Automation System – Section 3

21. A Hall effect switch is usually used to:

A.,  measure voltage
B. measure temperature
C. sense a vacuum
D. sense the presence of a magnetic object.
E. None of the above

Correct Answer: D. sense the presence of a magnetic object.

22. The hardware device Jhat acts as both a switching and connecting unit is called a(n):

A. concentrator
B. RS-232C port
C. multiplexer
D. communications processor
E. None of the above

Correct Answer: C. multiplexer

23. The addition of _____ can reduce processing time.

A. A buffer
B. An EPROM
C. A converter
D. A co-processor
E. None of the above

Correct Answer: D. A co-processor

24. Which of the following method is used the results of a design analysis as a base for redesign decisions?

A. The iterative design method
B. The direct method
C. The design selection method
D. All of the above
E. None of the above

Correct Answer: A. The iterative design method

25. What kind of capability is required if one plans to interface with a plotter or printer?

A. A graphics cable
B. RGB monitor
C. A graphics board
D. A co-processor
E. None of the above

Correct Answer: C. A graphics board

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