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Nitrides, Silicides and Sulfides
Nitrides contain very high melting point but initiate to oxidize at low temperature. They have poor resistance also to chemicals. Boron nitride have a graphite structure and thus exhibit lubricating properties. A type of boron carbide identified as Borazon produced via compressing beneath high pressure of 68000 atmospheres at a temperature above 1700oC has hardness equivalent to such of diamond. Borazon also has a excellent resistance to oxidation and can withstand a temperature of 1950oC.
Write the velocity relationship in orthogonal cutting. A bar of 75 mm dia. is reduced to 73 mm by a cutting tool while cutting orthogonally. If the mean length of cut chip is 73.5
what is cone friction?
Yoke or magnetic frame It is the outer cover of the machine. An even number of pole cores are bolted to the yoke. Its serves the following purposes 1. It gives mechanical su
Generation of Continuation It is assumed that a partial schedule (which may be empty schedule) is given. For this partial schedule, a number of possible continuations is genera
Derive the stability condition of a Four wheel Vehicle AND Two wheel Vehicle moving in a curved Path? Explain with working, measurement and construction of brake power by Rope b
Illustrate how the Rankine cycle efficiency is improved by the following : a. Lowering the condenser pressure. b. Increasing the pressure of steam. c. Superheating the ste
Illustrate the GKS system The user communicates with the graphic system via his program. The GKS system is embedded in the user program by an application-oriented layer and a l
1- Explain the rationale of using a small WD to improve resolution. 2- In a tungsten SEM , Why does a high accelerating voltage provide the potential for higher resolution? Why
how do you find the projectile motion or equation?
Manual Engineering Drawing: The physical object is to be drawn (Do not take photographs of the object or use it as a template that you trace with) in class as an isometric dra
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