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Q. Describe the term ‘Critical Insulation thickness'. What is its significance? Derive an expression for the critical insulation radius of a spherical system.
A bar of square cross-section connects two metallic structures. One structure is maintained at a temperature of 200o C and the other at 50o C. The bar is 20mm x 20mm in cross section and 100mm long and has a thermal conductivity of 60W/mK. The ambient air is at 20o C and heat transfer coefficient between the bar and the ambient is 10W/m2K. Derive an expression for the temperature distribution along the bar & calculate the steady state heat flow rate from the bar to the surrounding.
Assume the production function for a rm is given by the equation Q = L √K. Graph the isoquants corresponding to Q = 10, Q = 20, and Q = 50. Do these isoquants exhibit diminishing
Explain POINT ANGLE - Angle of drills It is also known as a cutting angle. Its most commonly used value for a large variety of materials is 118.Though,its varies from 80 to 140
Stud Welding This is an arc welding process in which the arc is struck between a metal stud or similar part and the base metal. The arc heats the mating ends to a proper tempe
Flow Work and Flow Energy - thermodynamics: Flo w Work: The flow work is energy needed to move the working substance against its pressure It is called as flow or displac
Disc Type Brake: As shown in Figure the disc brake consists of a pearlitic grey cast iron disc bolted to the wheel hub and a stationary housing called caliper. Casting in tw
Lifting machines: Basic definitions of the lifting machines and some lifting machines have been described. For each of these machines, derivation of the formulae for mechanica
can you help me to do my project on machine design,it is specific project with calculation and some draw.
Determine- cutting speed, Material removal rate and Machining time. A 150 mm long 12.7 mm diameter stainless steel rod is being turned to 12.19 mm diameter on a centre lathe.
Find out the velocity of the chain: Figure shows a metal chain ABC where portion BC is of length 0.4 metres and is hanging vertically, & portion AB of length 0.8 metres rests
why this great equation does not apply(involved) in nuclear reaction ?
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