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Air at 1.02 bar, 22°C, initially occupying a cylinder volume of 0.015 m 3 , is compressed reversibly and adiabatically by a piston to a pressure of 6.8 bar. Calculate :
(i) The final temperature
(ii) The final volume
(iii) The work done on the mass of air in the cylinder.
1 kg of air at 1.02 bar, 20°C is compressed reversibly according to a law pv 1.3 = constant, to a pressure of 5.5 bar. Calculate the work done on the air and heat flow to or from the cylinder walls during the compression.
Water flows steadily into a tank through pipes 1 and 2 and discharges at steady rate out of the tank through pipes 3 and 4. Determine the mass rate of flow and the discharge from pipe 4, and the maximum velocity in pipe 4
State any two applications of jigs in the engineering laboratory as stated in mechanical engineering
A cylindrical drill with radius r1 is used to bore vertically a hole through the centre of a sphere of radius r2.
The vertical distance above the centerline of the pump inlet to the point of free discharge or surface level
a rigid tank contains 5 kg of refrigerant-134a initially at 20degc and 140 kpa. the refrigerant is now cooled while
A layer of water flows down an inclined fixed surface with the velocity profile shown in Fig. Determine the agnitude and direction of the shearing stress that the water exerts on the fixed surface for U = 3 m/s and h =0.1 m.
estimate the nominal size of the smallest sae grade 1 standard unc bolt that will not yield under a tightening torque
The drag, d, on a washer-shaped plate placed normal to a stream of fluid can be expressed as D = f(d1, d2, V, μ, ρ) where d1 is the outer diameter, d2 the inner diameter, V the fluid velocity, µ the fluid viscosity, and ρ the fluid density. Some ..
An exothermic process occurs uniformly throughout a 10-cm-diameter sphere (k = 300 W/m.K, cp = 400 J/kg.K, ? = 7500 kg/m3), and it generates heat at a constant rate of 1.2 MW/m3. The sphere initially is at a uniform temperature of 20oC, and the exoth..
a turbulent boundary layer exists in the flow of water at 20degc over a flat plate. the local shear stress measured at
For the following pair of polymers, state whether or not it is possible to determine whether one polymer is more likely to crystallize than the other. Linear and syndiotactic polypropylene-Cross linked cis-isoprene
round your final answers to three decimal places. the liquid leaving the condenser of a 115000-btuh heat pump using
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