NPCIL Interview Experience & Questions

• You are passed out from NIT Kurukshetra so what did you do for one year after you passed out from college. Gap year is asked
• Where else have you taken the interview, how was your performance in BARC
• Will you get selected in BARC
• In which subject were you weak in BARC
• What is tribology (this was not mentioned as favorite subject)
• Interview was going on in Hindi, first college was asked in Hindi
• What is difference between oil and Greece in lubrication
• What is TQM (total deviation in interview) though my project was on quality control
• You were weak in BARC in thermos and SOM so please go on board and explain stress strain diagram on board
• Tensile test is on which machine
• Why two yield points
• Strain hardening etc …. many questions of stress strain diagram
• How can power be transmitted other than gears (they wanted to ask splines)
• What is practical application of spline
• Make a shaft transmitting power and gear is in center, corners have bearing
• Which theory shall you use for design of shaft
• Suggest more criteria for design
• Endurance limit definition
• How to reduce the fatigue
• Types of gear, draw the profile of gears
• Addendum, dedendum, circular pitch
• Derive contact length
• Many times, I said that I don’t know and I have not revised
• What is COP
• Draw VCR cycle simple question only
• Can we design shaft on basis of whirling
• Second frequency of whirling shaft
• Types of heat exchangers
• Write formula of LMTD
• What is formula of NTU
• What is effectiveness (did not go in depth)
• Centrifugal pump to draw water from 12-meter depth, is it possible
• What is depth limit up to which water can be pulled from below ground
• My interview was for 65 minutes
• Average it takes 30 to 40 min
• I told many places that I don’t know
• BARC interview is in depth but not in NPCIL
• Up to AIR 1000 they must have called

• Make PV diagram of processes in thermodynamics
• Show how can we approach these processes practically like constant pressure process etc
• Specific heat of gases depends on what factors other than temperature
• Bar subjected to force F on one side and 4F on other side, it was not in equilibrium draw stress vs distance graph
• What ever you say they will pull interview in that direction
• Convection temperature profile
• Why you feel cold when you sit below fan
• Molecular arrangement
• Lot of thinking is required
• What is need of glass in thermometer
• Can we replace glass as intermediary material
• Force vs distance relation for jet flow
• Viscous effect with temperature

Rahul faced interview of both NPCIL and BARC and finally got selected in NPCIL despite of not answering many questions.