What maintenance and safety pointers should you bear in mind when performing an air drill operation?
What will be an ideal response?
When performing any air drill operation, keep the following maintenance and safety pointers in mind:- Clean chuck jaws occasionally to prolong service life. Use sharp drills; they require far less effort and put less strain on the tool.- To avoid the danger of breakage from high breakthrough torque, use properly sharpened twist drills and reamers, and select the proper drill speed.- Start drilling at a low speed and gradually increase it. Avoid kickback by easing up at breakthrough.
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A synchronous motor can be reconnected as a(n) ____ to provide faster stopping.
a. alternator b. DC generator c. regulator d. accelerator
Technician A says valve lash can be set on some engines when it is running. Technician B says to break in the rings, on the highway accelerate to 50 mph and coast back to 35 mph at least 10 times. Who is right?
A. Technician A B. Technician B C. Both technicians D. Neither technician
Provide some suggestions as to how the following processes could have lower degrees of irreversibility:
(a) a piston sliding against a cylinder wall; (b) condensing water vapor at 1 atm; (c) heating a metal to its melting point in a furnace. What will be an ideal response?
?Which of the following gases is the least dense?
A. ?Oxygen B. ?Carbon dioxide C. ?Argon D. ?Helium