Engineering, 05.10.2019 10:30 phyllides4930
A125 pound object needs to be lifted vertically one foot. you have a 2-inch diameter piston actuator with a 12-inch stroke connected to a 50 psi source of pressurized air. the mass is restricted by a set of guide rails, which limit it to vertical motion, and which use roller bearings with a friction coefficient of 0.002. can the object be lifted? how long will it take?
Answers: 2
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 04.07.2019 18:10
The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false
Answers: 2
Engineering, 04.07.2019 18:10
An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet
Answers: 3
Engineering, 04.07.2019 18:10
Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.
Answers: 2
A125 pound object needs to be lifted vertically one foot. you have a 2-inch diameter piston actuator...
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