What type of governor is commonly used in gramophone turntables for speed regulation_______________?
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Answer: C. Pickering governor
Explanation
The Pickering governor is a spring-loaded centrifugal governor designed for gramophone turntables. It regulates rotational speed accurately using flyweights restrained by calibrated hairsprings. This compact governing mechanism ensures consistent turntable speed during musical playback. Centrifugal governors use rotating flyweights that move outward as rotational speed increases. Gramophone players required stable speed regulation to prevent pitch distortion in recorded audio. The Pickering design was specifically tailored for the small space constraints of vintage phonographs.
Vintage audio equipment restoration technicians encounter Pickering governors in spring-wound gramophones. Speed regulation principles used in these governors apply broadly to mechanical feedback control systems. Maintaining stable turntable speeds was vital before the advent of synchronous electric motors. Option A describes the Hartung governor, typically used in larger steam turbine control systems. Option B names the Wilson Hartnell governor, built for heavy industrial prime movers and engines. Option D refers to inertia governors that respond primarily to angular acceleration changes.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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