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1. Air at standard temperature and pressure flows at a rate of 7.0 cfs through a horizontal, galvanized iron duct that has a rectangular cross-sectional shape of 12 in. by 6 in. Estimate the pressure drop per 200 ft of duct.
2. Air flows through a rectangular galvanized iron duct of size 0.30 m by 0.15 m at a rate of 0.068 m3 /s. Determine the head loss in 12 m of this duct.
Verify that the exact solution from Prob. P4.80 is consistent with your result in part (a).
A three-point bending test was performed on a glass specimen having a square cross-section of 15 mm length on each edge. The specimen fractured at a load of 4770 N when the distance between the support points was 41 mm.
Suggest why it is important to make a distinction between developing the user requirements and developing system requirements in the requirements engineering process.
Refrigerant 134a at a flow rate of 0.5 lb/s enters a heat exchanger in a refrigeration system operating at steady state as saturated liquid at 20 degrees Fahrenheit at a pressure of 20lbf/in^2. A separate air stream passes in counter flow to the refr..
A certain piston cylinder assembly has a stroke of 85mm, a connection rod length of 130 mm and a piston pin offset of 2mm. Calculate the displacement, velocity and acceleration of the assembly operating at 2200 RPM. If the same configuration is used ..
Argon gas initially at 140 kPa, 10C is contained in a cylinder fitted with a piston. The initial volume of the gas is 0.2m^3. The gas is now compressed in a poly tropic process, PV^(1.4)=constant, to a final pressure of 700 kPa assuming ideal gas beh..
1 A simple cycle stationary gas turbine has compressor and turbine efficiencies of 0.85 and 0.9, respectively, and a compressor pressure ratio of 20. Determine the work of the compressor and the turbine, the net work, the turbine exit temperature,..
A pot of water is boiling on a stove supplying 325 W to the water. What is the rate of mass (kg/s) vaporizing assuming a constant pressure process?
Air is compressed by an adiabatic compressor from 95 kPa and 27°C to 600 kPa and 277°C. Assuming variable specific heats and neglecting the changes in kinetic and potential energies, determine (a) the isentropic efficiency of the compressor and (b) t..
A bar with dimensions of 20*50*200 cm is under tension from its two ends along its length, assuming that the material is 4340 steel with yield strength = 995 MPa and UTS strength = 1400 MPa, what is the maximum load (in units of N) you would ..
the volume of a hemispherical storage tank as a function of its height is given by vt pirh2t - pi3h3t where r is the
thin fins with a 0.002m by 0.02m rectangular cross section and thermal conductivity of 50 wmk protrude from a wall and
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