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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.
State and define the bending equation and mention it''s units and derive it
RAILWAYS: Railway transport is one of the important modes of transport in India. Its technology is based on the traction of a group of wagons or coaches over a fixed track, co
what is surging ?
a) Why cutting fluids are used for machining of metals? List different types of cutting fluids and additives for cutting fluids. b) What factors are responsible for surface fin
Define strain: Sol. : STRAIN(e) : When the body is subjected to some external force, there is some change in dimension of body. The ratio between change in the dimension of b
(a) Calculate the unit step time response for a system with pulse transfer function (b) Calculate the pulse transfer function of a unity feedback discrete time system with
Discover the angle of twist: Discover the diameter of the shaft needed to transmit 60 kW at 150 r.p.m., if the maximum torque is possible to exceed the mean torque by 25% for
Parts of Aircraft The main parts of an aircraft are (Figure): (a) Engine, which propels the aircraft; the aircraft may have jet engines or propeller driving engines. (b
Dear Engineer! I have an aluminum tube(6061) fixed at one end (Cantilever Beam). The length is 180” and the load on the other end is 150 lbs. Question: What size of tubes I s
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