Which type of reduction gear arrangement is...

🔍 Key Concepts

• Identify how many stages of speed reduction are shown between the input and the final (large) gear. • Notice whether the small gears are on the same shaft or on separate, articulated (quill) shafts. • Review the definitions and sketches of locked train, articulated, nested, and two‑pinion single reduction gear arrangements in your marine engineering text.

💭 Think About

• Trace the power flow: start at the smallest pinion and follow which gear it drives, then what that gear’s shaft drives next, until you reach the large bull gear at the bottom. • Ask yourself: do you see one big reduction stage only, or two distinct reduction stages with an intermediate shaft? • Compare this drawing with the typical textbook diagram of an articulated (quill shaft) double‑reduction gear: what features look the same?

✅ Before You Answer

• Count the number of meshes between the input shaft and the large final gear; that tells you single vs double reduction. • Check whether there is an intermediate shaft carrying two gears (one meshing with the input pinion, one meshing with the bull gear). • Confirm that your chosen option’s definition matches both the number of stages (single vs double) and the shaft arrangement (locked train vs articulated vs nested) shown in the illustration.

Which type of reduction gear arrangement is shown in the illustration? See illustration SE-0013.

Locked train, double reduction.

Articulated, double reduction.

Nested, double reduction.

Two-pinion, single reduction.

🔍 Key Concepts

💭 Think About

✅ Before You Answer