PI Industries Interview Questions, Process, and Tips

Batch, semi-batch and continuous processes differ in their approach to handling materials and producing products.

• Batch processes involve producing a finite amount of product in a single run, such as baking a cake.

• Semi-batch processes are a combination of batch and continuous processes, where some materials are added in batches while others are continuously fed, such as in the production of pharmaceuticals.

• Continuous pr...read more

The process involving hazardous materials and equipment will have high possibilities of hazards.

• Handling of chemicals and machinery can lead to accidents

• Improper disposal of hazardous waste can harm the environment

• Lack of safety measures can result in injuries or fatalities

• Examples: chemical manufacturing, oil drilling, nuclear power plants

Self-priming pumps can create a vacuum to draw fluid into the pump while reciprocating pumps use a piston to move fluid.

• Self-priming pumps are able to operate without external priming, making them useful for applications where the pump may be located above the fluid level.

• Reciprocating pumps use a piston or diaphragm to move fluid through the pump, making them useful for high-pressure applications.

• Self-priming pumps ar...read more

Laws governing energy and its transformations in physical systems.

• First law: Energy cannot be created or destroyed, only transferred or converted.

• Second law: Entropy of a closed system always increases over time.

• Third law: Absolute zero cannot be reached.

• Applications in engineering, physics, and chemistry.

• Examples: heat engines, refrigeration, combustion, chemical reactions.

Steam ejectors are devices that use steam to create a vacuum by entraining and compressing gases or vapors.

• Steam ejectors work by using a high-pressure steam jet to create a low-pressure zone, which draws in gases or vapors from the surrounding area.

• The entrained gases or vapors are then compressed and discharged through a diffuser, which increases their velocity and reduces their pressure.

• Steam ejectors are commonly u...read more

Heat pump is a device that transfers heat from a lower temperature to a higher temperature.

• Heat pump works on the principle of refrigeration cycle.

• It consists of four main components: evaporator, compressor, condenser, and expansion valve.

• The refrigerant absorbs heat from the low-temperature source (air, water, or ground) in the evaporator and gets converted into a gas.

• The compressor then compresses the gas, which incr...read more

Grinding is a process of removing material from a workpiece using an abrasive wheel or belt.

• Grinding is used to achieve high dimensional accuracy and surface finish.

• It is commonly used in manufacturing industries for finishing operations.

• Different types of grinding machines are used for different applications such as cylindrical, surface, and centerless grinding.

• Grinding can be done manually or with the help of compute...read more