Subtopic: Three point hitches – free link and restrained link operations
Question Statement:
The ASAE-SAE standard for tractor 3-point hitches has been categorized as Category I to IV on the basis of
Options:
(A) maximum drawbar power
(B) maximum drawbar pull
(C) brake power of tractor engine
(D) maximum PTO power
Official Answer Key:
A
Step-by-Step Solution & Explanation
The ASAE/SAE three-point-hitch category system (Category 0 through IV) sizes lower-link spacing, pin diameter and lift capacity according to the tractor's drawbar horsepower / maximum drawbar power range that the hitch is expected to handle. This is a standard classification fact, not a numeric calculation → option (A). Options (B)–(D) refer to related but different tractor performance parameters that are not the basis of hitch categorization.
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