What are the four primary parts of programmable logic controllers?
What will be an ideal response?
Programmable logic controllers can be divided into four primary parts:
A. The power supply
B. The central processing unit (CPU)
C. The programming terminal or program loader
D. The I/O (pronounced eye-oh) rack
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____________________ assembly drawings, sometimes called layout drawings, are used to show the fit and function of all of the various pieces that go into a completed assembly or subassembly.
Fill in the blank(s) with the appropriate word(s).
When pulling cable with a capstan, what is the maximum pulling speed that should utilized?
a. 10 feet per minute b. 20 feet per minute c. 40 feet per minute d. 75 feet per minute
Experts recommend that technicians attend how much refresher training each year?
A) 20 hours B) 40 hours C) 8 hours D) None of these
How can a hot water boiler heat water to 250°F and not boil the water?
A) Water treatment is added whose primary purpose is to raise the boiling point of the water. B) Hot water boilers cannot maintain 250°F water without boiling the water. C) The system is under enough pressure to raise the boiling point above the water temperature in the boiler. D) The water does boil, but the steam is vented to the air.