BMW Mechanical Engineer Interview Questions and Answers for Experienced

A diesel engine works by compressing air in the cylinder, which heats up and ignites the fuel injected into the cylinder.

• Air is drawn into the cylinder and compressed by the piston

• The compressed air heats up and ignites the fuel injected into the cylinder

• The explosion pushes the piston down, which turns the crankshaft and powers the engine

• Diesel engines are more efficient than gasoline engines because they compress the...read more

A train doesn't need a differential because its wheels are fixed to the same axle and rotate at the same speed.

• Train wheels are fixed to the same axle

• Wheels rotate at the same speed

• Differential is used in vehicles with wheels that rotate at different speeds

• Differential allows for smooth turning

Petrol engines have lower compression ratios compared to diesel engines.

• Petrol engines have lower compression ratios to prevent knocking or detonation.

• Diesel engines have higher compression ratios to ignite the fuel without spark plugs.

• Higher compression ratios in diesel engines result in better fuel efficiency and torque.

• Petrol engines require lower compression ratios to accommodate the lower octane rating of petrol f...read more

Problem solving tools are techniques used to identify, analyze and solve problems.

• Root cause analysis

• Fishbone diagram

• SWOT analysis

• Pareto chart

• Brainstorming

• 5 Whys

• Flowchart

• Decision matrix

Senior Engineers lead projects, mentor teams, and ensure technical excellence in design and implementation.

• Lead project design and architecture, ensuring scalability and performance. Example: Designing a microservices architecture for a large application.

• Mentor junior engineers, providing guidance on best practices and career development. Example: Conducting code reviews and offering constructive feedback.

• Collaborate w...read more