Some of Mechanical Engineering Question for Interviews

1. even though LPG is economical than petrol,why we are not promoting LPG usage?
2. explain bearing nomenclature with example.
3. Explain Why Nozzles are made convergent and Divergent?
4. Funtion of cluch
5. How a Diesel Engine Works in Generators?Explain with Labelled Diagram.
6. how can u increase the efficiency of power plant without changeing in effort?
7. How cooling Tower height selected E
8. how gravity filling machine is designed
9. How hydrulic power stearin @ lutch works plz explain?
10. How Hydrulic Power Stering & Clutch works plz explain ?
11. how much efficiency loss will took place in a steam turbine due to low vacuumWhat is Auto Dosing?
12. What is fuel oil viscosity, specific gravity?
13. What causes damage to impellers?
14. What are the causes of damage to propellers?
15. What are the causes of main engine black smoke?
16. How is a factor of safety used in design?
17. Interpret a Stress vs. Strain Curve.
18. What types of equations or theories would be used in Static Failure?
19. What types of equations would be used in Fatigue Failure?
20. Which one is more efficient– a four stroke engine or a two stroke? Why?
21. What causes crankcase explosion?
22. What are the defects in exhaust valve?
23. In auto mobile industry for any type of vehicle how can we differentiate 2 stroke and 4 stroke engine....
24. In hydroulic clutch mechanism can i adjust clutch play? if it is possible plz explain ?
25. increase in unit speed increases the discharge of impulse turbine how?
26. Name fuels used in nuclear power plant?
27. On what property u can distinguish material as brittle or ductile?
28. On what thermodynamic cycle nuclear power plant works?
29. Pipe. Whats The Concept Behind It?
30. Purpose of centrifugal pump casing wear ring and impeller wear ring what is back plate in centrifugal pumps and its purpose?
31. Suppose a steel bar of cross sectional area A is subjected to load P at one end and 2P at the other end ,what will be the induced
32. waht is vaily gap in welding?
33. what are engines that use carburetor and that use inductor ? difference between them
34. What are the conditions considered while evaluvating MARGIN OF SAFETY for newly designed mechanical components....? or
35. what are the types of welding machine?
36. What are your significant functional achievements in the present company? How did they contribute to the total process
37. What do you mean gy "Clausius inequality"?
38. What does a pump develops? Flow or Pressure. Give the Answer with Proper Logic.
39. what for orifice using in liquid flow line
40. what is bearing? how many types of bearing
41. What is difference between sand blasting and grit blasting ? What is its purpose and how is it done ?
42. what is drive speed & what is driven speed
43. What is Dry Bulb Temperature and Wet Bulb temperature?
44. what is electronically operated pneumatic valves? give one example
45. What is FEED?
46. What happens when too much oil is injected in the working cylinder
47. What is the seal packing gland for turbine?
48. How to prevent back fire of boiler?
49. What is the tolerance allowable for ISMC 150(c-channel) as per IS 2062?
50. why the reaction turbines are not exposed to atmosphere? and why the impulse turbines are exposed to?
51. Where can you find the feed check valve and feed stop valve and give the purpose of it?
52. What s gland sealing steam?
53. What type of pump use in boiler F.O. system?
54. A bearing is designated as 6205 , what is it’s bore diameter?
55. advantages and disadvamtges of using lpg in car?
56. All Rector or Exchanger have spherical/hemispherical end Why?
57. Compare Brayton and Otto cycle.
58. current rating of a 3 phase DG set is 20 Amps, but what will be the per phase current for single phase supply.
59. Define Overall Heat transfer coefficient.
60. do any one have an idea,of saipem engineering interviw?
61. Does Is 2062 Specifies Only Seamless Pipes Or Erw Pipe Is Also Covered Under Is 2062
62. Explain about power technology?
63. How is SAP useful for mechanical engineers?
64. What are the different types of bearings? What are different types of rivets?
65. What is the applicability of mechanical engineering in the industry?
66. Explain Newton’s Laws.