Reason (R): It is controlled and done by valves.
A. Both A and R are true and R is not correct explanation of A.
B. Both A and R are true but R is not correct explanation of A.
C. A is true but R is false
D. A is false but R is true
Answer:A
Reason (R): It is controlled and done by valves.
A. Both A and R are true and R is not correct explanation of A. B. Both A and R are true but R is not correct explanation of A. C. A is true but R is false D. A is false but R is true
Explanation: Valves is defined as any device by which the flow of liquid can be controlled by obstructing the flow of liquid and is all but impossible to design a practical fluid power system without some means of controlling the volume and pressure of the fluid.