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Cummins Associate Engineer Interview Questions and Answers

Updated 5 Feb 2024

Q1. Which gas is most harmful of all emissions

Ans.

The most harmful gas emission is carbon dioxide (CO2).

  • CO2 is a greenhouse gas that contributes to global warming and climate change.

  • It is released by burning fossil fuels like coal, oil, and gas.

  • Other harmful emissions include sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter (PM).

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Q2. What are various heat treatments to lower stresses,

Ans.

Heat treatments like annealing, tempering, and stress relieving can lower stresses in materials.

  • Annealing involves heating the material to a high temperature and then slowly cooling it to reduce internal stresses.

  • Tempering involves heating the material to a specific temperature and then cooling it quickly to reduce stresses.

  • Stress relieving involves heating the material to a specific temperature and then cooling it slowly to reduce stresses.

  • Other heat treatments like quenchin...read more

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Cummins Associate Engineer Interview Questions and Answers for Freshers
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Q3. Adaptability problem?

Ans.

Adaptability problem refers to difficulty in adjusting to new situations or changes.

  • Adaptability problem can arise due to lack of experience or exposure to new situations.

  • It can also be caused by fear of the unknown or fear of failure.

  • Adaptability problem can be overcome by developing a growth mindset and being open to learning and trying new things.

  • Examples of adaptability problem include difficulty in adjusting to a new job, new environment, or new technology.

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Q4. Where is maximum stress?

Ans.

Maximum stress occurs at the point where the force is applied or concentrated.

  • Maximum stress occurs at the point of highest force concentration.

  • It can also occur at points of sudden change in geometry or material properties.

  • Examples include corners, edges, and holes in a structure.

  • Stress concentration factors can be calculated to determine the maximum stress.

  • Proper design and material selection can help minimize stress concentrations.

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Q5. Strength of materials

Ans.

Strength of materials is the study of how materials withstand external forces and stresses.

  • It involves analyzing the behavior of materials under different loads and conditions.

  • Factors such as elasticity, plasticity, and fracture mechanics are considered.

  • Examples include calculating the maximum weight a bridge can support or designing a building to withstand earthquakes.

  • Testing methods such as tensile testing and compression testing are used to determine material properties.

  • Kn...read more

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Q6. Draw stress diagram

Ans.

A stress diagram shows the distribution of stress in a structure or component.

  • Stress diagrams are typically drawn using a graphical method, such as the Mohr's circle.

  • They can be used to determine the maximum stress and the location of stress concentrations.

  • Stress diagrams can also be used to analyze the effects of loads on a structure or component.

  • They are commonly used in engineering and mechanics to design and test structures.

  • Stress diagrams can be drawn for various types o...read more

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Q7. Probability of fracture in rod

Ans.

Probability of fracture in rod depends on various factors such as material, stress, and manufacturing process.

  • The material of the rod plays a crucial role in determining its fracture probability.

  • Higher stress levels increase the probability of fracture.

  • The manufacturing process can also affect the probability of fracture.

  • Factors such as temperature, corrosion, and fatigue can also impact the probability of fracture.

  • Probability of fracture can be calculated using fracture mech...read more

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