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How does the piston in the clamping unit move?(a) Hydraulic energy(b) Pneumatic energy(c) Heat energy(d) Suction |
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Answer» Correct choice is (a) Hydraulic energy The best 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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