Bharat Petroleum Mechanical Engineer Interview Questions and Answers

Q1. Basic Question related to mechanical basics
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Q1. Tell me about yourself
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Q2. Strength & Weakness, Where you see 5 years from now.
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Q1. What is yield strength and ultimate strength
Ans. 
Yield strength is the stress at which a material begins to deform plastically, while ultimate strength is the maximum stress a material can withstand before breaking.
• Yield strength is the point where a material starts to deform plastically, meaning it will not return to its original shape once the stress is removed.

• Ultimate strength is the maximum stress a material can withstand before it breaks or fractures.

• Yield stre...read more
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Q2. All FEA related questions
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Q3. All basic SOM and SHEET METAL RELATED QUESTIONS
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Q1. What would you do if the design called for tight tolerances and the part was manufactured out of tolerance
Ans. 
I would assess the impact of the out-of-tolerance part and determine if it can still function within acceptable limits or if it needs to be reworked or replaced.
• Assess the functionality of the part with the out-of-tolerance dimensions

• Determine if the part can still meet the overall design requirements despite being out of tolerance

• Consider the potential impact on the performance and safety of the final product

• Consult w...read more
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Q1. Tell me what you see about his drawing
Ans. 
The drawing appears to be a mechanical component with multiple parts and dimensions.
• The drawing includes various geometric shapes such as circles, rectangles, and lines.

• There are labels indicating dimensions and measurements for each part.

• The drawing may also include annotations or symbols representing different materials or processes.

• It seems to be a detailed technical drawing for manufacturing or assembly purposes.
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Q1. Explain your self and where did you working current in 2014
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Q2. Which gas can use for while hot/live tapping
Ans. 
Nitrogen gas is commonly used for hot/live tapping in mechanical engineering.
• Nitrogen gas is inert and non-reactive, making it safe to use in hot/live tapping processes.

• It helps to create a protective atmosphere to prevent explosions or fires.

• Nitrogen gas is readily available and cost-effective.

• Other gases like argon or carbon dioxide can also be used depending on the specific requirements.
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Q3. Which method can we follow for railway/road/river crossings
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Various methods can be used for railway/road/river crossings depending on the location and other factors.
• Bridges can be built over the crossing

• Tunnels can be dug under the crossing

• Level crossings can be used for roads

• Flyovers can be constructed for roads

• Ferries can be used for river crossings

• Aqueducts can be built for waterways

• Location, traffic volume, and safety considerations must be taken into account when choosing
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Q4. Which procedure can follow for pipe lines welding while route and filling
Ans. 
The procedure for pipe lines welding while route and filling involves several steps.
• Clean the area to be welded thoroughly

• Tack weld the pipes together

• Weld the root pass

• Fill the remaining gap with weld metal

• Perform post-weld heat treatment if required

• Inspect the weld for defects
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Q5. Cross country pipeline code - Nitrogen
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Q6. Explain About RT, UT, and magnetic partials
Ans. 
RT, UT, and magnetic partials are non-destructive testing methods used in engineering.
• RT stands for Radiographic Testing and uses X-rays or gamma rays to inspect the internal structure of a material.

• UT stands for Ultrasonic Testing and uses high-frequency sound waves to detect flaws or defects in a material.

• Magnetic particle testing uses magnetic fields and iron particles to detect surface and slightly subsurface defec...read more
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