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IIT Bombay Interview Questions and Answers

Updated 5 Feb 2024

Q1. What will happen happen if the coefficient of friction keeps on increasing in rolling process?

Ans.

Increasing coefficient of friction in rolling process will result in increased resistance and reduced efficiency.

  • Increased coefficient of friction leads to increased resistance between the rolling object and the surface it is rolling on.

  • This increased resistance results in more energy being lost as heat and less energy being transferred to useful work.

  • The rolling process becomes less efficient as more force is required to overcome the increased friction.

  • Higher friction can al...read more

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Q2. What is the strain in x direction (after drawing a 3D stress block)?

Ans.

The strain in x direction cannot be determined without additional information.

  • The 3D stress block only provides information about the stress components in the x, y, and z directions.

  • To determine the strain in a specific direction, additional information such as the material's elastic modulus and Poisson's ratio is needed.

  • The strain can be calculated using the formula: strain = stress / (elastic modulus * (1 + Poisson's ratio))

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Q3. What is the throat thickness of steel members as per IS Code?

Ans.

Throat thickness of steel members as per IS Code varies based on the size of the member.

  • Throat thickness is the minimum thickness of the weld at the root of the joint.

  • As per IS 800:2007, the throat thickness of fillet welds should be at least 0.7 times the size of the smaller member being joined.

  • For example, if the size of the smaller member is 10 mm, the throat thickness of the fillet weld should be at least 7 mm.

  • For butt welds, the throat thickness should be equal to the th...read more

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Q4. What is definition of stress in engineering?

Ans.

Stress in engineering refers to the internal force experienced by a material or structure due to external loads.

  • Stress is a measure of the intensity of the internal forces within a material or structure.

  • It is caused by external loads or forces acting on the material or structure.

  • Stress can be categorized into different types such as tensile, compressive, shear, and bending stress.

  • Tensile stress occurs when a material is being pulled apart, compressive stress occurs when a mat...read more

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Q5. Why aluminium less suitable for laser cutting?

Ans.

Aluminium is less suitable for laser cutting due to its high reflectivity and thermal conductivity.

  • Aluminium has a high reflectivity, which means it reflects a significant amount of laser energy instead of absorbing it.

  • Its high thermal conductivity causes the heat generated during laser cutting to quickly dissipate, making it difficult to achieve precise cuts.

  • Aluminium also forms an oxide layer on its surface, which further hinders the absorption of laser energy.

  • Compared to o...read more

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Q6. Can you explain your MTech project

Ans.

Developed a machine learning model for predicting stock prices using technical indicators

  • Used Python and various libraries like Pandas, NumPy, and Scikit-learn

  • Preprocessed the data by removing missing values and outliers

  • Extracted technical indicators like Moving Average, Relative Strength Index, and Bollinger Bands

  • Trained and tested the model using various algorithms like Linear Regression, Random Forest, and Support Vector Regression

  • Achieved an accuracy of 80% on the test se...read more

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Q7. What is one TR

Ans.

TR stands for Technical Report, a document that describes the process, progress, or results of a research project.

  • TRs are often used in academic and scientific research to communicate findings and share knowledge.

  • They can include detailed descriptions of research methods, data analysis, and conclusions.

  • TRs may also be used in industry to document product development or engineering projects.

  • Examples of TRs include white papers, research papers, and technical manuals.

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Q8. Expalin your PhD research and future work plan at IIT bombay

Ans.

My PhD research focused on developing novel algorithms for image processing and computer vision. At IIT Bombay, I plan to continue this work and apply it to real-world problems.

  • Developed a deep learning-based algorithm for object detection in satellite images

  • Published 3 papers in top-tier computer vision conferences

  • Future work includes applying these algorithms to medical imaging for disease diagnosis

  • Collaborating with industry partners to develop practical applications for t...read more

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