Mechanical Engineering Interview Questions
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DEAR SIR, I NEED A MODEL QUESTION PAPER OF JSPL. i'M IN mechanical BRANCH. E-MAIL ID:sksuman289@gmail.com

790

What is the diffrent between centrifugal and positive displacement pump

4 5158

how piston moves from bdc to tdc during compression stroke. which force acted to compress the fuel at pressure....

2 2772




Ratio of specific heats of air.

Bhel,

2 2636

what is difference between pressure and stress?

MAHINDRA,

6 5512

what is meant by horse power(h.p)?

3 2807

what is the unit of force in C.G.S system and F.P.S system?

1 14774

i want to jspl Q&A,pls send this email id:var05mech@yahoo.co.in

Jindal,

659




why not a.c supply used to charged the lead acid battery

739

Q-1-what type of bearing used in system? Q2-MEANING OF BEARING SPECIFICATION-ZZ, C3,RS 2Z ZZNR

1 899

Why in screw & centrifugal compressor using rolor bearing

746

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?

Bhel,

914

WHAT IS THE DIFFERENCE B/W LUBE OIL 20 W 40 AND 20 W 40 OIL.

793

what is the diffrent between centrifugal and positive displacement pump?

3 2427

how many types of heat transfer?

1 2013


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Un-Answered Questions { Mechanical Engineering }

sir,,,, iam appearing in hpcl exam....so plz send previous papers to me of hpcl... anant

986


"In refrigeration, why during operations is running low pressure at the suction side?"

2682


After any cause of repaired how i start the engine by slow speed 800 to 900 rpm electronic control moudle engine [cummins]

950


relate the frequency between feed water treatment & blow off

917


DEAR Friends, If you any of them have previous placement papers or interview papers...plzz forward it to my mail id. "rajeevasv@gmail.com"........... Tank you

748






DURING STEAM BLOWING OF PIPE LINE, A BLUISH COLOR CONICAL PATTERN IS OBSERVED AT THE END OF PIPE. WHATS THE CONCEPT BEHIND IT?

1125


in regenrative cycle why to use two liquid(water&mercury) on steam genration cycle.

583


i am preparing for motor vehicle assistant inespector please send me old questions papers.

667


what is difference between fan and blowers

1146


i have an iterview on 18 sep for bhel ,pls send some questions asked during interview during the earlier interview on 11th sep

746


Explain the principle of Suizer Fuel oil injection pump

746


How to calculate heat load .For example 10 TR .Then how we will find load (we want rh(relatavie humidity) sir)

442


what is the difference between fire grate in a boiler and the burner? and is the fire grate is the furnace of the boiler?

707


interview questiions for production planning

1698


Explain how to clean LO

729