Speed classification of steam engines: categorize an engine running between 100 and 250 r.p.m. Context: Slow, medium, and high-speed steam engines are classified by crankshaft rpm bands in classic practice. Select the correct class for 100–250 r.p.m.
Mechanical Engineering
Steam Boilers and Engines
Difficulty: Easy
Choose an option
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ASlow speed engine
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BMedium speed steam engine
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CHigh speed steam engine
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DNone of these
Answer
Correct Answer: Medium speed steam engine
Explanation
ConceptTypical classification places engines of about 100–250 r.p.m. in the medium-speed category. Slower machines (e.g., < 100 r.p.m.) are slow-speed; much faster units are high-speed types.