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A solid circular shaft has a diameter of 60 mm and is subjected to a tensile axial load of 200 kN, a bending moment of 3 kN-m, and a torque of 5 kN-m. A safety factor against yielding of 2 is required. What minimum yield strength must the shaft material have?
the net potential energy en between two adjacent ions is sometimes represented by the expression en -cr d exp-rpin
the drinking water needs of a residential hall with 20 students is to be met by a bubbler type water fountain. the
Air enters an adiabatic compressor at 0.1 kg/s, 100 kPa, 25 °C and exits at 700 kPa. (a) Draw a schematic of the system. Determine (b) the minimum power input (kW) and (c) the entropy generation rate (kW/K)
you are an engineer in an electric-generation station. you know that flames in the boiler reach a temp of 1200 k and
Examine the influence of the vibration on the grain size, microstructure and mechanical properties of aluminium-silicon alloys (Al-Si) during solidification.
for the ideal air standard diesel cycle with a volumetric compression ratio of 17 1 calculate the efficiencies for
100 lb of fluid food is heated by addition of 10000 btu of energy. if the food has initial temperature of 40degf and
Calculate the static thrusts of the rocket and turbojet engine described in the figure. The thrust T is the force necessary to prevent horizontal movement of the engine. Both engines exhaust a mass flow of 40 kg/s.
the annual cost of operating a heat pump at year-end prices is r with units of yr. the costs are expected to inflate at
an airplane traveling at 400 mph makes a 90-degree turn about a 2000 ft radius. calculate the average acceleration in
a rankine cycle is to drive an electric generator to produce 600 mw of electricity. the generator is 95 efficient.the
in the following experiment a constant-pressure calorimeter containing 100 ml of h20 is used.the initial temperature of
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