Luminous Power Technologies Service Engineer Interview Questions, Process, and Tips

Refrigeration cycle is a process in which refrigerant absorbs heat from a low-temperature area and releases it in a high-temperature area.

• Refrigerant absorbs heat from the evaporator coil and evaporates into a gas.

• The compressor then compresses the gas, raising its temperature and pressure.

• The hot gas flows through the condenser coil, releasing heat and condensing back into a liquid.

• The liquid refrigerant passes throug...read more

Various types of gases are used in different industries and applications, such as oxygen, nitrogen, hydrogen, and carbon dioxide.

• Oxygen

• Nitrogen

• Hydrogen

• Carbon dioxide

The type of chiller used depends on the specific requirements of the system, such as cooling capacity, energy efficiency, and space constraints.

• Different types of chillers include air-cooled chillers, water-cooled chillers, absorption chillers, and centrifugal chillers.

• The choice of chiller type is influenced by factors such as the temperature range required, the size of the system, and the availability of water for co...read more

The main compartment in a refrigeration cycle is the evaporator.

• The evaporator is where the refrigerant absorbs heat from the air or water being cooled.

• It is located inside the refrigerator or air conditioning unit.

• The evaporator coils are filled with the refrigerant, which evaporates as it absorbs heat.

• The evaporator is connected to the compressor, which then compresses the refrigerant gas to raise its temperature.

Refrigeration works by removing heat from a space or substance to lower its temperature.

• Refrigerant absorbs heat from the space or substance being cooled

• The refrigerant then moves to the compressor where it is compressed and heated

• The hot, pressurized refrigerant moves to the condenser where it releases heat and condenses into a liquid

• The liquid refrigerant moves to the expansion valve where it expands and cools down

• Th...read more

Common measure issues in washing machines include water leakage, improper drainage, and unbalanced loads.

• Water leakage from the machine or hoses

• Improper drainage causing water to remain in the drum

• Unbalanced loads leading to excessive vibrations during the spin cycle

There are multiple checkpoints in a washing machine to ensure proper functioning and safety.

• Checkpoints include water inlet, detergent dispenser, drum rotation, water drainage, and spin cycle.

• Each checkpoint is designed to monitor and control a specific aspect of the washing process.

• Regular maintenance and cleaning of checkpoints are essential for optimal performance.

• Examples of checkpoints in a washing machine: water ...read more