The advantage of the piston valve over D-slide valve is that in the former case________?
Apower absorbed is less
Bthere is overall economy of initial cost, maintenance and operation
Cwear is less
Dboth wear and power absorbed are low
Ethe pressure developed being high provides tight sealing
Correct answer
D. both wear and power absorbed are low
Explanation
The correct answer is both wear and power absorbed are low.