Oil And Natural Gas Corporation Summer Trainee Interview Questions and Answers

Simple apti and core questions

Q1. Technical plus HR
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Q2. Distiallation questions heat transfer questions and fluid mechanics questions.
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Q3. What is flooding and weeping
Ans. 
Flooding and weeping are terms used in the context of chemical engineering to describe the behavior of liquids in a packed column.
• Flooding occurs when the liquid flow rate is too high, causing the liquid to accumulate in the column and impede the gas flow.

• Weeping occurs when the liquid flow rate is too low, causing the liquid to trickle down the column walls instead of forming a proper liquid film on the packing.

• Both f...read more
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Q4. Design distialltion column
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Distillation column is a vertical vessel used to separate components in a liquid mixture based on their boiling points.
• Design the column with trays or packing material to increase surface area for vapor-liquid contact.

• Include a reboiler at the bottom to vaporize the liquid mixture.

• Add a condenser at the top to condense the vapor back into liquid.

• Consider the number of theoretical stages required for separation efficien...read more
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Q5. What do you mean by NPSH
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NPSH stands for Net Positive Suction Head, a measure of the pressure available at the suction port of a pump.
• NPSH is important for determining if a pump will operate properly without cavitation.

• It is calculated by subtracting the vapor pressure of the liquid from the total suction head.

• NPSH is typically expressed in units of meters or feet.

• Adequate NPSH is crucial for preventing damage to the pump and ensuring efficien
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Q6. Training related questions
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