Tractor Mechanics: Traction Mechanics, Stability, Center of Gravity, PTO, Hitching and Ergonomics

If transmission and engine system of a tractor produce a noise of 80 dB each, then the overall noise level will be:

Which of the following is an indicator of efficiency with which the traction device transforms the torque acting on axle into linear drawbar pull?

A load of "W" kN is acting on a tyre having 160 mm nominal width. The effective friction coefficient of tyre and ground interaction is "\(\mu\)" and the kingpin offset is 10 mm. Assuming the tyre impression on ground as circle with diameter equal to nominal tyre width, the kingpin torque of the tyre in N·m will be:

A 2WD tractor with a total weight of 20 kN has static weight distribution of 25% and 75% at the front and rear axles, respectively. When the tractor is operated on level ground, the maximum tractive force developed is 10 kN. If external weight of 5 kN is added to the rear axle, neglecting weight transfer, the change in maximum tractive force in kN is:

The overall mechanization level in India ranges from :

The acceptable work load for average Indian workers is about :

The volume of tyre filled with water for ballasting purpose is :

Weight transfer in a tractor-implement system is caused by:

A tractor can be considered as a spring-mass-damper system with:

If the working tool cannot rest on a surface and is normally used with one hand, its weight should be limited to: