Mechanical Engineering Interview Questions
Questions Answers Views Company eMail

What causes crankcase explosion?

RRB,

788

What do you call the clearing of air inside cylinder after combustion?

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1 1701

What is the circulation of I.O. pump of diesel engine?

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795




What causes diesel engine trouble when using heavy oil?

RRB, MAHINDRA,

1 1856

What causes turbocharger surging?

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962

What pressure is highest L.O. Gravity Head or S.W. of the stern tube circulation

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793

What is fuel catalytic cracking

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1 1203

Contaminants of fuel oil

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707




Crankcase oil mist detector

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799

Inspection for intermediate shaft bearing.

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1 1708

What are the causes of main engine black smoke?

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2 1808

Causes of emergency trip of diesel engine

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1 808

What are the causes if one cylinder in a diesel engine has a high temperature?

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689

Explain how the lubricating oil circulates in a diesel engine.

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720

What are the causes of damage to propellers?

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731


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Un-Answered Questions { Mechanical Engineering }

Greetings This question is about hydraulics and I request an expert to answer it. A simple hydraulic machine is made up of two heads, a larger one with a larger force inside a wider pipe and a smaller one with a smaller force inside a smaller pipe in width as in the second picture on this link: http://science.howstuffworks.com/hydraulic1.htm The question is this: what happens if the smaller head and the smaller force doesn’t exist but the smaller pipe is high enough to take all the liquid? For example the larger head is 1.00 sqr metre and can go down 1.00m under a weight of 100.00kg. The cross sectional area of the smaller pipe is 0.001 sqr metre. Now when the larger head goes down 1.00m, how high the liquid from the wider pipe can go into the smaller pipe of the cross sectional area of 0.001 sqr metre? Regards

820


How the F.W.C. system of diesel engine circulate?

866


Heat a vessel with water inside and cool it under tap suddenly. Now when we try to open it...It does not open easily ...why?

131


Is IS 2062 different from ASTM A 36 or both are almost same

15648


what is cyclon vibration effect in turbine

889






Classification of bunkers?

988


I am a technical graduate with 2 years of experience in automobile industry. i want to prepare for air force technical level examination. will u pls tell me what is the syllabus or do u have some model question papers???

789


How to Track the Inventory Items that are avaliable past 15years.

825


what is difference between british wire guage & birmingham wire guage

851


1. What are good characteristics of good combustion in a boiler? 2. What do you analyze from boiler water analysis? 3. What do you treat in high alkalinity of boiler water? 4. What is a feed water pump? Dearator feed heater? 5. What is the purpose of the nozzle of impulse turbine? 6. What are the things needed to have an efficient boiler burning? 7. Name Of Parts And Each Purpose 8. What are the causes of emergency stop in a steam engine? 9. What is the normal vacuum pressure in a steam turbine atmospheric condenser? What would cause the press to falls? 10. Steam turbine (function an parts) 11. What is the boiling point of water? 12. What are the safety devices of boiler? 13. What is the effect of high alkaline water to a boiler? 14. Steps In starting boilers. 15. Small gear found in the steam turbine. 16. What is an Economizer? 17. What are the methods of heat transfer? 18. Types of pressure 19. What are the different parts of impulse reaction turbine? 20. What is the color of the flame of the boiler running in good condition? 21. What type of pump is commonly used is feed water system in auxiliary boiler? 22. What is the specific heat of water? 23. What do you do to prevent flare black? 24. What is a brake horsepower? 25. What is the purpose of a de-superheater? 26. What is the purpose of corrugated furnaces? 27. What are the causes of steam turbine failure? 28. What is the purpose of superheater? 29. Given a cutaway isometric view of the steam turbine. Examinee was asked to identify the following Parts: 30. What is thrust bearing? 31. Give five boiler mounting valves. 32. In steam boiler, what are the various test in water boiler? 33. How much calorific value of heat is needed to heat 00c of 34. What will happen if boiler backfires? 35. What is the color of flame if the boiler is running in good condition? How about when it is not in good condition? 36. How does the steam work in a steam turbine? 37. What are the causes of boiler backfire and steps in how to prevent it from happening? 38. What are the causes of high alkalinity in boiler water? 39. What are sensible heat, latent heat, and specific heat of water? 40. What are the causes of turbine vibration 41. Identify the parts of steam turbine 42. What is the normal Ph value of boiler water 43. Causes of dilution of lubricating oil in a steam turbine? 44. Explain briefly- good combustion of auxiliary boiler? 45. Method of testing or checking boiler water? 46. What is mean carry over of Aux. Boiler? 47. What are steam turbine parts usually come into damage? 48. Why must we pay attention when we drain steam in steam turbine. What factors are observed? 49. What type of pump use in boiler F.O. system? 50. What parameters to be reported when we send lubricating oil for shore analysis? 51. In boiler, what does steam and smoke goes out to the funnel. What reason? 52. Where can you find the feed check valve and feed stop valve and give the purpose of it? 53. What are the causes of troubles in boiler during operations? 54. Give the purpose of nozzle in impulse turbine? 55. What s gland sealing steam? 56. How to prevent back fire of boiler? 57. What is the used of economizer in boiler? 58. What is the seal packing gland for turbine? 59. What is the flow of steam in an impulse turbine? 60. What will happen if you blow the soot in the boiler? 61. State the purpose of air heater? 62. How to operate soot blower boiler and economizer? 63. What do you mean by A.CC.? 64. What is the thermal efficiency of a diesel engine? 65. What is a blow down valves?

914


What are the procedures on how to anneal?

720


what is procedure of measuring operating length of mechanical seal.(in case of centrifugel pump)

1097


what is the difference between steel tube grade IS 1239&IS 1169

1950


should cutouts made in main header of metal ducting be deducted from duct measurement.

1001


what is the calculation of selection ofan capacity is 12000m3/hr.

668