Nanliu Manufacturing India Private Limited Engineer Trainee Interview Questions and Answers

Heat exchangers are devices used to transfer heat between two or more fluids, without them mixing together.

• There are three main types of heat exchangers: shell and tube, plate, and finned tube.

• Shell and tube heat exchangers consist of a shell with tubes running through it, allowing one fluid to flow through the tubes while another flows over the tubes.

• Plate heat exchangers use plates to separate the fluids and transfer...read more

Distillation is a process used to separate components of a liquid mixture based on their boiling points.

• Types of distillation include simple distillation, fractional distillation, and steam distillation.

• Simple distillation is used to separate components with a large difference in boiling points.

• Fractional distillation is used for components with closer boiling points, using a fractionating column to achieve better sepa...read more

I have a small family with four members. My father is a retired government employee.

• I come from a small family with four members.

• My father is a retired government employee.

• I can provide more details about my family if required.

A distillation column is a vertical vessel used for separating a mixture of liquids into its individual components.

• It works on the principle of differential boiling points of the components in the mixture.

• The mixture is heated and vaporized, then the vapor rises up the column and condenses on the trays or packing material.

• The condensed liquid is then collected and separated into its individual components.

• Distillation c...read more

T-x-y diagram is a graph that shows the phase behavior of a mixture of three components.

• T-x-y diagram is used in chemical engineering to analyze the behavior of a mixture of three components.

• It shows the relationship between temperature, composition, and pressure.

• The diagram is used to determine the conditions under which a mixture will be in a single phase or multiple phases.

• It is also used to determine the compositio...read more

MC Thele diagram is a graphical representation of the relationship between the main characteristics of a control system.

• MC Thele diagram is used to analyze and design control systems.

• It shows the relationship between the main characteristics of a control system, such as stability, speed of response, and steady-state error.

• The diagram consists of two axes, one representing the gain of the system and the other representi...read more

Reflux ratio is the ratio of liquid reflux to the distillate and affects the separation efficiency of a distillation column.

• Reflux ratio is a key parameter in distillation column design and operation.

• It is defined as the ratio of liquid reflux to the distillate.

• Increasing the reflux ratio increases the purity of the distillate but decreases the distillate flow rate.

• Decreasing the reflux ratio decreases the purity of th...read more

Reflux ratio is the ratio of liquid reflux to the distillate. Optimum reflux ratio is the minimum reflux ratio that gives the desired purity.

• Minimum reflux ratio is the ratio at which the desired purity is achieved.

• Reflux ratio is important in distillation process to achieve desired purity.

• Optimum reflux ratio is the minimum reflux ratio that gives the desired purity.

• Reflux ratio can be calculated using the McCabe-Thie...read more

Heat exchanger is a device used to transfer heat between two or more fluids of different temperatures.

• Types of heat exchangers include shell and tube, plate and frame, and finned tube.

• The type of fluid being used determines the material of construction for the heat exchanger.

• Baffles are plates or rods placed inside the heat exchanger to direct the flow of fluid and increase heat transfer efficiency.

Pump is a mechanical device that moves fluids from one place to another. Valve is a device that controls the flow of fluids.

• Types of pumps include centrifugal, positive displacement, and axial flow pumps.

• Types of valves include gate, globe, ball, and butterfly valves.

• Pumps are used in various applications such as water supply, oil and gas, and chemical processing.

• Valves are used in industries such as power generation,

Centrifugal pump is a mechanical device used to transport fluids by converting rotational kinetic energy to hydrodynamic energy.

• Centrifugal pump consists of an impeller, casing, and inlet/outlet ports.

• The impeller rotates and creates a centrifugal force that moves the fluid towards the outlet.

• NSPH stands for Net Positive Suction Head and is a measure of the pressure required at the inlet to prevent cavitation.

• Cavitatio...read more