What could happen if a tractor is operated in a high gear while pulling a heavy load?
The engine may stall due to insufficient torque
A high gear turns the wheels faster per engine revolution but multiplies the engine's torque by a smaller amount.
Pulling a heavy load needs a large driving torque at the wheels to overcome the resistance.
In high gear the reduced torque at the wheels is not enough to move that heavy load.
The engine is then dragged down, its speed falls, and with too little torque it stalls.
This is why a heavy load should be pulled in a low gear, which multiplies torque.
Hence, the answer is The engine may stall due to insufficient torque.
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