Workshop Technology
The cold working of metals is carried out

At the recrystallisation temperature
Below the recrystallisation temperature
At any temperature
Above the recrystallisation temperature

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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?

Any one of the above
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
The bottom and middle roll rotate in the same direction

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