Defence Research & Development Organisation Design Engineer Interview Questions and Answers

1 hr and various apti topics

Q1. What are your strengths
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Q2. How do gas turbine engines work
Ans. 
Gas turbine engines work by compressing air, mixing it with fuel, igniting the mixture, and using the hot exhaust gases to spin a turbine.
• Air is drawn into the engine and compressed by a compressor

• Fuel is injected and mixed with the compressed air

• The mixture is ignited, causing a rapid expansion of gases

• The hot exhaust gases are used to spin a turbine, which drives the compressor and generates thrust

• Examples: Jet engin
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Q1. Related to aeronautics
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Q1. Salary discussion,documentation and bond details
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Q1. Define the factor of safety?
Ans. 
Factor of safety is a design parameter that accounts for uncertainties in material properties and loading conditions.
• Factor of safety is the ratio of the maximum stress a material can withstand to the maximum stress it is subjected to in a given application.

• It ensures that the structure or component will not fail under normal operating conditions.

• Higher factor of safety values indicate a more conservative design approa...read more
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Q2. What is tolerance?
Ans. 
Tolerance refers to the allowable variation in dimensions or properties of a part or product.
• Tolerance is important in engineering to ensure proper fit and function of components.

• It is typically specified as a range of acceptable values, such as +/- 0.1mm.

• Tolerance can be applied to dimensions, material properties, surface finish, etc.

• For example, a hole may have a tolerance of +/- 0.05mm to allow for proper alignment
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Q1. About past project experience
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Q2. Challenging problems faced and how overcame them
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Q1. Basic questions about personal information
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Q2. Why you want to join this organisation
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Hackathon Approach to evaluate the skills and then evaluate on aptitude as well

Q1. Talk about the project handled before and the skills developed
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Q2. Managing stressful situations
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