ControlNet is ________
A) An open network standard that uses the producer/consumer network model to efficiently exchange time-critical application information in control systems
B) A low-cost communications single cable network with input and output devices with an embedded microprocessor for network communications
C) An open industrial networking standard that takes advantage of commercial off-the-shelf Ethernet hardware
D) A vendor-specific network for use with AB hardware
A
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A metal bellows-actuated control is used for pressures up to ____ pounds per square inch (psi).
a. 40 b. 100 c. 2000 d. 4000
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PROBLEM 3.153 The solid cylindrical rod BC is attached to the rigid lever AB and to the fixed support at C. The vertical force P applied at A causes a small displacement ? at point A. Show that the corresponding maximum shearing stress in the rod is
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A) Are not as accurate as the factory manuals B) Have many labor times that are lower than those in factory manuals C) Do not take into account extra time for older vehicles with worn parts D) Are developed based on direct surveys of industry shops