Digital sensors are sometimes called discrete sensors because there are two discrete states: on or off.
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Q28: In the hardwired relay control circuit shown,
Q29: An electromagnet control relay is basically a(n):
A)electromagnet
Q30: In the relay shown, the coil would
Q31: In the motor starter circuit shown, the
Q32: In the relay shown, the contact No.
Q34: A limit switch is usually actuated by:
A)hand.
B)pressure.
C)contact
Q35: A proximity switch can be actuated:
A)without any
Q36: The motor starter coil M is:
Q37: The abbreviations NO (normally open) and NC
Q38: The device represented by the symbol is
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