What type of wear defined as the action of hard, sharp material cutting through the surface of a softer material?

• Abrasive Wear

• Adhesive Wear

• Sliding Wear

• Fretting Wear

The image above represents what type of wear?

• Impact wear

• Cavitation erosion wear

• Liquid erosion wear

• Cutting wear

Wear on spark plug is a typical example of what type of wear?

• Sliding wear

• Spark erosion

• Liquid erosion

• Solid particle erosion

Cyclic loading leading to the formation of surface cracks can be the caused of what type of wear?

• Adhesive wear

• Corrosive wear

• Surface fatigue wear

• Abrasive wear

Corrosion occurred in the roller bearing above can be prevented by?

• Strengthen the metal composition

• Increasing the operating temperature

• Improving lubrication system

• Replacing with the new roller bearing

What type of wear mechanism that caused to lower the efficiency on the pump shown in the image?

• Fretting wear

• Surface fatigue wear

• Sliding wear

• Cavitation erosion

What type of wear can caused this?

• Abrasive wear

• Adhesive wear

• Sliding wear

• Erosive wear

Electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another is called as?

• Pitting corrosion

• Electrical corrosion

• Bimetallic corrosion

• Erosion corrosion

What is the purpose of nitriding surface treatments?

• To minimise surface interaction

• To smoothen the surface

• To reduce surface resistance

• To increase hardness surface

CNC machining is an example of activity that creates what type of wear?

• Erosive wear

• Cutting wear

• Adhesive wear

• Sliding wear