Hydraulics & Pneumatics Test Questions

Q.  What is the difference between signal air and control air?

a. signal air actuates final control valve and control air flows to the cylinder through the final control valve for forward and backward movement of pis
b. control air actuates final control valve and signal air flows to the cylinder through the final control valve for forward and backward movement of pis
c. both a. and b.
d. none of the above


ANSWER: See Answer
 
No explanation is available for this question!
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