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In riveting boiler plates, red hot riverts are used. Why? - Physics class 0

Question-In riveting boiler plates, red hot riverts are used. Why? - Physics class 0 class 0 with solution questions answer. All ncert questions Answers for class 0 subject Physics chapter and topic Thermal Properties Of Matter

In riveting boiler plates, red hot riverts are used. Why?

Question 1. Asked on :30 September 2020:06:17:30 PM

In riveting boiler plates, red hot riverts are used. Why?

Physics » » Thermal Properties Of Matter -Added by Shruti Srivastva

 

Answer by: Shruti Srivastva

Answer
Red hot revets are used so that on cooling, the grip becomes firm and steam tight.

-Answered by Shruti Srivastva On 30 September 2020:06:18:23 PM (20750 Average Rating Based on rating)

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See More Questions On Same Topics:

Class 0 ≫ Physics ≫ Thermal Properties Of Matter

  • Question-1. Is temperature a macroscopic or microscopic concept?
  • Question-2. What is dynamical theory of water?
  • Question-3. Why a clinical thermometer should not be sterilized by boiling?
  • Question-4. Why should a thermometer bulb have a small heat capacity? 
  • Question-5. What do you mean by triple point of water? Why it is unique?
  • Question-6. Why are gas thermometers are more sensitive than mercury thermometers?
  • Question-7. Can the temperature of a body be negative on the kelvin scale?
  • Question-8. Mercury boils at 357ºC. How can then a mercury thermometer be used to measure temperature upto 500ºC?
  • Question-9. Why the temperature above 1200ºC cannot be measured accurately by a platinum resistance thermometer?
  • Question-10. Why is a constant volume gas thermometer preffered as a standard thermometer than a constant pressure gas thermometer?
  • Question-11. A body at higher temperature contains moer heat, comment.
  • Question-12. Do all solids expand on hetaing?
  • Question-13. Why does a solid expand on heating?
  • Question-14. Is the temperature coeficient always positive?
  • Question-15. Why a small gap is left between the iron rails of railway tracks?
  • Question-16. Why are loops provided in long metal pipes used for cappying oil and any other liquid over long distances?
  • Question-17. Why must telephone or power lines necessarily slag a little?
  • Question-18. A brass disc fits snugly in a hole in a steel plate. Should we heat or cool the system to loosen the disc from the hole?
  • Question-19. A tightened glass stopper can be taken out easily by pouring hot water around the neck o the bottle. Why?
  • Question-20. Thick bottomed drinking glasses frequently crack if hot water poured into them. Why?
  • Question-21. Why iron rims are heated red hot before being put on the cart wheels?
  • Question-22. In riveting boiler plates, red hot riverts are used. Why?
  • Question-23. How does the diameter of the opening in the cast iron plate of a kitchen stove change, when the stove is heated?
  • Question-24. Explain why a beaker filled with water a 4ºC overflows if the temperarure is decreased or increased?
  • Question-25. Is J a physical quantity?
  • Question-26. Why is J called a converter factor?
  • Question-27. A thermous bottle containing water is vigorously shaken. What will be theeffect on the temperature of water?
  • Question-28. When we rub oue hands, they are warmed but only to a certain maximum temperature. Why?
  • Question-29. There is a slight temperature differnces between the water all at the top and the bottom. Why?
  • Question-30. Why do the brake drums of a car get heated, when the car moves down a hill at a constant speed? 
  • Question-31. Can a given amount of mechanical energy be completely converted into heat?
  • Question-32. A match stick can be lighted by rubbing it against a rough surface. Why?
  • Question-33. If an elctric fan be switched in a closed room, will the air of the room be cooled? If not, why do we feel cold?
  • Question-34. Give an example of a system in which no heat s transferred to or from a system but the temperature of the system changes.
  • Question-35. What is the differences between the specific heat and the molar specific heat?
  • Question-36. Why water is preffered to any other liquid in the hot water bottles? 
  • Question-37. Why juice bottles are placed under water in the cold countries? 
  • Question-38. Why is water used as an eective coolant?
  • Question-39. What kind of thermal conductivity and specific heat requirments would you specify for cooking utensils?
  • Question-40. Why do metal utensils have wooden handles? 
  • Question-41. Why birds are often seen to swell their feathers in winter?
  • Question-42. Why an ice box is constructed with a double wall? 
  • Question-43. Why are two thin blankets are warmer then a single blanket of double the thickness? 
  • Question-44. A squirrel wraps its bushy tail round its body during its winter sleep.Why?
  • Question-45. Calorimeters are made of metals not glass.Why?
  • Question-46. When we step barefoot into an ofice with a marble floo, we feel cold. Why? 
  • Question-47. Why we can easily boil water in a paper cup?
  • Question-48. A piece of wire gauze is placed over the Bunsen burner. If the gas is turned on below the gauge, will the flame go above the gauge?
  • Question-49. Woole clthes are warm in winter. Why?
  • Question-50. Why do we use copper gauze in davy's afety lamp?
  • Question-51. Stainless steel cooking pans are perferrred with extra copper bottom. Why?
  • Question-52. Usually a good conductor of heat is a good conductor of elcectricity also. Give reason?
  • Question-53. Why do elctrons in insulator or not contribute towards its thermal conductivity? 
  • Question-54. Why felt rather than air is employed for thermal insulation?
  • Question-55. I air is poor conductor of heat, why do we not feel warm without clothes?
  • Question-56. Why small holes are provided at the bottom of the chimney of the lamp?
  • Question-57. Why rooms are provided with the ventilators near the roof?
  • Question-58. Why it is much hotter above a fire than by its side? 
  • Question-59.  Why snow is a better heat insulator than ice? 
  • Question-60. Water is heated from below. why? 
  • Question-61. Why are the cooling coils fitted near the ceiling of a refrigerator?
  • Question-62. Why do animals curl 8 into a ball, when they feel very cold?
  • Question-63. Why a body with large reflectively is a poor emitter? 
  • Question-64. Why does a piece o red glass absorbs green colour strongly. But at higher temperatures, it emits green colour strongly. 
  • Question-65. Is it necessary that all black coloured objects should be considered black bodies?
  • Question-66. Why are clear nights colder then cloudy nights?
  • Question-67. A hole in the cavity of a radiation is a black body. Why?
  • Question-68. Why is there the word displacement in Wien's displacement law?
  • Question-69. Black body radiation is white. Comment.
  • Question-70. Which object will cool faster when kept in open air, the one at 300°C or the one at 100°C?
  • Question-71. In what respect is the respect is the thermal radiation different rom lights? 
  • Question-72. What is critical temperature? 
  • Question-73. Can a gas be liquified at any temperature by the increase of pressure alone?
  • Question-74. What is the pressure on melting point of a solid? 
  • Question-75. How does the boiling point of water change with pressure? 
  • Question-76. What is the temperature above which steam will not condense of water even i it is compressed to very large pressure? 
  • Question-77. What is the significance of negative slope of ice line of water? 
  • Question-78. Are the relative amounts of ice, water and vapour fixed at the triple point of water?
  • Question-79. What happens if water vapour at a pressure of 0.004 atm is cooled to 0°C?

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    In riveting boiler plates, red hot riverts are used. Why? - Physics class 0

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