Home › Previous year questions › GATE 2022 PI › Question 30GATE 2022 PI – Question 30 Manufacturing Processes II · Machine Tools · 1 mark · Numerical answer
A lathe cuts a single-start 2 mm pitch thread using a single-start lead screw of pitch 4 mm. Find lead-screw revolutions per workpiece revolution to two decimals.
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Show answer and explanation Correct answer: 0.40 to 0.60
Explanation One workpiece revolution requires carriage travel of 2 mm. Each lead-screw revolution moves it 4 mm, so required turns = 2/4 = **0.50**.
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