Chapter 17 Test Your Knowledge questions
1. The size of a lathe is determined by the
It is
the distance from the lathe bed to the center of the
spindle.
2. How is the cup center removed from the tailstock ?
3. What is centrifugal force? The force that is needed to keep
an object moving.
4. When the wood stock is mounted between the lathe centers,
this is called
a. Spindle turning
5. Outline the procedure for mounting stock between centers.
6. When the skew is used to make a shearing cut, the
rides on the surface that is being cut.
7. Cutting beads and V-grooves with the skew is the easiest of
the turning operations. True or False

A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.

Wiy doeres rere okhn a pump whon working betwon the same pressure range?