Mechanical Engineering :: Workshop Technology
- In shielded arc welding
- A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?
- The maximum flame temperature occurs
- The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is
- Metal patterns are used for
- The machining allowance provided on patterns depends upon
- The metal patterns as compared to wooden patterns require less
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A.
The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction |
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B.
The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction |
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C.
The bottom and middle roll rotate in the same direction |
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D.
Any one of the above |