Answer / hudsthomas

graphite is used as cheap electrode in edm process
its relatively cheap and is used for rough finishing
usually prior to copper electrode is used

Answer / prabh

it is also used in electric arc furnaces to melt the steel .

Answer / gurmeet.mech

graphit electrode is udes in EDm.. and in BAttery cells..

In HVAC R22 gas are using for cooling but why oil are using & which type of it is???????/

2 Answers  

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what is rigging

4 Answers   ONGC,

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What happens when too much oil is injected in the working cylinder

1 Answers   CCCL,

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why u join this company

1 Answers   TCS,

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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?

0 Answers   Bhel,

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• What motivates you to do your best on the job?

2 Answers   Petro Star Mount,

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7. What are the different types of conventional and non conventional machining processes

0 Answers   Nucon,

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What is the importance of Prandtl Number in heat transfer?. Compare the prandtl numbers of Air, water and Liquid metal. If prandtl number is more what do you understand?. Will you provide fins to enhance heat transfer when prandtl number is less?.

1 Answers   IGCAR,

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i am studying B.Tech 3rd year i want to write group exams. but i don't know about group-1,2,3,4 exams can u tell all the details about group 1,2,3,4 exams and what are the requirements to atttend the exams and how many rounds and what are the subjects we have to look into and what are the posts related to the group-1,2,3,4.

1 Answers  

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Name the operation which can be performed by lathe machine?

0 Answers  

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what is the function of gland in steam turbines? what is requirement of de-superheating is steam turbines what is the purpose of spray line for gland

1 Answers  

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if there is self ignition in petro engines then why is the need of spark plug in petrol engine ???

1 Answers   Velammal Engineering College,

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