What role does a mechanical governor play in automotive systems_______________?
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Answer: C. to control SN
Explanation
A mechanical governor regulates engine speed by controlling fuel supply to limit speed variations. Managing the governing speed range designated as SN ensures stable operation under changing loads. Automatic adjustment prevents dangerous overspeeding when external mechanical loads fluctuate significantly. Governors use centrifugal force acting on rotating flyweights to sense changes in rotational speed. The mechanical movement of these flyweights adjusts the throttle valve linkage of the engine. James Watt developed early centrifugal governors to control steam engines during the industrial revolution.
Automotive cruise control systems utilize similar feedback principles to maintain steady vehicle speeds. Standby electrical generators require governors to maintain constant frequency despite sudden electrical load changes. Industrial turbines rely heavily on speed governors to prevent catastrophic mechanical runaway events. Option A is incomplete because it only describes the general goal without specifying fuel control. Option B is overly broad and lacks the specific technical context of speed regulation. Option D is incorrect because options like simple control are too vague to be fully accurate.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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