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The line of pull on an implement is 20° above the horizontal and in a vertical plane which is at an angle 10° with the direction of travel. What drawbar power would be required at 5km/h

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+1 vote
in Farm Machinery by (38.9k points)
The line of pull on an implement is 20° above the horizontal and in a vertical plane which is at an angle 10° with the direction of travel. What drawbar power would be required at 5km/h

(a) 13.8 KW

(b) 11.5 KW

(c) 12.5 KW

(d) 9.87 KW

I got this question in an internship interview.

My query is from Traction and Traction Theory topic in chapter Farm Tractor of Farm Machinery

1 Answer

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Best answer
Correct choice is (c) 12.5 KW

Best explanation: Draft = Pcos20° = 8.328 KN

Side draft = (Psin10°) cos20° = 1.468 KN

Drawbar power = 9 * 5 * 5/18 = 12.5 KW

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