M

Mr. Dubey • 52.33K Points
Coach 

Q. How does the piston in the clamping unit move?

(A) hydraulic energy
(B) pneumatic energy
(C) heat energy
(D) suction

Explanation: 
 there is a clamping unit employed for holding the two halves together and for the opening and closing of the mold. a moving piston is provided which operates the power press. this piston works on hydraulic energy.

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