If we put a ball(made by metal) of dia 10mm on table of
size 200 mm*200 mm . weight of ball is 10 kg(98.1N) it
should point conact with table than what is the stress
acting on table and why?
Answer Posted / djangokill
Exact mathematical geometries arent followed in real world, and this is actually not a case of point contact. Rather, the ball would depress a certain amount, and a finite small surface would be in contact. For kinematic analysis, we may assume this insignificant and assume it a point contact.
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
We have fifteen year old CNC turning lathe,placed in dust proof room,recently giving control problems frequently.We are considering to retrofit it.Pl.brief me about various point I should consider for accessing the mechanical health of machine.
what precautions must be used when water washing a boiler?
What is dtsi? Why it is used in motor bikes?
Define monochromatic emissive power. [EbĪ»]
How cooling Tower height selected
describe a type when u anticipated potential problems and developed preventive measure
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?
In which reactor the coolant and moderator are the same ?
general diesel engine we are using 15w 40 oil unfortunatley our oiller mis used the oil hudralic oil refilled when he doing the service which kind proplem coming in future?
How do you control cylinder liner wear?
Which material grade is better for low temperature application upto -20 deg C either IS 2062 GR B OR IS 2062 GR C ?
Sir, I need help. I have completed dip. mech engg was working in facilties management ((Dept) for +2 yrs) in real estate, now I want to join in for mechanical industries please suggest me which should I opt for?
composition of cast iron fc-500,fc-550,& fc-260 which is use in sheet metal industries as a piller set
what is the trignometry of lifting tools using the wire rope ? any formula for trignometry ?
how to size an expansion tank in chiller system ?