Engine_2014 : General Subjects - 2800/3524
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| The controller set point of an automatic control system is 150°F (65.5°C). The valve closes when the output temperature reaches 160°F (71.1°C), and reopens when the temperature falls below 140°F (60°C).The type of positioning action in this controller is known as __________ . |
| A) one-position single-point |
| B) two-position single-point |
| C) one-position differential- gap |
| D) two-position differential-gap |
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