Universal Voltas LLC Interview Questions, Process, and Tips

33/11 kv pss refers to a 33kV/11kV primary substation working.

• 33/11 kv pss stands for a primary substation with a voltage level of 33kV/11kV.

• It is responsible for stepping down the high voltage from the transmission line to a lower voltage suitable for distribution to consumers.

• The substation includes equipment such as transformers, circuit breakers, and protection devices.

• It plays a crucial role in ensuring reliable p...read more

The pH cycle withdrawing involves monitoring and adjusting the pH levels in a system to maintain optimal conditions.

• Monitor pH levels regularly to ensure they are within the desired range

• Adjust pH levels using appropriate chemicals or solutions

• Maintain accurate records of pH measurements and adjustments

• Ensure proper calibration of pH meters and probes

• Consult with water treatment specialists if needed for complex system

EXV and TXV are types of expansion valves used in HVAC systems to regulate the flow of refrigerant.

• EXV stands for Electronic Expansion Valve and is controlled by an electronic signal.

• TXV stands for Thermostatic Expansion Valve and is controlled by temperature and pressure.

• Both valves regulate the flow of refrigerant into the evaporator coil to maintain proper temperature and pressure levels.

• EXV is more precise and effi...read more

The refrigeration cycle is a process that removes heat from a space and transfers it to the external environment.

• The refrigeration cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.

• The compressor is responsible for pressurizing the refrigerant gas, increasing its temperature and pressure.

• The condenser then removes heat from the refrigerant gas, causing it to condense into a ...read more

Chilled water circuit diagram includes components like chiller, pump, cooling tower, and air handling unit.

• Chiller: cools the water before circulating it through the system

• Pump: circulates the chilled water through the system

• Cooling tower: removes heat from the water before it returns to the chiller

• Air handling unit: distributes the chilled air throughout the building

HVAC stands for Heating, Ventilation, and Air Conditioning.

• HVAC stands for Heating, Ventilation, and Air Conditioning

• HVAC is responsible for maintaining indoor air quality and comfort

• HVAC systems include components like furnaces, air conditioners, and ventilation ducts

The fan coil unit (FCU) is full of water or condensate.

• Check for clogged drain lines or condensate pump failure.

• Inspect the drain pan for any leaks or cracks.

• Ensure the unit is properly leveled to allow for proper drainage.

• Check the air filter for any blockages that may be causing the unit to overflow.

Chillers and ahu use in comrhical buldling

lp hp switch , anit frzeer switch ,Lp,hp trandsuer , flow flow switch, sensor errr. under voltage alarm , high viltage alarm, low amp alarm, comp high temp etc. pressure hold 180PSI. micron 500hurnaderd is required for gas chagre ,...

airhandling unit , fan coil unit . ahu . coil fan filer , motor , water criculation in coil blower air supply through duct in room FCU insatailltion in the room justblike water cool unit with blower , cooling tower use chiller dischagre temp condcation , ser pump perimary pump use in chiler and ahu