GATE PI · 2026 · PI
Question 46: Metal Forming
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Question 46
PIMSQ2 marksNeeds review
In a rolling operation, a 200 mm wide strip of 23 mm thickness needs to be reduced to 20 mm in a single pass. The roll diameter is 200 mm. Four lubricants P, Q, R, and S with coefficient of friction 0.05, 0.1, 0.2, and 0.25, respectively, are available for use at the roll-strip interface. Assume that the strip width remains constant throughout the process.
Which ONE or MORE among the following lubricants will enable the rolling process to achieve the desired final thickness of the strip in a single pass?
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2026PI
GATE PI 2026 · Paper 1
Production and Industrial Engineering · Original paper archive
- Section
- Production and Industrial Engineering
- Question type
- Multiple select (MSQ)
- Marks
- 2 marks
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