The component shown in the illustration,...

Question 1 / 2707066636ef128f7522a1c52114e

Question 1 of 2707066636ef128f7522a1c52114e

The component shown in the illustration, labeled "IV", is the ________. Illustration SE-0013

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Question 1 of 27070

The component shown in the illustration, labeled "IV", is the ________. Illustration SE-0013

If the question has a related picture, it will appear here.

🔍 Key Concepts

• How power flows through a double-reduction gear train from the high‑speed turbine shaft to the low‑speed propeller shaft • The difference in size and speed between a pinion and a bull (or main) gear • Which component in the sketch is clearly the largest gear and which ones are the small driving pinions

💭 Think About

• Trace the path of rotation: which gears would logically be on the high‑speed side and which on the low‑speed side? • Compare the diameters in the illustration: what does a very large diameter gear usually indicate in a reduction gear set? • Ask yourself: is the part labeled IV driving other gears, or being driven by them, and what does that tell you about its role?

✅ Before You Answer

• Identify all the small gears vs. large gear in the picture before choosing • Decide which labeled component would be connected to the propeller (low‑speed) shaft in a marine reduction gear • Make sure your choice for IV matches the usual definition of a bull gear / first or second reduction gear in marine propulsion systems

Question 1 of 27070

The component shown in the illustration, labeled "IV", is the ________. Illustration SE-0013

low-speed pinion

bull gear

high-speed pinion

first reduction gear

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