Construction Mechanical Engineer Interview Questions and Answers

Adding petrol to a diesel engine or diesel to a petrol engine can cause serious damage to the engine and may lead to engine failure.

• Adding petrol to a diesel engine can cause knocking and reduced lubrication, leading to engine damage.

• Adding diesel to a petrol engine can cause incomplete combustion, clogging of fuel injectors, and damage to the engine components.

• It is important to always use the correct type of fuel recommended by the manufacturer to ensure proper engine perfo...read more

The isometric diagram of a piping system shows a 3D representation of the pipes and their connections.

• Start by drawing the main pipes in 3D perspective, ensuring they are parallel and at correct angles.

• Add fittings such as elbows, tees, and valves to show how the pipes connect.

• Include labels for each component to indicate their purpose and size.

• Use shading or color to differentiate between different pipes and components.

• Ensure all dimensions are accurately represented in the ...read more

Different grades of steel vary in composition, strength, and properties.

• Grades of steel are classified based on their chemical composition and physical properties.

• Higher grade steels have higher strength and hardness.

• Different grades of steel are used for different applications, such as construction, automotive, and machinery.

• Examples of steel grades include A36, A572, and A514.

Iron carbon diagram shows the phases of iron and carbon at different temperatures.

• Graphical representation of the phases of iron and carbon at different temperatures

• Helps in understanding the microstructure of steel

• Shows the transformation of phases during heating and cooling processes