STM and Associates Interview Questions and Answers

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).

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

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.

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.

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

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