Paper of L&T kharagpur
The pattern is like: 1) branch related ques. 50(30 min) 2) engg. aptitude test 60(40 min.) 3) non
verbal ques. 36 (40 min) mech. ques which i can recall is ...may not be as per the language stated there in
paper but it would really help there a lot..... mech.
1.what is the equivalent spring constant of two srings with k1 & k2 as sring constant connected in series?
ans. k1.k2/(k1+k2)
2.by which moulding we produce thermosetting plastics?
3.when air is dirty what will be the injectility of the fuel .................more ?
4.carbon deposits increase the comp. ratio.
5.carbon increases the hardness.
6.hot fluid passes thro the cylinder. by using two insulating material(k,2k)in which sequence may be more effective.......? ( firstk, then 2k matl.)
7.wings of the plane can be made by stretching.
8.what will be the metal removal ratio if the balancings r done at 3000&1500 rpm..
( cent. forces to be considered......ans 1:4)
9.what is cylinder ratio? ans. arrangement of cylinders in which the centre line of crankshaft journal is per.to the plane containing the centrelines of the engine cylinders.
10. In diesel cycle the compression ratio incereases more to expension ratio. 11. In the shm of the ball inside a earth hole passing through the center ,velocity maximum at the center.
12.viscosity of liquid increases with decrese in temprerature.
13. Piezometer measures static pressure..
14. Which iron is used for body construction of machines, gray or white iron ?( not sure)
15.what is core print ?
16. pig iron is manufacture in --------blast furness
17.what is the effect of increase arc lenght in building
18. m 62 indicates ------ 6mm outer diameter & 2 mm pitch
19. what raputre failure.
20 . 6 cylinders in a row , n0. of crancks = 1
21. If in a steam power plant vaccum in condensor reduces what is the effect
22. pressure in industrial pnumatic lines -------5 to 10 bar
23. effect of low temp. ( -20 degree ) on carbon steel .
24.method of hardening of machine guidesways
25. method of joining plastic by welding
26. safe method of loading on a cantileaver a) UDL b) center point load c) triangular load having zero at center
27. BMD for UDL in cantilever
Ans. parabolic
28.Beams of uniform strenght can be made by a) varying width b) varying depth c) both d) none
29. which of these not fusion welding process Ans: spot welding
30. function of stroboscope is
Ans: speed measurement of spur gear
31.if diameter of pully is double how will the designof key way change
32.gray cast iron used for machine parts
33. use of worm gear 34.what will be the diameter of punched hole in punching opereation a)same as punch b) punch dia + thichkness of sheet
35. this is figure porblem described as : there is right anguler wadge with pully at vertex connecting two equal masses by string one on the sloping side and other on the vertical side Questin is what will
happen to them
Ans: mass will fall down