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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.
Let consider the breakwater configuration shown in the figure below. The incident wave conditions at the breakwater are a wave height of 1.5m, wave period of 7.0s and a wave crest
Determine the acceleration of the body: Two weights P and Q are associated by the arrangement shown in Figure. Neglecting friction and the inertia of the pulleys and cord, det
SIGNIFICANCE OF DEFECTS IN WELDS In the correct sense of the word, a defect is a rejectable discontinuity or a flaw of rejectable nature. Certain flaws acceptable in one t
Space Time Structure If the position of the particle P changes, the differential change in its position vector r is, in general, given by, d r = d x i + d y j + d z k
Smallest value of constant horizontal force: A particle containing a mass of 8 kg starts from rest and attains a speed of 1.5 m/sec in a horizontal distance of 10 m. imagine a
comparing the different coding systems ?
Find out angular displacement of a partical: The angular displacement of a rotating body starting from rest is defined by φ (t ) = 4 t 3 - 3 t 2 . Find out its angular di
A straight rod of length L is released on a friction less horizontal floor in a vertical position . As it falls( also slips) , the distance of a point on the rod from the lower end
impartance of moulding sand
a petrol tanker uses gravity to empty its 35kl tank in to an underground storage tabk. the hose that is used has a roughness equivalent to galvanised iron, has an internal diameter
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