If the piston stroke in a four-stroke cycle...

Question 1 of 270705eccefa1bacbc34ba4d47434

If the piston stroke in a four-stroke cycle diesel engine is 10 1/2 inches and the speed of rotation of the crankshaft is 720 RPM, what is the average piston speed?

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Question 1 of 27070

Q

If the piston stroke in a four-stroke cycle diesel engine is 10 1/2 inches and the speed of rotation of the crankshaft is 720 RPM, what is the average piston speed?

🔍 Key Concepts

• Relationship between stroke length, crankshaft RPM, and average piston speed • Converting inches to feet and revolutions per minute to distance per minute • Remembering that in one revolution, the piston travels up and down (two strokes)

💭 Think About

• First, figure out how many inches per minute the piston travels using the stroke length and RPM. • Think about whether the piston moves its stroke distance once or twice for each crankshaft revolution. • After finding inches per minute, convert that value carefully into feet per minute and compare with the choices.

✅ Before You Answer

• Confirm you used 2 × stroke for each revolution, not just the single stroke distance. • Make sure you converted 10 1/2 inches into a decimal inches value before multiplying. • Double-check your inches-to-feet conversion (divide by 12) before choosing the closest answer.