Q6. “With reference to a four-ram hydraulic gear”, having duplicate pumps-
a) Sketch the arrangements of relief, make up, isolating and by-pass valves. (8)
b) Explain the use of isolating and by-pass valves, if one of the cylinders has fractured. (4)
c) Describe the arrangement provided to indicate the loss of hydraulic fluid due to leakage. (4)
