Deutsche Motoren Interview Questions and Answers

Q1. Its like technical round, they asked about automobile engineering.
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Q2. They asked about the engine basics, and it went deep.
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Q3. They asked about my academic projects, which I mentioned in my resume.
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Q1. Tell me about yourself
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Q1. Can’t remember the questions since it’s been 2months, but the questions were more scenario based and less theoretical.
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Design question related to past work experience and infotainment application

Q1. C++ basic questions
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Q2. Basic fundamentals
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Q1. The functional area I worked upon and the platform software which is used to develop the software
Ans. 
I have worked on various functional areas and platforms including Java, Python, and AWS.
• I have experience in developing software using Java and Python programming languages.

• I have worked on AWS platform for developing and deploying software applications.

• I have expertise in developing web applications using frameworks like Spring and Django.

• I have experience in working with databases like MySQL and MongoDB.

• I have worked...read more
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Q1. Working principle of Turbocharger?, and compressor Map?
Ans. 
Turbocharger uses exhaust gases to compress air and increase engine power. Compressor map shows its efficiency.
• Turbocharger uses a turbine to spin a compressor wheel

• Exhaust gases from the engine turn the turbine

• The compressor wheel draws in air and compresses it

• Compressor map shows the efficiency of the turbocharger at different operating conditions

• Efficiency is measured by pressure ratio and mass flow rate
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Q2. NOx formation and EGR dynamics in Diesel engine?
Ans. 
NOx formation is a result of high combustion temperatures in diesel engines. EGR reduces NOx by recirculating exhaust gases.
• NOx is formed due to high combustion temperatures

• EGR reduces NOx by recirculating exhaust gases

• EGR dynamics involve controlling the amount of exhaust gas recirculated

• EGR can affect engine performance and emissions

• NOx formation can be reduced by using SCR (Selective Catalytic Reduction) systems
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Q3. Relevant experience on Matlab , Python and R?
Ans. 
I have extensive experience in Matlab, Python, and R.
• I have used Matlab for data analysis and modeling in my previous job at XYZ company.

• I have developed machine learning algorithms using Python for a project at ABC company.

• I have used R for statistical analysis and visualization in my graduate research.

• I am proficient in all three languages and can easily switch between them depending on the project requirements.
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