Universal Voltas LLC Interview Questions, Process, and Tips

Merits and demerits of fresher on the job site training vs class room training and delegation of responsibilities vs mentoring

Q1. Advantage and disadvantages of using small size mining equipment vs big size equipments and optimisation of utilizations to reduce cost per ton cost
Ans. 
Small size mining equipment offers flexibility and lower initial cost, but may have lower productivity compared to big size equipment. Optimization of utilization can help reduce cost per ton.
• Small size equipment offers flexibility to access narrow or difficult areas, reducing the need for additional equipment or manual labor.

• Big size equipment may have higher productivity and efficiency, leading to lower cost per ton ...read more
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Q2. What you see yoyrself 5 years from now .
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Q3. Heading the professional team to take challenging work at project site.
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Q1. Describe the pH cycle withdrawing
Ans. 
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
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Q2. Describe THE EXV AND TXV
Ans. 
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
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Q1. Refrigeration cycle and details of all components
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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
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Q2. Chilled water circuit diagram with details of all components
Ans. 
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
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Q1. What HVAc and HVAc full from
Ans. 
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
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Q2. What fcu full from
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Q3. Heat ventilators.Air conditioning
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Q4. Fan coil unit fcu full from
Ans. 
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.
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Q1. Chillers and hvac
Ans. 
Chillers and ahu use in comrhical buldling
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Q2. Chillers safety and trobulshooting the chillers ,pressure testing , deyhighdruction for chillers
Ans. 
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 ,...
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Q3. Ahu ,fcu , coolong tower , pump , vav
Ans. 
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
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Q1. Centrifugal and screw chiller service
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Q1. Chiller service
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