NPCIL INTERVIEW 2018

NPCIL Interview
Mechanical

1. Name
2. College
3. Summer training kaha se ki?(Suratgarh super thermal power station)
4. NPCIL k bare kuch jante ho?
5. Favourite subjects (Basic thermo, HT, FM, PP, SOM)
6. What is super critical in steam power plant?
7. Draw cycle for that.
8. Draw Rankine cycle diagram.
9. Explain each and every process.
10. Components where the processes are happening.
11. Value of pressure in condenser.
12. What if we reduce the condenser pressure?

13. I said about dryness fraction then said to tell another reason
14. Drawn steam pipe with insulation then told me draw the temperature profile.
15. A steam pipe given and it is simply supported then SFD and BMD and Curve after deflection
16. Value of angle of wedge so that block kept on that does not slide.
17. Gate 2018 question piston cylinder with dead weight on it and hole at the bottom. Calculate the velocity.

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NPCIL Interview Experience 02/07/2018

Firstly when I entered the room there were 6 members I wished them, they started with formal introduction from where you are,collage etc.

1. Then asked to write down some favourite subjects,  I wrote Thermodynamics, ,FM, SOM, Heat transfer & R.A.C.

2. One panelist started with basic piston cylinder questions generally asked in BARC Interview as I had prepared some barc interview from quora or some where like if a piston and cylinder heated than which process draw PV diagram,if you put sudden mass on piston than which process draw PV diagram,if we put that mass very slowly in fractions than which process I said Isothermal than he told me to draw same PV diagram and than told me to compare both the process in PV diagram like work done, final pressure etc.I answered very well to these questions as I already prepared those.

3. Than he made a opening to the middle of the cylinder to the atmosphere and repeated the same above questions like mass put suddenly and in fractions , now draw PV diagram (first upto hole when piston comes it is constant pressure process as it open to atmosphere but after that same concept adiabatic in sudden mass and Isothermal in slow mass) same above questions like PV diagrams and final state.

4. how work can be calculated from pv diagram and what are the conditions to be occur to Isothermal and adiabatic processes.

5. Then they move to fluid mechanics and gave a building with 8 floors and a pump is put on the base of the building with a water tank there and told that water is not delivering to the 7 and 8 floor why. I suggest NPSH Concept than they asked evrything about NPSH and told me to calculate NPSH of that pump.

6. Next one asked about my intern from where and what you learned there ? Diesel locomotive works in varanasi than asked questions like….Compression ratio of diesel and petrol engine.

ii. kis engine mai kisko mix kar sakte ho petrol mai dieslel ya diesel mai petrol ?

iii. konsa engine heavy hota hai and why.?

iv. kiske cylinder ka pressure jyada hota hai ?

7. Now SOM,  Design of cylinder gave some data and told me to calculate the thikness.I assumed some diameter than asked me about material I told cast iron I took some fector of safety and UTS then they asked about UTS and stress strain diagrams for cast iron and mild steel and tensile test for mild steel , tumne kiya hai kabhi ? I told group mai kiya hai Sir collage mai ,then he asked kaise karte hai ? konsi machine hoti hai ? machine kya measure karti hai ? diagram of specimen etc. and kisme strain jyada hoti hai cast iron or mild steel ?and values of UTS and yield stress or both.

8. Then they asked some questions to production like kon konsi process hoti hai forming ki?Uses of casting, wahan ek bell rakhi thi ye kese banti hai?  iske upar layer kese hoti hai ? (electroplating) asked what is electroplating ? What is 3D printing etc. ?

9. Then finally some questions about NPCIL,  tumhare kota k paas konsa plant hai ?
Kabhi visit kiye ho ?  Baaki plants kahan kahan hai etc ?
Last hum rajasthan walon ko maharasthra mai locate karte hai,  will you face any problem ? and kon konsi PSU k interview diye ho ab tak.

Interview was for around 1 hour and 10 minutes. It was very nice experience to face such kind of interview