Question 375Steam Plants - 1st Asst/Chief

70% to pass

Regarding main reduction gears, when high speed first reduction pinions and gears are connected to low speed pinions and gears, each contained in a sequential portion of the gear housing, the reduction gear unit is known as _______________.

Aarticulated
Blocked train
Cnested
Dnone of the above
AI Explanation

The correct answer is A) articulated. When high-speed first reduction pinions and gears are connected to low-speed pinions and gears, each contained in a sequential portion of the gear housing, the reduction gear unit is known as an articulated reduction gear. This configuration allows for the different gear components to be arranged in a modular, sequential manner within the gear housing, providing flexibility in the overall gear system design. The other options are incorrect because: B) Locked train refers to a fixed, non-modular arrangement of the gears. C) Nested refers to a concentric arrangement of the gears, not a sequential one. D) There is a specific term that applies to this type of gear configuration, so "none of the above" is not the correct answer.

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Official Resources
46 CFR Machinery & Electrical 46 CFR Engineering USCG National Maritime Center
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