Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 14, Problem 5P
- a. Calculate the proportional band of a temperature controller with a 5% bandwidth and a set-point of 500°F.
- b. Calculate the upper and lower limits beyond which the controller functions as an on/off unit.
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Write a program that simulates a Magic 8 Ball, which is a fortune-telling toy that displays a random response to a yes or no question. In the student sample programs for this book, you will find a text file named 8_ball_responses.txt. The file contains 12 responses, such as “I don’t think so”, “Yes, of course!”, “I’m not sure”, and so forth. The program should read the responses from the file into a list. It should prompt the user to ask a question, then display one of the responses, randomly selected from the list. The program should repeat until the user is ready to quit.
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Chapter 14 Solutions
Programmable Logic Controllers
Ch. 14 - Compare continuous and batch processes.Ch. 14 - Prob. 2RQCh. 14 - State the basic function of each of the following...Ch. 14 - State the purpose of each of the following types...Ch. 14 - Prob. 5RQCh. 14 - Prob. 6RQCh. 14 - Prob. 7RQCh. 14 - Prob. 8RQCh. 14 - Prob. 9RQCh. 14 - Prob. 10RQ
Ch. 14 - Prob. 11RQCh. 14 - What term of a PID control is designed to...Ch. 14 - Prob. 13RQCh. 14 - Prob. 14RQCh. 14 - Prob. 15RQCh. 14 - Prob. 16RQCh. 14 - Prob. 17RQCh. 14 - Prob. 18RQCh. 14 - Prob. 19RQCh. 14 - List four types of communication tasks provided by...Ch. 14 - Prob. 21RQCh. 14 - What are the three general levels of functionality...Ch. 14 - Prob. 23RQCh. 14 - Prob. 24RQCh. 14 - Compare device and process bus networks.Ch. 14 - Prob. 26RQCh. 14 - Prob. 27RQCh. 14 - Prob. 28RQCh. 14 - Prob. 29RQCh. 14 - Summarize the collision detection network access...Ch. 14 - Prob. 31RQCh. 14 - Prob. 32RQCh. 14 - Prob. 33RQCh. 14 - Prob. 34RQCh. 14 - Prob. 35RQCh. 14 - Prob. 36RQCh. 14 - Prob. 37RQCh. 14 - Prob. 38RQCh. 14 - Prob. 39RQCh. 14 - Explain how redundant media works.Ch. 14 - Prob. 41RQCh. 14 - Prob. 42RQCh. 14 - Prob. 43RQCh. 14 - Prob. 44RQCh. 14 - Summarize the two main functions of a SCADA...Ch. 14 - Prob. 46RQCh. 14 - Prob. 1PCh. 14 - Prob. 2PCh. 14 - How would an on/off controller respond if the...Ch. 14 - In a home heating system with on/off control, what...Ch. 14 - a. Calculate the proportional band of a...Ch. 14 - Prob. 6PCh. 14 - Prob. 7PCh. 14 - Prob. 8P
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