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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.
Illustrate how the Rankine cycle efficiency is improved by the following : a. Lowering the condenser pressure. b. Increasing the pressure of steam. c. Superheating the ste
(a) A geometrically similar model of spillway is to be laid to a scale of 1 in 50. Evaluate the velocity ratio, discharge ratio and acceleration ratio. (b) If model prototype ra
Q. Explain basic types of Sand testing? Moulding sands should be of proper quality to meet the required level of accuracy and surface finish of castings. Proper quality of the
Types of Friction There are basically two types of friction, (a) Dry Friction ( b ) Fluid Friction Dry Friction: Dry friction (also called as coulomb friction man
What is Hopper unit Two hydraulically operated folding type hoppers are provided on the front side of the machine. The capacity of the hopper is 4.25 CM.
Consider the frictionless piston-cylinder set-up with a linear spring as is shown below. The cylinder has an internal cross-sectional area of AC = 0.1 m2. Distances y 1 and y 4
Roller conveyors are flat circular or spiral. They consist of rollers supported in frames over which materials are allowed to move. They are driven through gravity. Genera
In motorcycle servicing we studied about various service tips for motorcycle servicing. These steps will ensure proper servicing of motorcycle and as a result customers will trust
Short answer Type. a) Write the difference Between Dry clutch and Wet ? b) What is difference Between Chasis and Frame? c) Illustrate the Future trends in Automobile
The following data was obtained from an orthogonal cutting test : Rake angle = 20o, Depth of cut = 6 mm Feed rate = 025 mm/rev Chip length before cutting = 29.4 mm Chip
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