Engineering, 11.09.2019 03:20 xonyemaa12
Air is contained in a vertical piston–cylinder assembly such that the piston is in static equilibrium. the atmosphere exerts a pressure of 101 kpa on top of the 0.5-m-diameter piston. the gage pressure of the air inside the cylinder is 1.2 kpa. the local acceleration of gravity is g = 9.81 m/s2 . subsequently, a weight is placed on top of the piston causing the piston to fall until reaching a new static equilibrium position. at this position, the gage pressure of the air inside the cylinder is 2.8 kpa. determine (a) the mass of the piston, in kg, and (b) the mass of the added weight, in kg
Answers: 3
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
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
Engineering, 04.07.2019 18:10
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
Answers: 1
Engineering, 04.07.2019 18:10
Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery
Answers: 2
Air is contained in a vertical piston–cylinder assembly such that the piston is in static equilibriu...
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