Engineering, 19.03.2020 01:40 omarabady
Design a simple compound gearbox for an exact 22:1 ratio, using a compound gearset so that no ratio exceeds 2.9:1. Choose the number of teeth on each gear such that the gears are all approximately the same size and the pinions are all approximately the same size (no more than a 10 tooth difference between all the gears, no more than a 5 tooth difference between all the pinions, and all gears should have at least 20 teeth). The gearbox should have an input and output shaft on opposite sides of the gearbox with all gears in proper mesh. (Hint: you will need at least 3 gear pairs.)
Answers: 2
Engineering, 04.07.2019 18:10
Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.
Answers: 1
Engineering, 04.07.2019 18:10
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
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Engineering, 04.07.2019 18:10
Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.
Answers: 3
Engineering, 04.07.2019 18:10
Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.
Answers: 2
Design a simple compound gearbox for an exact 22:1 ratio, using a compound gearset so that no ratio...
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