute to the indianrailway service if u join?