Paushak Process Engineer Interview Questions and Answers

Heat exchanger design involves selecting appropriate materials, determining heat transfer coefficients, and optimizing flow rates.

• Consider the type of fluid being used and its properties

• Choose materials that can withstand the temperature and pressure of the fluids

• Calculate the heat transfer coefficients for each fluid

• Optimize the flow rates to maximize heat transfer efficiency

• Consider the overall size and cost of the h

Pressure drop in absorption and reactor is influenced by flow rate, viscosity, temperature, and equipment design.

• Pressure drop in absorption is affected by gas flow rate, liquid flow rate, and contact area.

• In a reactor, pressure drop is influenced by reactor size, catalyst activity, and reaction kinetics.

• Higher flow rates and viscosities generally result in higher pressure drops.

• Temperature changes can also impact pres...read more

I have 10 years of experience in software engineering, specializing in backend development and system architecture.

• 10 years of experience in software engineering

• Specialize in backend development and system architecture

• Worked on projects involving scalability and performance optimization

No, I do not have a supervisor license.

• I do not possess a supervisor license at the moment.

• I have not pursued obtaining a supervisor license in my career.

• My focus has been on technical expertise rather than supervisory roles.

Testing of motors involves various methods to ensure functionality and performance.

• Performing insulation resistance tests to check for any electrical faults

• Conducting load tests to measure the motor's performance under different conditions

• Checking for abnormal noise or vibrations during operation

• Inspecting the motor for any physical damage or wear

• Using thermography to detect overheating issues

Transformer safety relays are devices used to protect transformers from faults and overloads.

• Transformer safety relays monitor the electrical parameters of a transformer, such as current, voltage, and temperature.

• They can trip the transformer offline in case of a fault to prevent damage.

• Some common types of transformer safety relays include overcurrent relays, differential relays, and temperature relays.

A centrifuge is a machine that uses centrifugal force to separate substances of different densities or to remove moisture.

• Centrifuges are commonly used in laboratories to separate components of blood or other fluids.

• They work by spinning samples at high speeds, causing heavier particles to move towards the bottom of the tube.

• Centrifuges can also be used in industrial processes, such as separating oil from water in the

Crystallization is the process of formation of solid crystals from a homogeneous solution.

• Crystals are formed when atoms or molecules arrange themselves in a repeating pattern.

• It involves the separation of solute particles from a solution to form a solid crystal.

• Crystallization is used in various industries such as pharmaceuticals, food processing, and chemical manufacturing.

• Examples include the formation of sugar crys...read more

Crystal formation is more at the point of supersaturation, where the solution contains more solute than it can normally hold.

• Crystal formation is more likely when the solution is cooled slowly, allowing time for the molecules to arrange themselves into a crystal lattice.

• Higher concentrations of solute in the solution increase the chances of crystal formation.

• Impurities in the solution can act as nucleation sites, promo...read more

Distillation is a process of separating components of a liquid mixture based on differences in boiling points.

• Distillation involves heating the liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form.

• The components with lower boiling points will vaporize first and be collected, leaving behind components with higher boiling points.

• Common examples of distillation include the production...read more

Boiling point is the temperature at which a liquid turns into vapor, fire point is the temperature at which a substance can ignite and sustain combustion, and flash point is the temperature at which a substance gives off enough vapor to ignite momentarily.

• Boiling point is the temperature at which a liquid changes into vapor by overcoming atmospheric pressure.

• Fire point is the temperature at which a substance can ignite...read more

The required oxygen percentage in a confined space is typically between 19.5% and 23.5%.

• Oxygen percentage in a confined space should be maintained between 19.5% and 23.5% for safe working conditions.

• Levels below 19.5% can lead to hypoxia (oxygen deficiency) and levels above 23.5% can increase the risk of fire.

• It is important to regularly monitor and test the oxygen levels in confined spaces to ensure safety.

• Proper vent...read more

Centrifugal force is the outward force experienced by an object moving in a circular path.

• Centrifugal force is not a real force, but rather a perceived force due to inertia.

• It is the opposite of centripetal force, which is the inward force keeping an object in circular motion.

• Examples include the feeling of being pushed to the side in a car when it takes a sharp turn, or water being pushed outwards in a spinning bucket

A permit system is a formal process used to control and manage work activities in hazardous environments.

• Permit systems ensure that proper precautions are taken before work begins

• They typically involve obtaining written authorization to perform work

• Common types of permits include hot work permits, confined space permits, and electrical work permits

The plant is a manufacturing facility that produces products through a series of processes.

• The plant has multiple production lines that operate simultaneously

• Raw materials are received and stored in the warehouse before being processed

• The production process involves mixing, heating, cooling, and packaging

• Quality control checks are performed at various stages of the process

• Finished products are stored in the finished go

Mass transfer is the movement of substances from one place to another.

• Mass transfer involves the movement of components in a system due to differences in concentration, pressure, or temperature.

• Examples include the diffusion of gases in air, the separation of components in distillation processes, and the absorption of gases in liquids.

• Mass transfer is important in various industries such as chemical engineering, food p

Distillation is a process of separating components of a liquid mixture based on differences in boiling points.

• Distillation involves heating the liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form.

• The components with lower boiling points will vaporize first and be collected, while the components with higher boiling points will remain in the liquid phase.

• Common examples of distilla...read more