Workshop Technology
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as

Centrifugal casting method
Permanent mould casting method
Slush casting method
Die casting method

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Workshop Technology
A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?

The bottom and middle roll rotate in the same direction
The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction
The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction
Any one of the above

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