UPL Production Graduate Engineer Trainee Interview Questions and Answers

Q1. What is scope of chemical engineering
Ans. 
The scope of chemical engineering is vast, encompassing various industries and applications.
• Chemical engineering involves the design, development, and operation of processes and systems that convert raw materials into useful products.

• It is applicable in industries such as pharmaceuticals, petrochemicals, food and beverage, energy, environmental engineering, and more.

• Chemical engineers work on improving efficiency, safe...read more
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Q2. What is distillation
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Distillation is a process of separating components of a liquid mixture based on their different boiling points.
• Distillation involves heating the mixture to vaporize the more volatile components.

• The vapor is then cooled and condensed back into liquid form, separating the components.

• The component with the lower boiling point will condense first and can be collected separately.

• Distillation is commonly used in industries s...read more
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Q3. Distillation refers to the selective boiling and subsequent condensation of a component in a liquid mixture. It is a separation technique that can be used to either increase the concentration of a particul...read more
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In the context of a liquid mixture, distillation refers to the selective boiling of a component and subsequent condensation of that component..
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Q4. Role of heat transfer
Ans. 
Heat transfer is the process of thermal energy transfer between objects or systems.
• Heat transfer is essential in various industrial processes, such as heating, cooling, and drying.

• It plays a crucial role in the design and operation of heat exchangers, boilers, and refrigeration systems.

• Heat transfer can occur through conduction, convection, and radiation.

• Conduction is the transfer of heat through direct contact between...read more
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Q5. Role of mass transfer
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Mass transfer refers to the movement of substances from one place to another in a system.
• Mass transfer is important in various industrial processes such as distillation, absorption, and extraction.

• It involves the transfer of mass or molecules between phases, such as gas-liquid, liquid-liquid, or solid-liquid.

• Mass transfer can occur through various mechanisms including diffusion, convection, and interfacial mass transfe...read more
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Q1. What is Heat of formation
Ans. 
Heat of formation is the energy released or absorbed when one mole of a compound is formed from its elements in their standard states.
• Heat of formation is also known as standard enthalpy of formation.

• It is typically measured in units of kJ/mol.

• Negative heat of formation indicates exothermic reaction, while positive heat of formation indicates endothermic reaction.

• For example, the heat of formation of water (H2O) is -28
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Q2. What is heat of reaction
Ans. 
Heat of reaction is the amount of heat released or absorbed during a chemical reaction.
• Heat of reaction can be exothermic (heat released) or endothermic (heat absorbed).

• It is typically measured in units of joules or calories.

• Examples include combustion reactions releasing heat and photosynthesis reactions absorbing heat.
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Q1. Fans vs blowers
Ans. 
Fans are used to create airflow in a specific direction, while blowers are used to generate high-pressure airflow in a concentrated area.
• Fans are typically used for cooling purposes in electronics or ventilation in buildings.

• Blowers are commonly used in HVAC systems, industrial processes, and automotive applications.

• Fans have lower pressure capabilities compared to blowers.

• Blowers are more efficient in moving air over ...read more
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Q2. Design of heat exchanger
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Heat exchangers are devices used to transfer heat between two or more fluids.
• Heat exchangers can be classified based on their construction (e.g. shell and tube, plate, finned tube)

• Design considerations include fluid flow rates, temperature ranges, material selection, and pressure drop

• Efficiency of heat exchangers can be improved by increasing surface area for heat transfer

• Examples of heat exchangers include car radiato...read more
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Q1. Questions about protection of power system
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Q2. Questions about electrical machines
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Q1. Transformer and it's protection
Ans. 
Transformer protection is essential to prevent damage and ensure reliable operation.
• Types of protection include overcurrent, overvoltage, differential, and thermal protection.

• Relays are used to detect faults and initiate protective actions.

• Buchholz relay is used for detecting internal faults in oil-filled transformers.

• Pressure relief devices are installed to prevent explosion in case of internal faults.

• Regular maintena...read more
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Q2. Metering and protection
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Mental ability English grammar aptitude test

Around 7 members to make a discussion about a single topic

Q1. Make a good command of any subject in their respective branch
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Q1. Communication skills body language personal information
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Q1. Sepatation technics
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Q2. How to calculate number of theotitical plates
Ans. 
Number of theoretical plates can be calculated using the plate theory or the distillation column design equation.
• The plate theory method involves using the equilibrium data for the components being separated and the operating conditions of the column.

• The distillation column design equation method involves using the height equivalent to a theoretical plate (HETP) and the total number of plates in the column.

• Example: For...read more
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