10+ Aarti Industries Executive Production Interview Questions and Answers

Polar solvents have a positive and negative end, while nonpolar solvents have no charge.

• Polar solvents dissolve polar solutes and nonpolar solvents dissolve nonpolar solutes.

• Water is a polar solvent, while oil is a nonpolar solvent.

• Polarity is determined by the electronegativity difference between atoms in a molecule.

Heat transfer occurs in three modes: conduction, convection, and radiation.

• Conduction is the transfer of heat through a material without any movement of the material itself.

• Convection is the transfer of heat through the movement of fluids or gases.

• Radiation is the transfer of heat through electromagnetic waves.

• Examples of conduction include touching a hot stove or iron, while examples of convection include boiling water or wind blowing over a hot surface.

• Examples of radiation...read more

DG works as a backup power source during power failure.

• DG stands for Diesel Generator.

• It automatically starts when there is a power failure.

• It provides power to essential equipment and systems.

• It requires regular maintenance and fuel supply.

• Examples of essential systems powered by DG are elevators, emergency lights, and fire alarms.

AHU is a part of HVAC system. AHU is a device that circulates air while HVAC is a system that controls temperature, humidity and air quality.

• AHU stands for Air Handling Unit

• AHU is a part of HVAC system

• AHU circulates air while HVAC controls temperature, humidity and air quality

• HVAC stands for Heating, Ventilation and Air Conditioning

• HVAC is a system that provides thermal comfort and acceptable indoor air quality

• Examples of HVAC systems include central heating, air conditioning...read more

A fire extinguisher is a device used to control or extinguish small fires. There are different classes of fire extinguishers for different types of fires.

• Fire extinguishers are classified based on the type of fire they can extinguish.

• Class A fire extinguishers are used for fires involving ordinary combustibles like wood, paper, or cloth.

• Class B fire extinguishers are used for fires involving flammable liquids like gasoline or oil.

• Class C fire extinguishers are used for fires ...read more

Centrifugal force is the apparent force that acts outward on a body moving around a center, arising from the body's inertia.

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

• It is the result of an object's inertia trying to keep it moving in a straight line while it is being forced to move in a circular path.

• Examples include the feeling of being pushed to the side in a car when turning a corner, or the water being pushed to the sides of a spinning bucket.

• Cen...read more

Safety valves and rupture discs are important safety devices in production processes.

• Safety valves are designed to release excess pressure in a system to prevent explosions or other hazardous situations.

• Rupture discs are used as a backup to safety valves and are designed to burst at a predetermined pressure to release excess pressure.

• Both safety valves and rupture discs are critical components in ensuring the safety of personnel and equipment in production processes.

• Examples ...read more

Material balance and energy balance equations are used to track the flow of materials and energy in a system.

• Material balance equation is based on the principle of conservation of mass.

• Energy balance equation is based on the principle of conservation of energy.

• Material balance equation: Input = Output + Accumulation

• Energy balance equation: Input = Output + Storage + Losses

• Example: In a chemical reactor, the material balance equation would track the flow of reactants and produ...read more

Handling chemicals requires proper training, protective gear, and adherence to safety protocols.

• Wear appropriate personal protective equipment (PPE) such as gloves, goggles, and lab coats

• Store chemicals properly in designated areas with clear labeling

• Follow safety protocols and procedures for handling, mixing, and disposing of chemicals

• Be aware of the hazards associated with each chemical and take necessary precautions

• Properly ventilate work areas to prevent inhalation of fum...read more

Batch charging is the process of charging multiple devices at once.

• Use a charging station with multiple ports

• Ensure the charging station can handle the power requirements of all devices

• Organize devices by type and charging needs

• Set a schedule for charging to avoid overloading circuits

• Consider using smart charging technology to optimize charging speed and efficiency

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 heat exchanger

MSDS stands for Material Safety Data Sheet.

• MSDS provides information about the hazards of a chemical substance.

• It includes information on the composition, physical and chemical properties, health and safety hazards, and emergency procedures.

• MSDS is required by law for all hazardous chemicals used in the workplace.

• It is important to read and understand the MSDS before using a chemical substance.

• MSDS is often available online or from the manufacturer or supplier of the chemical...read more

There are various types of dryers used in production, including rotary dryers, fluidized bed dryers, and spray dryers.

• Rotary dryers use a rotating drum to dry materials.

• Fluidized bed dryers use hot air to suspend and dry materials.

• Spray dryers use a nozzle to spray liquid into a hot air stream, creating a fine powder.

• Other types of dryers include freeze dryers, vacuum dryers, and paddle dryers.

NPSH (Net Positive Suction Head) can be calculated by subtracting the vapor pressure of the liquid from the total suction head.

• Calculate the total suction head (TSH) by adding the atmospheric pressure, the pressure head at the surface of the liquid, and the velocity head.

• Determine the vapor pressure of the liquid at the operating temperature and pressure.

• Subtract the vapor pressure from the total suction head to get the NPSH value.

• NPSH = TSH - Vapor Pressure