Aarti Industries Graduate Apprentice Trainee Interview Questions and Answers

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers are commonly used in power distribution systems to step up or step down voltage levels.

• They consist of two or more coils of wire, known as windings, that are wound around a core made of magnetic material.

• The primary winding receives electrical energy from a power source, whi...read more

A relay is an electrically operated switch that controls the flow of current in a circuit. It provides security by isolating the control circuit from the high voltage circuit.

• A relay is a device that uses an electromagnet to mechanically open or close contacts in a circuit.

• It acts as a switch, allowing or interrupting the flow of current in a circuit.

• Relays provide security by isolating the control circuit from the hig...read more

pH is a measure of the acidity or alkalinity of a solution. It ranges from 0 to 14.

• pH stands for 'potential of hydrogen'

• It is a logarithmic scale that measures the concentration of hydrogen ions in a solution

• A pH of 7 is considered neutral, below 7 is acidic, and above 7 is alkaline

• Examples: Lemon juice has a pH of around 2, while baking soda has a pH of around 9

Partial pressure is the pressure exerted by a single gas in a mixture of gases.

• Partial pressure is proportional to the mole fraction of the gas in the mixture.

• It is calculated by multiplying the total pressure of the mixture by the mole fraction of the gas.

• Each gas in a mixture contributes to the total pressure independently.

• Dalton's law of partial pressures states that the total pressure of a gas mixture is equal to t...read more

Ideal gas law is a fundamental law of physics that describes the behavior of gases under varying conditions.

• It relates the pressure, volume, temperature, and number of particles of a gas.

• The law is expressed as PV = nRT, where P is pressure, V is volume, n is the number of particles, R is the gas constant, and T is temperature.

• The law assumes that the gas particles are in constant random motion and that there are no in...read more

Work and energy are fundamental concepts in physics. As a chemical engineer, I will apply these concepts to optimize processes, improve efficiency, and develop sustainable solutions.

• Work refers to the transfer of energy that occurs when a force is applied to an object and it moves in the direction of the force.

• Energy is the capacity to do work and exists in various forms such as kinetic, potential, thermal, chemical, a...read more

The unit of pressure is Pascal (Pa) and the unit of force is Newton (N).

• Flow measuring devices include orifice plates, venturi tubes, and flow nozzles.

• Pressure is measured in units of force per unit area.

• Force is a vector quantity that can be measured using a force gauge or load cell.

• In fluid mechanics, pressure is often used to calculate flow rate.

• Examples of flow measuring devices include rotameters, magnetic flow me