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Problem -
A heat-treated steel shaft is to be designed to support the spur gear and the overhanging worm shown in the figure. A bearing at A takes pure radial load. The bearing at B takes the worm-thrust load for either direction of rotation. The dimensions and the loading are shown in the figure; note that the radial loads are in the same plane. Make a complete design of the shaft, including a sketch of the shaft showing all dimensions. Identify the material and its heat treatment (if necessary). Provide an assessment of your final design. The shaft speed is 310 rev/min.
What are some of the considerations that must be applied for gas and liquid thermal conductivity that are not important in thermal-conductivity measurements for solids?
Describe the general shape of the plot of total head versus pump capacity for centrifugal pumps.
The flow may be laminar or turbulent. (This problem was proposed originally as Example 1.8; on completion of this chapter, we now can solve it.)
a refrigerator cycle has a cop of 3 and removes 100kw of heat from a building which is kept at 23c. the device rejects
Firm i chooses qi(t) to maximise 1ri(t), assuming qj(t)=qj(t -1) for all j =l= i. What are the dynamic adjustment equations? Show that no matter which rm is the monopolist in period 0, the system moves to one of oscillations in which the Cournot so..
an insulation system is to be selected for a furnace wall at l000degc using first a layer of mineral wool blocks
Determine the maximum normal stress in a 300-mm diameter basketball that has a 2-mm wall thickness after it has been inflated to a pressure of.
The heat transfer coefficient in the oven is 25W/m^2K. Calculate rate of heat transfer per m^2 area.
Assuming that the orbit of the moon is a circle of radius 384 A? 103 km, determine the speed of the moon relative to the earth.
a study is to be made using liquid ammonia as the fuel in a gas-turbine engine. consider the compression and combustion
(a) In a throttling process, energy and exergy are conserved. (b) If unit costs are based on exergy, we expect the unit cost of the electricity generated by a turbine to be greater than the unit cost of the high-pressure steam provided to the turb..
a rigid 2-ft3 vessel contains water originally at 150of and 5.07 percent quality. the water is then heated until its
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