Air friction clamping is achieved by the movement of ___

Air friction clamping is achieved by the movement of aluminium piston in a cylinder when

A. piston will have close fitting in the cylinder so,that no air can pass from the circular contact between the two
B. piston will have small circular clearance so that air can pass with hinderance
C. piston will have circular clearance so that air can pass freely
D. none of the above

Show Answer

Answer: B

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