Indian Oil Corporation R&D Engineer Interview Questions and Answers

Q1. Some basic discussion about my projects. A brief explanation from my side. Then they started asking questions from electrical machines. Mostly it was basics. Then they talked about latest trends in battery...read more
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60 question were asked in ot to be answer in 60 min .

Q1. What is fluid ?
Ans. 
Fluid is a substance that flows and takes the shape of its container.
• Fluid is a state of matter that has no fixed shape and yields easily to external pressure.

• Examples of fluids include water, air, and oil.

• Fluids can be classified as liquids or gases based on their properties.
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Q2. What is viscosity.
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Viscosity is a measure of a fluid's resistance to flow.
• Viscosity is the thickness or stickiness of a fluid.

• It is caused by the internal friction of the fluid.

• High viscosity fluids flow slowly, while low viscosity fluids flow quickly.

• Examples include honey (high viscosity) and water (low viscosity).
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Q1. General introduction and technical questions
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Q2. Asked me to explain about me
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Q3. Previous experience and challenges faced
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Q1. Tell me about your self
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I am a passionate and experienced Design Engineer with a strong background in mechanical engineering and a proven track record of successful projects.
• I have a Bachelor's degree in Mechanical Engineering from XYZ University.

• I have worked for 5 years in the design engineering field, specializing in product development and optimization.

• I am proficient in CAD software such as SolidWorks and AutoCAD, as well as FEA analysis...read more
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Q1. Why your leaves your previous job
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Q1. Basic Civil Engineering multiple choice questions
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Q2. Aptitude questions
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Q3. English reasoning questions
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Q1. Tell me about your self
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Q2. Tell us about your previous experience
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Q3. Your job responsibilities
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Q4. Biggest achievement
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Q5. How do you maintain moral at site
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Q6. How did you ensure safety
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Question answer related piping job ,material related, manpower handling etc...

Q1. Piping related question, Piping material astm code
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Q2. Types of piping drawing
Ans. 
Types of piping drawings include Piping and Instrumentation Diagrams (P&IDs), Isometric drawings, and Orthographic drawings.
• Piping and Instrumentation Diagrams (P&IDs) show the piping system along with instruments and control devices.

• Isometric drawings show the 3D representation of the piping system.

• Orthographic drawings show the top, front, and side views of the piping system.
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Q3. Difference b/w construction and fabrication drawing?
Ans. 
Construction drawings show how a structure will be built, while fabrication drawings provide detailed instructions for manufacturing individual components.
• Construction drawings focus on overall structure layout and dimensions

• Fabrication drawings provide detailed instructions for manufacturing individual components

• Construction drawings are used by contractors on site, fabrication drawings are used by manufacturers in wo...read more
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Q4. Piping material code ?
Ans. 
Piping material code refers to the standards and specifications used for selecting materials for piping systems.
• Piping material codes are used to ensure the proper selection of materials based on factors like pressure, temperature, and fluid being transported.

• Common piping material codes include ASME B31.3 for process piping, ASTM for materials specifications, and API for oil and gas piping.

• These codes provide guidelin...read more
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Q5. Difference b/w pipe and tubes
Ans. 
Pipes are used to transport fluids or gases, while tubes are used for structural applications or heat transfer.
• Pipes are measured by their inside diameter, while tubes are measured by their outside diameter.

• Pipes are typically round in shape, while tubes can be round, square, or rectangular.

• Pipes are commonly used in plumbing, HVAC systems, and oil and gas industries, while tubes are used in construction, automotive, a
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