Question 334General Subjects - Assistant Engineer

The correct answer is A) Planetary gear. An epicyclic gear, also known as a planetary gear, is a type of gear system that consists of one or more outer gears, or "planet" gears, revolving around a central, or "sun" gear. This arrangement allows for a compact, efficient transmission of power and speed changes. Planetary gears are commonly used in automatic transmissions, bicycle hubs, and other applications where a compact, high-torque gear system is required. The other answer choices are incorrect because: B) Articulated gear is a type of gear that uses a series of linked segments, C) Nested gear refers to a set of gears arranged concentrically, and D) Locked train gear is a type of parallel-shaft gear system, none of which are examples of an epicyclic or planetary gear arrangement.