What mechanism is used to keep the cylinder and movable contacts stationary until the handle of the drum controller is moved by the operator?
What will be an ideal response?
The handle can remain stationary in either the forward or reverse direction due to a roller and a notched wheel. A spring forces the roller into one of the notches at each successive position of the controller handle to keep the cylinder and movable contacts stationary until the handle is moved by the operator.
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What will be an ideal response?
Each year, there are over ______ heart transplant operations performed in the United States alone
a. 10,000 c. 2,000 b. 6,000 d. 1,000
List some of the optional components that can be found on the low side of a refrigeration system
What will be an ideal response?
Technician A says that the sharp edges of spool valves should be rounded using 400 grit sandpaper. Technician B says that all valve body parts should be cleaned and then dried using low- pressure, filtered compressed air. Which technician is correct?
A. Technician A B. Technician B C. Both technicians D. Neither technician