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1. Mass transfer coefficients can be of either local or overall type.
a. Explain carefully what the local and overall mass transfer coefficients represent.
b. How does the concentration gradient for the molar transfer rate differ when expressing the transfer in overall and local transfer coefficients respectively?
2. a. Explain the problems of flooding and channeling in packed tower
b. Explain the construction and working of sieve tray, bubble cap tray and counterflow tray
3. Explain the differences between overall, Murphree and point tray efficiency.
Zinc has hcp structure. In a unit cell of zinc, the zinc atoms occupy 74% of volume of unit cell.
HOW CAN I BE ABLE TO CONTROL AND BALANCE THE INPUT AND OUT-PUT
Q. Define flash and fire points and its determination. OR Write short note on: Flash and fire points. Ans. Flash and fire points:
to determine the emf of cell uaing pottentiometre
What is Spheroidsing Spheroidsing is the method that applies more to the hypereutectoid steels (above 0,8% C). The process includes heating the metal to between 600oC and 65
Explain Dipole Relaxation Dipole Relaxation is the method, occupying a specific period of time after a change in the applied electric field, in which the orientation polariza
hu
Why protons doesn''t react which each other?
a) The vacuum in the headspace of a can of food is normally formed by "hot fill" exhausting - that is, the cans are closed when the can is filled with product at a temperature o
Explain Ferromagnetic materials Ferromagnetic materials are those with spontaneous magnetic alignment. Ferromagnetism is the property of a material to be powerfully attracted
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