Which of the following is an example of a slider-crank mechanism in practical applications? 

Explanation:

Slider-Crank Mechanism:

• A slider-crank mechanism is a mechanical system that transforms rotational motion into linear motion or vice versa. It is commonly found in various machinery where such transformation is required. The mechanism typically consists of four main components: a crank, a connecting rod, a slider (or piston), and a fixed frame.

Working Principle:

• In a slider-crank mechanism, the crank is attached to a rotating shaft, and the opposite end of the crank is connected to a connecting rod. The other end of the connecting rod is connected to the slider. As the crank rotates, it imparts motion to the connecting rod, which in turn moves the slider back and forth in a linear path within the fixed frame. This conversion of rotary motion to linear motion is fundamental in various mechanical systems.

Advantages:

• Efficient conversion of rotary motion to linear motion, making it essential in many mechanical devices.
• Simplicity in design and relatively easy to manufacture and maintain.
• Provides smooth and continuous motion, which is crucial for many applications.

Disadvantages:

• Wear and tear due to continuous motion, which can lead to maintenance issues over time.
• Possible mechanical vibrations that can affect the performance and longevity of the system.

Applications: Slider-crank mechanisms are widely used in various mechanical systems, including internal combustion engines, compressors, and pumps. One of the most common and recognizable applications is in reciprocating engines.