10+ McNally Bharat Engineering Interview Questions and Answers

Precision air conditioning units are commonly used in server rooms.

• Precision air conditioning units are designed to provide precise temperature and humidity control.

• These units are capable of maintaining stable and optimal conditions for sensitive equipment like servers.

• They often feature redundant systems for reliability and may include features like hot aisle/cold aisle containment.

• Examples of precision air conditioning units include brands like Liebert, APC, and Mitsubishi...read more

PAC stands for Programmable Automation Controller. It is a device used in industrial automation to control and monitor processes.

• PAC is a type of controller used in industrial automation systems.

• It is programmable and can be customized to control and monitor various processes.

• PACs are often used in manufacturing plants, power plants, and other industrial settings.

• They can communicate with other devices and systems to gather data and make decisions.

• PACs offer advanced features...read more

A water cold chiller is a device that cools water by removing heat from it, typically used in air conditioning systems or industrial processes.

• A water cold chiller uses a refrigeration cycle to cool water.

• It consists of components such as a compressor, condenser, expansion valve, and evaporator.

• The chiller circulates chilled water through a system to remove heat from the surroundings.

• It is commonly used in air conditioning systems for cooling buildings or in industrial proces...read more

HVAC stands for Heating, Ventilation, and Air Conditioning. UPS stands for Uninterruptible Power Supply. AHU stands for Air Handling Unit.

• HVAC refers to the technology used for indoor environmental comfort, including heating, cooling, and air quality control.

• UPS is a device that provides emergency power to a load when the input power source fails.

• AHU is a device used to regulate and circulate air as part of a heating, ventilation, and air conditioning system.

An air cold chiller is a device that cools air by removing heat from it.

• An air cold chiller is commonly used in air conditioning systems to cool indoor spaces.

• It works by circulating a refrigerant that absorbs heat from the air and then releases it outside.

• The chilled air is then distributed through ducts or vents to cool the desired area.

• Air cold chillers can be used in various settings such as homes, offices, hospitals, and industrial facilities.

• Examples of air cold chiller...read more

LP stands for Low Pass and HP stands for High Pass.

• LP (Low Pass) is a type of filter that allows low-frequency signals to pass through while attenuating high-frequency signals.

• HP (High Pass) is a type of filter that allows high-frequency signals to pass through while attenuating low-frequency signals.

• LP and HP filters are commonly used in audio systems to control the frequency range of the output signal.

• LP filters are used to remove high-frequency noise or unwanted harmonics ...read more

An AHU (Air Handling Unit) is a device used to regulate and circulate air as part of a heating, ventilation, and air conditioning (HVAC) system.

• AHU is an abbreviation for Air Handling Unit.

• It is a device used in HVAC systems to control and distribute air.

• AHUs typically consist of a fan, heating and cooling coils, filters, and dampers.

• They are responsible for conditioning and circulating air within a building.

• AHUs can be found in various settings such as commercial buildings, ...read more

A UPS (Uninterruptible Power Supply) is a device that provides emergency power to a load when the input power source fails.

• UPS is used to protect critical equipment from power outages, voltage fluctuations, and other power-related issues.

• It typically consists of a battery, an inverter, and a rectifier.

• UPS can be used for various applications such as computers, data centers, hospitals, telecommunications, etc.

• Examples of UPS brands include APC, CyberPower, Eaton, and Tripp Lit...read more

ACB stands for Air Circuit Breaker and VCB stands for Vacuum Circuit Breaker.

• ACB is a type of circuit breaker that uses air as the medium to extinguish the arc.

• VCB is a type of circuit breaker that uses vacuum as the medium to extinguish the arc.

• Both ACB and VCB are used for electrical circuit protection and can interrupt the flow of current in case of faults.

• ACBs are commonly used in low voltage applications, while VCBs are used in medium to high voltage applications.