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

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Workshop Technology
A progressive limit gauge has

'Go' member at one end and 'Not go' member at the other end
Separate 'Go' and 'Not go' members
'Go' and 'Not go' member on the same side of the gauge
None of the listed here

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