Agricultural Engineering > GATE 2017 > Subsoiler
A subsoiler operating at 400 mm depth requires 15 kW peak drawbar power at 3 km/h speed. The standard is rigidly fixed vertically on the main frame. The resultant soil resistance acts horizontally at a vertical distance of 450 mm from the main frame. The standard has rectangular cross-section with width to thickness ratio of 4:1, and it fails due to bending. If the allowable bending stress is 90 N/mm², the width of the standard in mm will be
Correct : 129
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