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Q. Explain Sulphidation process?
The presence of sulphur converts the surface of the metal to a sulphide scale which is generally more destructive than an oxide scale. Sulphidation is highly dependent on the form in which the sulphur exists, and corrosivity generally increases as temperature increases. Resistance to attack is improved by the addition of Cr and Si, as well as Al to a lesser extent. The addition of nickel may contribute to sulphide scaling.
Find distance through which the body will penetrates: A body having mass 25kg falls on the ground from height of 19.6m. The body penetrates into ground. Find distance through
show that work and heat are path functions
(a) How are the cutting fluids classified ? Explain every class with a couple of lines. (b) A carbide cutting tool has tool life exponent n = 0.27. It gives a tool life of 60 mi
Q. Source of Materials? The user may restrict sources of fabrication materials. If there is a restriction, the prospective manufacturers must be informed at the time of biddin
Q. Describe Cold extrusion? • Cold extrusion is done at room temperature or near room temperature. • The advantages of this over hot extrusion are the lack of
Determine magnitude and direction of the resultant force: A system of forces is acting at the corner of a rectangular block as shown in the figure. Determine magnitude and di
estimating time of boring, turning,milling?
Find out tension in the rop: Two blocks A and B are associated as shown in Figure (a). Mass of block A is 15 kg and this is resting on a surface having a coefficient of fricti
TYPES OF WELDING
Cooling of storage tanks: A research involving using a bench top scale wind tunnel to investigate heat losses from storage tanks. A series of small scale model tanks have bee
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