Electroplating is a process in which a metal object is coated with a thin layer of another metal through an electrochemical process. This is done to enhance the appearance of the object, protect it from corrosion, improve its conductivity, or provide other desirable properties. Among the given options, the object that is generally electroplated is the cycle handle.

1. Cycle handle
- The handle of a bicycle is often made of a metal such as steel or aluminum. To improve its appearance and protect it from corrosion, it can be electroplated with a layer of chrome, nickel, or other metals.
- The electroplating process involves immersing the cycle handle in a solution containing ions of the desired metal. A current is passed through the solution, causing the metal ions to deposit onto the surface of the handle, forming a thin and even coating.

2. Plough
- A plough is a farm implement used for turning over soil in preparation for planting crops. It is typically made of strong and durable materials such as steel. However, electroplating is not commonly used on ploughs as they are primarily designed for functional purposes rather than aesthetics.

3. Frying pan
- Frying pans are commonly made of materials such as stainless steel or cast iron. While these materials can be electroplated, it is not a common practice for frying pans. The primary focus for frying pans is their cooking properties, and electroplating may not provide any significant benefits in terms of performance.

4. Car engine
- Car engines are typically made of various metals, including aluminum, steel, and cast iron. While some parts of the engine may undergo surface treatments or coatings for protection against corrosion or wear, electroplating is not commonly used for the entire engine. The focus is on using materials and coatings specifically designed for the demanding conditions of an engine.

In summary, the object that is generally electroplated among the given options is the cycle handle. Electroplating is commonly employed to enhance the appearance and protect metal objects from corrosion, and the cycle handle is a suitable candidate for this process.

Cycle Handle is generally electroplated.