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For the adiabatic expansion of a perfect gas through a turbine, show that the overall efficiency ηt and small stage efficiency ηp are related by
where , and r is the expansion pressure ratio, γ is the ratio of specific heats. An axial flow turbine has a small stage efficiency of 86%, an overall pressure ratio of 4.5 to 1 and a mean value of γ equal to 1.333. Calculate the overall turbine efficiency.
Find the terminal velocity of an 8.5-inch-diameter sphere weighing 16 lbf falling through the following fluids under the action of gravity: (a) the standard atmosphere at sea level; (b) the standard atmosphere at 10,000 ft elevation above MSL; (c) wa..
estimate the diffusion coefficient at 25degc of trace of ethanol in water and of traces of water in ethanol. viscosity
As part of an Aircraft engineering management team you are to recommend types of protective clothing and equipment to personnel for the following situations/ environment;
the shaft of a gearbox is coupled through a no. 60 chain drive rotating a concrete mixer at 180 rpm clockwise. the
Calculate the polar moment of inertia of an assembly and using the result to predict the periodic time of a trifilar suspension of the assembly.
a spring-mass-damper system is subjected to a harmonic force. the amplitude is found to be 20mm at resonance and 10mm
air at 30 celcius and 2 mpa flows at steady state in a horizontal pipeline with a velocity of 25ms . it passes through
a solid cylindrical specimen 200-mm high is compressed to a final height of 60 mm in two steps between frictionless
a steel jacket e 200 gpa and v 0.3 having an inside diameter of 150 mm and an outside diameter of 200 mm is shrunk
a supersonic nozzle is also a convergent-divergent duct which is fed by a large reservoir at the inlet to the nozzle.
The mass of refrigerant is 0.5 lb. During the process, heat transfer to the refrigerant from its surroundings is 1.2 Btu while the work done by the refrigerant is 4.32 Btu. Determine the final temperature of the refrigerant, in °F. Kinetic and pot..
Air is compressed at steady state from 1 bar, 300 K to 5 bar 500 K using 150 kW of power. The compressor produces 50 kW of heat that is transferred to the surroundings. Assuming an ideal gas determine the mass flow rate of the fluid.
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