Mukta Arts Maintenance Manager Interview Questions and Answers

A line diagram of HVAC shows the flow of air and refrigerant through the system.

• Shows the components of the HVAC system such as air handler, ductwork, and condenser unit

• Illustrates the direction of airflow and refrigerant flow

• Helps in understanding how the system operates and how components are connected

AHU (Air Handling Unit) works by circulating and conditioning air within a building to maintain a comfortable environment.

• AHU draws in outside air through intake vents

• Air passes through filters to remove dust and particles

• Air is then heated or cooled by coils before being distributed through ducts

• Return air is recirculated to maintain temperature and humidity levels

• AHU may also include humidifiers, dehumidifiers, and a

MCB is a miniature circuit breaker used for overcurrent protection, while ELCB is an earth leakage circuit breaker used for detecting earth faults.

• MCB is used for overcurrent protection in electrical circuits

• ELCB is used for detecting earth faults in electrical circuits

• MCB trips when there is an overcurrent in the circuit

• ELCB trips when there is a leakage current to earth

• MCB is more commonly used in residential and com...read more

UPS works by converting AC power to DC power, storing it in batteries, and then converting it back to AC power when needed.

• UPS takes in AC power from the mains supply

• The AC power is converted to DC power using a rectifier

• The DC power is stored in batteries for backup power

• When there is a power outage, the DC power is converted back to AC power using an inverter

• The connected devices receive uninterrupted power during ou