The standard pneumatic transmission signal most generally used in the United States is:
A. 3 to 27 psi
B. 10 to 50 psi
C. 3 to 15 psi
D. 2 to 12 psi
Answer:C
The standard pneumatic transmission signal most generally used in the United States is:
A. 3 to 27 psi B. 10 to 50 psi C. 3 to 15 psi D. 2 to 12 psi