L&T ECC MECHANICAL Engineering Interview Questions Model

L&T ECC MECHANICAL Engineering Interview Questions

MECHANICAL QUESTIONS:

1. governor sensitivity w1,w2 given ans. sensitivity=(w1-w2)*2/(w1+w2)
2. 2 pumps ->easy question ans. parallel.
3. boiling water nuclear plant fuel ans. Plutonium.
4. Hygrometry
5. Buoyancy force acts in metacentre of the body.
6. ORN ans. Stack in critical path.
7. Break even point - sum.
8. Cast Iron – Steel what welding.
9. 2700 kg/m3, 670 C, ans. Aluminium.
10. Moment of inertia increases 3 time then, section modulus also increase 3 times to keep F constant.
11. Reverse osmosis question
12. Creep.
13. 950 C ans: austentite
14. Moment of Inertia of shaft ans pi/64 *d4
15. Thin Cylinders problem
16. Synchronous motor speed
17. 125 cm dia is given, speed ratio : 0.42, rpm 3000, inlet velocity of jet
18. Rotary Compressors for what? High quantity, low pressure
19. problem in break even point
20. Val is used in CAM
21. Some questions in nuclear power plants?
22. power of diesel engine
23. what is a function of differential
24. to increase water discharge should the pumps be in series or parallel
25. melting point lead(40%), tin(60%) read about eutectic systems
26. Reverse osmosis
27. which of the following is not a press op.

a) nibbling b) punching c) forming

PLANT & MACHINERY QUESTIONS

28. Expansion of OHC
29. speed of cam shaft half the crank shaft
30. which of the following is correct

turbo charger uses crank shaft b) supercharger uses gas turbine c) neither is correct d) both are correct

32. Fluid coupling which uses stator to increase torque

33. Which process increase hardness and doesn’t decrease strength

34. which of following is boiler accessory

35. PERT deals with

36. Distance between bore of cylinder and connecting rod bearing is called

37. Swirl is used to

38. Octane rating deals with

APTITUDE QUESTIONS

1 .XYZ=296. The value of Y won’t be equal to?0.

2.X is an odd integer which one gives an even integer.?

3.75 men can do a work in 30 days. 25 men go for some other work. Remaining men can do that work in how many days?

4.a>b>1,then which one is correct?

i]a^2>b^2 ii]a^2>ab iii]a^2<ab

5.Which one has the higher value? Ans: 8/0.8.

6.Dia of pond is 100ft.width of the path outside that pond is 2ft.Area of that path?

Ans:pi/4*(104^2-100^2).

7.Two pie chart questions.

8.7 men can read ,8 men can write ,3 men don’t know anything.Total 15.How many can do both?