Q37
Air consumption by down the hole hammer drills at . . . . . . . .
A.
7 kgf/cm2 is 5.5m3/min
AnswerB.
9 kgf/cm2 is 6.5m3/min
C.
10 kgf/cm2 is 8.5m3/min
D.
6 kgf/cm2 is 4m3/min
Answer: Option A
Solution
Answer: Option A
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