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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.
Q. What is belt? How many types of belt are used for the transmission of power? Sol: The power or rotary motion from one shaft to the other at a considerable distance is
Q. Explain about Unit pipe racks? Unit pipe racks are the main arteries carrying the pipes and cables into the units, and as such should be centrally located. They are usually
(a) Illustrate cetane and octane rating of the fuels (b) Compare two adn four stroke cycle engines.
The steam that leaves the super-heater is expanded from 130bar at 535°C to 25.2bar at 310°C in a high pressure turbine. The steam from the exit of the HP turbine is reheated to 535
What do you known by Investment casting ? What are main materials used for building the investment pattern ?
Find out its centre of gravity: A square plate of uniform thickness and density is bent along M 1 M 2 till corner C coincides along with centre C′. Find out its centre of gr
At a point in a rectangular block of elastic material under strain, there is a tensile stress of 50MPa on one plane and a compressive stress of 30 MPa on a plane at right angles. T
Evaluatio n of the Internal Energy of Steam: It is actual heat energy stored in steam above the freezing point of water. We know enthalpy = internal energy + pressure ener
Calculation for Stress-strain carves: After reaching point D, if bar is strained further, a local reduction in cross section occurs in gauge length (that is, formati
Tension in the strings: Sol.: When weight is attached to string then it will be in tension. The diagrams are shown below to describe this particular concept.
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