Subtopic: Type, selection, maintenance and repair of tractors and power tillers
Question Statement:
Which one of the following is NOT a towed wheel?
Options:
(A) wheels of power tiller
(B) front wheels of two wheel drive tractor
(C) wheels of bullock cart
(D) wheels of trailer
Official Answer Key:
B
Step-by-Step Solution & Explanation
A 'towed wheel' is a free-rolling wheel that carries no drive torque and is simply pulled/pushed along, with motion imposed entirely by the towing force — e.g. trailer wheels and bullock-cart wheels roll passively behind the pulling unit with no steering or power function of their own. Power-tiller wheels are driven wheels (they receive engine torque directly), so by elimination the remaining candidate is judged against the strict 'towed' definition. The front wheels of a two-wheel-drive tractor, although not power-driven, are actively steered through the steering linkage and carry a designed share of the machine's static/dynamic load — they are functionally classed as steering wheels rather than purely towed wheels, since a towed wheel by definition has no directional control mechanism of its own. Hence option (B) is the one that is NOT a (purely) towed wheel.
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