Understanding the Analogy: Wheel and Fan Relationship

The question presents an analogy: "Wheel : Spokes ∷ Fan : ______". This means we need to find the relationship between 'Wheel' and 'Spokes' and then apply the same relationship to 'Fan' to find the missing word.

Analyzing the Relationship: Wheel and Spokes

A wheel is a circular frame that rotates on an axle. Spokes are the connecting rods between the hub (center) of a wheel and the rim (outer edge). They provide structural support and transfer the load from the hub to the rim, allowing the wheel to function effectively.

• Spokes are essential components of many types of wheels (like bicycle wheels).
• They radiate outwards from the center.
• They are key structural and functional parts.

Applying the Analogy to Fan

Now, let's consider a fan. A fan is a machine that produces a current of air by rotating blades. What part of a fan serves a similar role to spokes in a wheel?

Let's look at the options:

• Round: This describes the shape of the fan or its housing, not a specific component analogous to spokes.
• Air: This is what the fan moves, its output, not a physical part of the fan itself.
• Wings: Fans have blades that rotate. These blades are often referred to as 'wings', especially in older terminology or specific types of fans (like aircraft propellers). The blades extend outwards from the central motor/hub and are responsible for moving the air, similar to how spokes extend from the hub and are structural/functional parts of the wheel.
• Motor: The motor is the power source that makes the fan blades rotate. While essential, it's not the radiating element analogous to spokes.

Comparing the components, the blades of a fan are the parts that extend from the center and perform the primary function of the device by their movement, much like spokes extend from the center of a wheel providing structure and function.

Evaluating the Options in the Analogy Context

Let's map the relationship:

Based on this mapping, 'Wings' (representing the fan blades) is the word that completes the analogy.

Conclusion

The relationship between Wheel and Spokes is that spokes are the radiating structural components extending from the center. Similarly, fan blades (often called wings) are the radiating components extending from the center that perform the fan's function of moving air.

Revision Table: Key Concepts

Additional Information on Analogies and Components

Analogies test your ability to see relationships between pairs of words or concepts and apply that same relationship to a different pair. In this case, it's a part-to-whole relationship, specifically focusing on a key radiating or extending component necessary for the device's function or structure.

Understanding the basic components of common objects like wheels and fans is helpful for solving such analogy problems. While 'blades' is the more common term for fan parts today, 'wings' is a valid and historically used term, fitting the structure of the analogy.