Why is post-weld heat treatment sometimes necessary for welded vessels?

0 Answers   Aramco,

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What are the three classes of organic solvents?

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What are the factors involved in considering the choice of dry screw compressor?

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What are the factors involved in designing kettle type reboiler?

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Three solid objects of the same material and of equal mass – a sphere, a cylinder (length = diameter) and a cube – are at 5000C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change of temperature is smallest for a) cube b) cylinder c) sphere d) equal for all the three whyyyyyyy???????

3 Answers   GATE,

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QUANTUM CHEMISTRY AND CHEMICAL ENGINEERING - EXAMPLE 31.9 : When an algebraic product is defined on the space, the Lie bracket is the commutator [x,y] = xy - yx according to Lie algebra in mathematics. If [p,x] f(x) = px f(x) - xp f(x), p = -ih d / dx, find the value of [p,x] in term of i and h.

1 Answers  

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how to design a heat exchanger?

3 Answers   TATA,

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What is the ignition temp. of Aluminum,Coper&Iron.

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What is condensate lift?

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why 14.7 pound/inch2 is used in idustries as unit of pressure bcz here not sea level and not a temperature is 0C (zero degree celcius)?????????

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Why catalyst is charging in chemical reaction as high pressurized pellet of tablet?

2 Answers  

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i badly need a chemical process details for making a project...plz help me out......i m a btech final yr chemical engg student in a govt univ,and we have to make a detailed project on any chemical process with contents like...intro,kinetics , material balance,thermodynamics,process layout,process design,physical conditions,plant location,cost estimation etc.............if any one could help me i will never forget hi thankless work and always try to help u in whatever u ask.............

2 Answers  

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