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Engineering, 19.07.2019 22:20 rebekahwirogo
Consider a square-thread power screw that is on the verge of overhauling. ignore the collar friction. a) what is the expression of the efficiency as a function of the coefficient of friction? b) if the coefficient of friction is 0.14, what is the efficiency? c) add sketches to illustrate the meaning of all variables.
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Engineering, 04.07.2019 18:20, maustin5323
Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]
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Engineering, 04.07.2019 18:20, kendrawalraven
The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?
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Consider a square-thread power screw that is on the verge of overhauling. ignore the collar friction...
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