Engineering, 01.08.2020 16:01, shaylawaldo11

# A hollow shaft of diameter ratio 3/8 (internal dia to outer dia) is to transmit 375 kW power at 100 rpm. The maximum torque being 20% greater than the mean torque. The shear stress is not to exceed 60 N/mm2 and twist in a length of 4m not to exceed 2o. Calculate its external and internal diameters which would satisfy both the above conditions. (G= 0.85 X 105 N/mm2)

Answers: 3

Engineering, 26.09.2019 22:00, mfox793

Refrigerant 22 undergoes a constant-pressure process within a piston–cylinder assembly from saturated vapor at 3.5 bar to a final temperature of 25°c. kinetic and potential energy effects are negligible. evaluate the work and the heat transfer, each in kj per kg of refrigerant.

Answers: 3

Engineering, 26.09.2019 21:30, Galaxie85111

Space-shuttle main engine is designed with the given criteria x design altitude = 60,000 feet (18,300 m), where atmospheric pressure is, patm=7171.64 pa= 1.04016 psi. at this altitude the exhaust jet is fully expanded. x nozzle exit mach number = 5.05 (calculated) x throat area = 93 square inches (600 cm2) x nozzle exit area = 50.265 square feet (4.6698 m2 ) x chamber total pressure = 2,747 pounds per square inch (18,940 kpa) at 100% power assuming you can use the 2-d shock/expansion theory: calculate the static pressure at the nozzle exit plane and the flow-turning angle right after the flow exits the nozzle at: x sea level, where patm = 101325 pa =14.696 psi x b) 100,000 feet, where patm = 1090.16 pa = 0.158 psi

Answers: 1

Engineering, 03.07.2019 15:10, EmilySerna

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Answers: 1

A hollow shaft of diameter ratio 3/8 (internal dia to outer dia) is to transmit 375 kW power at 100...

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