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1. Calculate the maximum torsional shearing stress in a 2 in. diameter solid circular shaft that transmit 30 hp at 500 rpm.
2. A 1½ in. diameter solid circular shaft transmits 15 hp with an allowable shearing stress of 10,000 psi. Find the rpm.
Argon enters a pipe at 100 kPa and 27oC and is compressed (via a compressor. meaning work is being done on the system) in an adiabatic, steady flow process to 200 kPa abd 100oC at the exit. Calculate the work required for this process in KJ/kg.
a liquid-vapor phase change process in microgravity conditions is carried out sufficiently slowly so that a one
a pneumatic lift system is being demonstrated at a sales show. the total load is 70 kg and the lift piston is 15.2 cm
A stream of air at 40 deg F, 30% rh flowing at 200 CFM is mixed with a stream of air at 95 deg F, 50% rh, flowing at 110 CFM. Determine the temperature and humidity ratio of the mixture.
a coil spring is stretched by two equal and opposite forces f120n. the wire diameter is 5 mm and the mean coil diameter
A window-mounted room air conditioner removes energy by heat transfer from a room and rejects energy by heat transfer to the outside air. For steady -state operation, the air conditioner cycle requires a power input of 0.434kw and has a coefficient o..
a 2.5 lbf block b is moving with a velocity vo of magnitude vo 6fts as it hits the 1.5 lbf sphere a which is at rest
a shaft which rotates at a constant speed of 160 r.p.m. is connected by belting to a parallel shaft 720 mm apart which
a frictionless piston-cylinder device contains 2 kg of nitrogen at 100 kpa and 300k. the nitrogen is compressed in a
2m^3 of N_2 at 200KPa and 20 deg.C is in a piston cylinder device. it is noe heated with 20 KJ of heat. Determine the total entropy charge on N_2 during a constant volume process assuming constant specific heat?
An air conditioner in the airport of Timbuktu runs a cooling system using R-410a with a high pressure of 1500 kPa and a low pressure of 200 kPa. It should cool the desert air at 45 degrees C down to 15 degrees C. Find the cycle COP. Will the syste..
During the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the work input during this process. R(air)=287j/KgK
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