Question

On the farm, during paddy land preparation, if one wheel of tractor gets in mud, which of the following mechanism will be useful to take out the tractor from mud by distributing equal amount of traction at both the rear wheels?

• A. Break Lock
• B. Differential Lock
• C. Flywheel Lock
• D. Hydraulic Valve Lifting Lever Lock

Hint:

Think about which mechanism forces both rear wheels to spin at the same speed.

Answer 1

The Correct Option is B

Step 1: When one rear wheel sinks into mud, the normal differential sends most of the power to the wheel spinning freely in the mud, while the wheel on firm ground gets almost no traction. This is why the tractor gets stuck.

Step 2: Engaging the differential lock stops the differential from splitting torque unevenly and forces both rear wheels to turn at the same speed with equal traction.

Step 3: This equal traction on both wheels lets the wheel on firm ground pull the tractor out of the mud. Brake lock, flywheel lock and hydraulic lever lock have no role in wheel traction distribution, so option 2 is correct.