What is the average piston speed of a five...

Question 1 of 270705eccefa1bacbc34ba4d47429

What is the average piston speed of a five cylinder low- speed engine with a bore of 29.5 inches (75 cm), a stroke of 63 inches (160 cm), and a rated speed of 123 RPM?

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Question 1 of 27070

Q

What is the average piston speed of a five cylinder low- speed engine with a bore of 29.5 inches (75 cm), a stroke of 63 inches (160 cm), and a rated speed of 123 RPM?

🔍 Key Concepts

• Average piston speed formula in a reciprocating engine • Relationship between stroke length, RPM, and piston travel per minute • Consistent unit conversion between inches and feet (or cm and m)

💭 Think About

• First, express how far the piston travels in one revolution based on the stroke. Is it one stroke or up-and-down (two strokes) per revolution? • Then, figure out how many of those piston travels happen per minute at 123 RPM. • After calculating in inches per minute, convert carefully to feet per minute (or to meters per minute) and compare with the choices.

✅ Before You Answer

• Be sure you are using stroke length, not bore, in the piston speed calculation. • Confirm whether to multiply stroke by 1 or 2 when finding distance per revolution for average piston speed. • Double-check your unit conversions: 12 in = 1 ft and 100 cm = 1 m.