Never use a circular saw that does not have an upper blade guard because the _____
a. trigger lock will not work properly
b. saw will not cut cleanly
c. guard protects you from touching the blade
d. saw kerf will be too wide
c
You might also like to view...
Water from rivers into which industrial, agricultural, and municipal wastes have been introduced upstream may require very extensive treatment
Indicate whether the statement is true or false
PROBLEM 3.21 Two solid steel shafts are connected by the gears shown. A torque of magnitude T = 900 N ยท m is applied to shaft AB. Knowing that the allowable shearing stress is 50 MPa and considering only stresses due to twisting, determine the required diameter of (a) shaft AB, (b) shaft CD.
The quality-assurance program for a certain adhesive formulation process involves measuring how well the adhesive sticks a piece of plastic to a glass surface. When the process is functioning correctly, the adhesive strength X is normally distributed with a mean of 200 N and a standard deviation of 10N. Each hour, you make one measurement of the adhesive strength. You are supposed to inform your supervisor if your measurement indicates that the process has strayed from its target distribution.
a. Find P(X ? 160), under the assumption that the process is functioning correctly. b. Based on your answer to part (a), if the process is functioning correctly, would a strength of 160 N be unusually small? Explain. c. If you observed an adhesive strength of 160 N, would this be convincing evidence that the process was no longer functioning correctly? Explain. d. Find P(X ? 203), under the assumption that the process is functioning correctly. e. Based on your answer to part (d), if the process is functioning correctly, would a strength of 203 N be unusually large? Explain. f. If you observed an adhesive strength of 203 N, would this be convincing evidence that the process was no longer functioning correctly? Explain. g. Find P(X ? 195), under the assumption that the process is functioning correctly. h. Based on your answer to part (g), if the process is functioning correctly, would a strength of 195 N be unusually small? Explain. i. If you observed an adhesive strength of 195 N, would this be convincing evidence that the process was no longer functioning correctly? Explain.
A difference between a straight heat-cool thermostat and a heat pump thermostat is that:
A) Y and W swap functions. B) Heat pump thermostats do not energize the fan in the heating cycle. C) Y is energized in both heating and cooling. D) Y is energized in heating instead of cooling.