What is an engine indicator utilizing a Watt mechanism called________________?
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Answer: B. Richard indicator
Explanation
The Richard indicator specifically incorporates a Watt linkage to magnify piston motion accurately. Historical engineering instruments utilized this mechanical linkage configuration to record engine pressures. Attributed to inventors of the era, the Richard indicator became a standard testing device. Engine indicators measure cylinder pressure against piston displacement to evaluate engine performance. Watt mechanisms provide approximate straight-line motion without requiring complex sliding guides. Mechanical indicator diagrams were crucial for analyzing steam and internal combustion engine efficiency.
Historical steam power plants relied on indicators to monitor mechanical health and indicated horsepower. Understanding linkage history highlights the evolution of precision measurement in mechanical engineering. Modern electronic pressure transducers have largely replaced mechanical indicator mechanisms today. Option A refers to Thompson indicators which utilized different spring and lever arrangements. Option C and D list alternative indicator designs or historical spelling variations of instrument makers. Option E incorrectly dismisses valid historical instrumentation developed during the industrial revolution.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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