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A 3-module, 20° hob is used to cut a spur gear. The hob is right-handed with a lead angle of 2°40', a length of 75 mm, and an outside diameter of 75 mm Make a full-size sketch of the hub cutting a 48-tooth spur gear. The gear blank is 38 mm wide. Show the pitch cylinder of the hob on top of the gear blank with the pitch helix of the hob in correct relation to the pitch element of the gear tooth. Show three tooth elements on the gear and 1 turns of the thread on the hob; position these elements by means of the normal circular pitch. Label the axis of the hob and gear blank, the lead angle of hob, and the direction of rotation of the hob and gear blank.
If the tube surface temperature at the exit is Ts,o 160°C, determine the heat rate entering the tube. Evaluate properties at T 400 K.
n air compressor operates at steady state with air entering at p1 1 bar t1 17 c and exiting at p2 5 bar. the air
What is the minimum energy expenditure required for the transfer?
A solid metallic rod & beams are similar to look but ASME treat them as different components, can anyone tell what's the real difference between them ?
Draw a standard (001) projection of white tin (tetragonal c/a=0.545), showing all poles of the form {001}, {100}, {110}, {011}, {111} and the important zone circles between them.
a curved nozzle assembly that discharges water to the atmosphere is shown. the nozzle mass is 4.5 kg and its internal
An aquifer has a hydraulic conductivity of 12 ft/day and an effective porosity of 17% and is under a hydraulic gradient of 0.0055 m/m. Calculate the specific discharge in m/s. Calculate the average linear velocity in m/s.
A curde oil storage tank the tank initially contains 1000m^3 ofcrude oil. Oil is pumped into the tank through a pipe at a rate of 2m^3/min and out of the tank at a velocity of 1.5m/s through another pipe having a diameter of 0.15m. the crude oil has ..
the 2 mg car increases its speed uniformly from rest to 25 ms in 30s up the inclined road. determine the maximum power
The inner and outer surfaces of a 5 mm window glass are maintained at 10°C and 3°C. What is the amount of heat transfer through the glass in 5 hrs?
The temperature and heat flux are plotted assuming radial symmetry, that is, even though the sensors are on both sides of the center line, they are plotted from one side only. Discuss whether or not you feel this is a good assumption. If so, are ther..
a straight roller bearing is subjected to a radial load of 12 kn. the life is to be 4000 h at a speed of 750 revmin.
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