mid unit operations - National Institute of Technology...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: National Institute of Technology, Rourkela —— 769008 Mid— Semester Examination, 2012-13; B. Tech: 3rd Semester Subject: Unit Operations in Ceramic Processing; Sub ID: CR-Zl l; Full Marks: 60 Duration 01' Examination: 2 hrs Answer ALL Questions Q.No All parts of a question should be answered at one place Why the value of ‘crushing efficiency’ lies in a low range? Define ‘sphericity‘ of a particle. Define surface—volume mean diameter of particulate solid. State a few of the applications where the knowledge of particle size distribution is important. Derive Rittingers 121Wa Kicks “0”" . 2+2+2+6 D vs law and Bond’s law from the generalized equation: rig?) = —K =12 Derive critical speed of a ball mill. What technical importance it holds? Try to explain the consequences of the following cases from the production point of view. Case 1; the volume of (grinding media + feed material) is half of the chamber-volume. Case 11; the volume of (grinding media + feed material) is much more than half of the charnbel--Vo1ume _ Case 111; the volume of (grinding media + feed material) is less than half ofthe Chamber—volume. 4+2+6 = 12 _l_ 3 How do you design various bin storages? Compare the operations of belt conveyors and bucket elevators. Define ‘angle of repose’. Why the ‘angle of repose‘ is found to be less than the ‘angle of internal friction"? 6+4+2 = 12 _.__J 4 What is the ‘Degree of Pore Saturation’ (DPS)? Illustrate with suitable figure ofthe different consistency state while DPS value is increasing from ‘0’. Make a table to characterize different consistency state. 2+6+4=12 What criteria should you look for a mixer to mix v1scous material? Define mixing index for granular solid and paste. Derive the formula of ‘rate of mixing’. Describe briefly the construction and working of any mixer known to you. 2+2+2+6=12 ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern