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Which of the following is not a power operated machine?

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+1 vote
in Foundry and Forging by (110k points)
Which of the following is not a power operated machine?

(a) Jolt machine

(b) Sand Slinger

(c) Pin lift machine

(d) Jolt squeeze machine

This question was addressed to me in semester exam.

I'd like to ask this question from Moulding Machines topic in chapter Moulding Machines & Special Moulding Processes of Foundry and Forging

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Best answer
The correct option is (c) Pin lift machine

The explanation is: The pin lift machine is a hand molding machine. The operations and withdrawing of the pattern from the mould in the hand molding machine is accomplished mechanically which is the working phenomenon if pin lift machine.

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