Daikin Diploma Trainee Engineer Interview Questions and Answers

Refrigeration cycle involves four thermodynamic processes: compression, condensation, expansion, and evaporation.

• The refrigerant is compressed by a compressor, increasing its temperature and pressure.

• The high-pressure refrigerant then flows through a condenser, where it releases heat and condenses into a liquid.

• The liquid refrigerant then passes through an expansion valve, where it undergoes a pressure drop and becomes a low-pressure liquid.

• The low-pressure liquid refrigerant...read more

Air conditioning and refrigeration systems work on the principle of heat transfer and phase change of refrigerant.

• Air conditioning system cools and dehumidifies air in a room or building.

• Refrigeration system removes heat from a space and transfers it to the outside environment.

• Both systems use a refrigerant to absorb and release heat through phase change.

• Air conditioning system uses a compressor, evaporator, condenser, and expansion valve to circulate refrigerant.

• Refrigeratio...read more

The functions of parts of an Air Conditioner include cooling, dehumidifying, filtering, and circulating air.

• Compressor: compresses and circulates refrigerant to cool the air

• Condenser: releases heat from the refrigerant to the outside air

• Evaporator: absorbs heat from the air and cools it down

• Expansion valve: regulates the flow of refrigerant into the evaporator

• Fan: circulates the air over the evaporator and condenser coils

• Filter: removes dust, pollen, and other particles from ...read more

A noise filter circuit is used to remove unwanted noise from a signal.

• It is a type of electronic filter that attenuates or removes noise from a signal

• It can be implemented using passive components like resistors, capacitors, and inductors

• Active components like operational amplifiers can also be used to design noise filter circuits

• Examples include low-pass filters, high-pass filters, band-pass filters, and notch filters

Vapour Compression Refrigeration System is a common refrigeration system used in air conditioning and refrigeration applications.

• It works by compressing refrigerant vapor to increase its temperature and pressure.

• The high-pressure vapor then condenses into a liquid, releasing heat.

• The liquid refrigerant then passes through an expansion valve, where it evaporates and cools the surrounding area.

• The low-pressure vapor is then drawn back into the compressor to start the cycle agai...read more

Color coding is a system of using colors to convey information or identify objects, wires, or components.

• Color coding is widely used in various industries such as electrical, electronics, telecommunications, and automotive.

• It helps in quickly identifying and distinguishing between different objects or components.

• Color coding can be used to indicate the value or type of a component, the function of a wire, or the status of a device.

• For example, in electrical wiring, the color ...read more

The liquid in use in a battery is typically an electrolyte solution.

• The most common liquid used in batteries is sulfuric acid.

• Other types of batteries may use different electrolyte solutions, such as lithium-ion batteries using lithium salts in organic solvents.

• The electrolyte solution allows for the flow of ions between the battery's electrodes, facilitating the chemical reactions that generate electrical energy.