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Derive 3-D non-steady state conduction equation in spherical co-ordinates. Explain the assumption involved.
The hot combustion gases of a furnance are divided from the ambient air and its surroundings, which are at 25 oC, by a brick wall 0.15m thick. The brick has a thermal conductivity of 1.2W/mk and a surface emissivity of 0.8 . Under steady state conditions an outer surface temperature of 100 oC is calculated. Free convention heat transfer to the air adjoining the surface is divided by a convection coefficient of 20W/m2k. what is the brick inner surface temperature?
Evaluate the normal and tangential stresses: Q. 20: At the point in stressed body, the principal stresses are σ x = 80 kN/m 2 and σ y = 40 kN/m 2 . Determine the norma
WORKSHOP DISCIPLINES Following discipline tips should be made a part of life to become a good technician. These will certainly help in creating safe, friendly and clean enviro
what is interference and undercutting?
Q. W rite down the basic formula for maximum bending moment in some ideal cases. Sol.: Ber m together with nature of load Maximu
Concurrent force system: It state that if force acting at a point on a rigid body, it can be considered to act at any other point on its line of action, given this point is ri
Kinetics of a Particle: We have seen the effect of forces on a particle. The laws of motion for a particle are extended to include a system of particles or a rigid body. It is
Q. Describe about consumable electrode? This type of electrode is prepared from metal. Its one end is kept in electrode holder and then electric supply is passed through it. Th
Calculate the length of plastic deformation: Calculate the length of plastic deformation along 45 o in case the applied stress σ is 63.25% of yield stress in the plate of abo
In an engine working on Diesel cycle inlet pressure and tem are 1 bar and 17 o c respectively. Pressure at the end of adiabatic compression is 35 bar. He ratio of expansion i.e. af
Develop an EES Code for a Rankine cycle with reheat and with 2 open feedwater heaters. The cycle is shown below: Use the following conditions: 1. 700 psi, 850F 2. 500
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