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A piece of Al weighing 6 kg and initially at a temperature of 300OC is suddenly immersed in a fluid at a temperature of 20OC. The convectice heat transfer coefficient is 58 W/m2. 0C. Taking the Aluminum as a sphere having the same weight as that given, estimate the time require to cool the aluminum to 90 0C using the lumped-capacity method of analysis.
Requiremen t of Temperature Scale: The temperature scale on which temperature of the system can be read is required to assign the numerical values to the thermal state of the
Which conducts heat faster steel copper or brass? Ans) Copper conducts heat faster than steel or brass. Any material that is good for conducting heat is also good for electricit
Ceramics Ceramics are mostly inorganic crystalline materials characterized by high melting point and low ductility. Such materials are processed via methods other than melting
Stellite This is an alloy of Co as 40-60%, Cr as 25-35%, W as 4-25% and C as 1-3%. This is a cast alloy comprising C, W, and Cr in Cobalt matrix. Its major characteristic is l
Calculate force required for equilibrium: A member ABCD is subjected to the point loads P 1 , P 2 , P 3 an d P 4 as shown in the figure given below
The open square tube is subjected to the torque T= DEF Nm as shown in Fig Q2. The tube has the length 1m and wall thickness 5mm. a) Calculate the shear stress and angle of
Change in entropy for reversible
Explain the 3-2-1 Principle of Location A work piece can be positively located by means of 6 pins so positioned that collectively they restrict the work piece in nine of it
Resolving all of the forces normal to the inclined plane: A body weighing 500 N is resting on an inclined plane making an angle of 30 o with the horizontal. The coefficient o
Q. Illustrate process of Radiographic Examination? Radiographic examination of welded joints shall be performed when required by the Code or additionally when specified in this
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