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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?
Differentiate Reaction turbine and Impulse turbine (steam turbines) (b) In a De Laval turbine, steam issue from the nozzle with a velocity of 850 m/s. The nozzle angle is 20 o C
Discover the torque on the shaft: A steel shaft transmits 105 kW at 160 rpm. If the shaft is 100 mm diameter, discover the torque on the shaft and the maximum shear stress ind
The press tressed bridge structure would look like as shown below, The following factors influences the decision to select the particular prestressing, 1/Span of br
Q. Explain the terms centre of gravity and centroid. Sol. : A point can be found out in a body through which resultant of all such parallel forces acts. This point through
why there is a different angular velocity in the two cranks of a drag link mechanism?
Objectives After studying this section, you should be capable to understand: Cell aspects of scheduling, Conventional priority rules, Newer approaches to on line
STEAM ENGINE MAIN PARTS: Connecting Rod: It connects cross head with crank on other side. Crank Shaft: It is output shaft on which the mechanical power which is a
Q. For an electromagnetic system, show that the energy stored in a magnetic field is equal to the area enclosed b/w magnetization curves for open and closed position of the armat
Replacement model
A 50 mm dia. jet having a velocity of 18 m/sec. impinges without shock on a flat plate inclined at an angle to the axis of jet. If the plate is moving at 5 m/sec in the direction o
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