Amps Electrical Facility Services Electrical Supervisor Interview Questions, Process, and Tips

There are two types of chillers: air-cooled and water-cooled. They work on the vapor compression cycle.

• Air-cooled chillers use air to cool the refrigerant, while water-cooled chillers use water.

• Both types of chillers work on the vapor compression cycle, which involves compressing and expanding refrigerant to remove heat from a space.

• Examples of chillers include centrifugal, screw, and absorption chillers.

• Centrifugal ch...read more

HT, LT, and DG transformers are used for power distribution. Load changeover is done by switching between transformers.

• HT transformers are used for high voltage distribution, while LT transformers are used for low voltage distribution.

• DG transformers are used as backup power sources in case of power outages.

• Load changeover is done by switching between transformers based on the power demand.

• Proper safety measures must b...read more

PAC stands for Precision Air Conditioning, HVAC stands for Heating, Ventilation, and Air Conditioning, and AHU stands for Air Handling Unit.

• PAC is used in server rooms to maintain a constant temperature and humidity level to protect sensitive equipment.

• HVAC is used to control the temperature, humidity, and air quality in buildings.

• AHU is a device used to circulate and regulate air as part of a heating, ventilating, and...read more

Fire pumps are used to supply water to fire sprinkler systems and other fire protection equipment.

• Fire pumps can be electric, diesel, or steam-powered.

• They work by increasing water pressure and flow rate to the sprinkler system.

• Fire pumps are typically connected to a water source such as a tank or municipal water supply.

• Firefighting equipment includes fire extinguishers, hoses, and hydrants.

• Fire extinguishers are class...read more