10+ Parth Infotech Solutions Interview Questions and Answers

There are several types of valves used in mechanical systems.

• Gate valve: used to control the flow of fluid by lifting or lowering a gate

• Ball valve: uses a ball to control the flow of fluid

• Butterfly valve: uses a disc to control the flow of fluid

• Check valve: allows fluid to flow in one direction only

• Globe valve: controls flow by raising or lowering a plug

• Needle valve: uses a long, tapered needle to control flow

• Diaphragm valve: uses a flexible diaphragm to control flow

• Plug valv...read more

There are several types of heat exchangers, including shell and tube, plate and frame, and finned tube.

• Shell and tube heat exchangers are the most common type and consist of a shell with tubes inside.

• Plate and frame heat exchangers use thin plates to transfer heat between fluids.

• Finned tube heat exchangers have tubes with fins attached to increase surface area for heat transfer.

• Other types include spiral, double pipe, and air-cooled heat exchangers.

• The type of heat exchanger ...read more

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

• Centrifugal pumps are commonly used in various industries, including oil and gas, water treatment, and HVAC systems.

• They work by using an impeller to rotate and create a centrifugal force, which pushes the fluid towards the pump outlet.

• The fluid enters the pump through the suction inlet and is accelerated by the impeller, increasing its velocity ...read more

A shell and tube heat exchanger is a device used to transfer heat between two fluids.

• Consists of a shell (outer vessel) and tubes (inner vessels)

• One fluid flows through the tubes while the other flows around the tubes in the shell

• Heat is transferred from one fluid to the other through the tube walls

• Commonly used in industries such as power generation, chemical processing, and HVAC

• Example: Cooling water in a power plant is heated by steam passing through the tubes

Positive displacement pump is a type of pump that moves fluid by trapping a fixed amount of it and then forcing it into the discharge pipe.

• Positive displacement pumps operate by trapping a specific volume of fluid and then forcing it into the discharge pipe.

• These pumps are capable of generating high pressures and are used in various industries such as oil and gas, chemical, and food processing.

• Examples of positive displacement pumps include reciprocating pumps, rotary pumps, ...read more

PPE stands for Personal Protective Equipment.

• PPE is equipment worn to minimize exposure to hazards that may cause serious workplace injuries or illnesses.

• Examples of PPE include safety glasses, gloves, hard hats, respirators, and safety shoes.

• PPE should be selected based on the specific hazards present in the workplace.

• Employers are responsible for providing PPE to their employees and ensuring that it is properly maintained and used.

• Employees are responsible for wearing PPE w...read more

PPE stands for Personal Protective Equipment. It refers to protective clothing, helmets, goggles, or other equipment designed to protect the wearer's body from injury or infection.

• PPE is used in various industries to protect workers from hazards.

• Examples of PPE include safety glasses, gloves, hard hats, respirators, and earplugs.

• PPE should be selected based on the specific hazards present in the workplace.

• Proper training and maintenance of PPE are essential for its effectiven...read more

An axial flow pump is a type of pump that uses an impeller to create fluid flow parallel to the pump shaft.

• Axial flow pumps are commonly used in applications where large volumes of fluid need to be moved at low to medium pressures.

• They are often used in irrigation systems, drainage systems, and cooling systems.

• The impeller of an axial flow pump has blades that resemble a propeller, which helps in generating the axial flow.

• Unlike centrifugal pumps, axial flow pumps do not chan...read more

A ball valve is a type of valve that uses a ball-shaped disc to control the flow of fluid through a pipe.

• Ball valves are commonly used in industrial applications for their durability and reliability.

• They have a simple design, consisting of a ball with a hole in the middle that can be rotated to control the flow of fluid.

• Ball valves can be either full port or reduced port, depending on the size of the ball and the hole.

• They provide tight shut-off and are often used in applicat...read more

A globe valve is a type of valve used to regulate or stop the flow of fluid in a pipeline.

• It has a spherical body with an internal baffle that directs the flow of fluid.

• The valve can be opened or closed by rotating the stem.

• It provides a tight seal when closed, preventing leakage.

• Globe valves are commonly used in applications where throttling or regulating flow is required.

• They are often found in water systems, steam systems, and oil and gas pipelines.