Subtopic: Power transmission systems – gear trains, differential, final drives and power take-off
Question Statement:
The function of a differential lock used in a rear wheel driven tractor is
Options:
(A) to operate both the rear wheels at the same speed
(B) to operate both the rear wheels at differential speeds
(C) to operate both the rear wheels at the same torque
(D) to evenly distribute the power to both the wheels
Official Answer Key:
A
Step-by-Step Solution & Explanation
A differential normally allows the two rear wheels to rotate at different speeds (e.g. while turning, or when one wheel loses traction). Locking the differential rigidly couples both half-axles so they are forced to rotate at the same speed, preventing wheel-spin loss of traction in soft/muddy conditions.
Practice This in Real CBT Exam Interface
Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.