Alstom Transportation Graduate Engineer Trainee - Electrical Interview Questions and Answers

Bleeding is the process of removing excess air from a hydraulic system.

• Bleeding is necessary to ensure proper functioning of hydraulic systems.

• It involves removing air bubbles from the system by opening valves or using a vacuum pump.

• Bleeding is commonly done in brake systems to ensure proper braking performance.

• It can also be done in cooling systems to prevent overheating.

• Bleeding is important to prevent damage to the

Segregation refers to the separation of different components or materials from a mixture.

• Segregation can occur due to differences in size, density, or shape of the components.

• Examples of segregation include the separation of oil and water in a mixture, or the separation of different sized particles in a granular material.

• Segregation can have negative effects on the quality and consistency of a product, such as in the c...read more

Workability of concrete refers to its ease of mixing, placing, and compacting.

• Workability is a crucial property of concrete that affects its strength, durability, and appearance.

• It is influenced by factors such as water-cement ratio, aggregate size and shape, and admixtures.

• Concrete with good workability can be easily placed and compacted without segregation or bleeding.

• Various tests such as slump test, flow test, and ...read more

W/c ratio is the ratio of water to cement in concrete. Admixtures like superplasticizer can improve concrete without changing w/c ratio.

• W/c ratio is a crucial factor in determining the strength and durability of concrete.

• It is the ratio of the weight of water to the weight of cement used in the mix.

• A lower w/c ratio means stronger and more durable concrete.

• Admixtures like superplasticizer can improve workability, reduc...read more

Types of foundations include shallow, deep, and special foundations.

• Shallow foundations are used for light structures and include spread footings and mat foundations.

• Deep foundations are used for heavy structures and include pile foundations and drilled shafts.

• Special foundations are used for unique soil conditions and include caissons and cofferdams.