National Thermal Power Corporation Placement Paper Contributed by Karishma updated on Mar 2019

                                                           NTPC Placement Paper 

1. An ice block submerged in the water, if the ice melts level of water (increase,decrease,remains same,none) 

2. Simply supported beam with w point load at the middle, max. bending moment?(wl/4) 

3. Simply supported beam with UDL ,max.deflection (wl4/384EI) 

4. Cantilevel beam point load at tip,max.bending momemt comes at (end) 

5. When bearing life L10 represents (bearings 10%survive,bearings 10% fails, none ) 

6. For welding high carbon steels which type of flame is used (oxidizing,carburizing,neutral,none) 

7. Arrange the following cutting tools in decreasing order of machining hardness...Ceramics 

8. When P1 and P2 are the loads acting on bearings with life L1 and L2 then L1/L2=? L1/L2={P2/P1}10/3 

9. Product simplification does not mean?? Product characterization 

10. Which of the following process has the most scope in manufacturing? CAD/CAM, CAM, CIM, All the above. 

11. Concurrent engineering means? (Manufacturing, designing, both,none) 

12. Which manufacturing process yields higher output and increases worker productivity- (process layout,line+process,functional layout) 

13. 18-4-1 represents-, Tungsten-Cr-Vn 14 For which material is negative allowance provided-(Graphite,steel,bronze,cast iron) 

15. What is the recrystallisation temperature of tin- (60,300,1000,none) 

16. What is the purpose of borax in soldering- 

17. Top gates are provided in which type of casting-(Shallow casting,simple,complex,none) 

18. Which statement is true regarding simple gear trains-(i/p and o/p shafts r fixed, each shaft has 2 gears, i/p & o/p shafts r moving) 

19. What is the purpose of normalizing- (Refining of grain structure) 

20. As the grain size is decreased-(Hardness increases,corrosion resistance decreases,both) 

21. Isothermal gas is filled in a vessel at a pressure P and temperature T then considering the compressible forces as the height increases pressure ??(linearly increases linearly decreases exponentially increase ) 

22. A bottle is filled with water and air and is tied to a string and is rotated in horizontal direction. Then in which direction will air bubble travel? (bottom,neck,uniformly spread) 

23. A empty bottle(in vaccum) filled with a gas at temp T and press P when the pressure of bottle reaches P temperature of the gas is _? (T,T/K,TK) 

24. Bearing somerfield number _ with load on bearing? (increases,decreases,no change) 

25. Critical radius for a sphere is-(2k/h) 

26. Critical radius exist for_ (spherical,cylindrical,both,slab) 

27. Convectional resistance/internal resistance is called (biot number) 

28. Nusselt no. is? (hl/k) 

29. EOQ=? 

30. Which statement is true regarding critical path method? (i only one critical path exists for a network, more than one with same duration,)