Refer to the drawing of four bistable symbols (see figure below).
A temperature controller uses a bistable that turns on to actuate a warning light when the controlled temperature reaches a low setpoint.
The warning light extinguishes immediately after the temperature increases above the low setpoint.
Which one of the following bistable symbols indicates the characteristics of the bistable?
A. 1.
B. 2.
C. 3.
D. 4.
Show Answer
Answer: A
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