Prestige Group Maintenance Engineer Interview Questions, Process, and Tips

Yes, ACB settings refer to the settings of Air Circuit Breakers used in electrical systems.

• ACB settings include parameters such as overload protection, short circuit protection, and ground fault protection.

• These settings can be adjusted based on the specific requirements of the electrical system.

• For example, the trip unit of an ACB can be set to trip at a certain current level to protect the system from overloads.

Power factor is a measure of how effectively electrical power is being used in a system.

• Power factor is the ratio of real power (kW) to apparent power (kVA) in an electrical system.

• It indicates how efficiently power is being converted into useful work.

• A power factor of 1 indicates all power is being used effectively, while a lower power factor means some power is being wasted.

• Power factor correction can be used to impr

I will first check the cause of the trip, reset the ACB, and then investigate further if needed.

• Check the cause of the trip - look for any overload, short circuit, or earth fault

• Reset the ACB by switching it off and then on again

• Investigate further if needed - check for any faulty components or wiring

VRF stands for Variable Refrigerant Flow and is a type of HVAC system that uses refrigerant as the cooling and heating medium. AHU stands for Air Handling Unit and is a device used to condition and circulate air as part of an HVAC system.

• VRF systems use refrigerant to directly cool or heat the space, while AHUs use chilled or heated water to condition the air before distributing it.

• VRF systems are more energy efficient...read more