Control Print Technician Interview Questions and Answers for Experienced

Refrigeration cycle is a process in which a refrigerant absorbs heat from a low-temperature area and releases it in a high-temperature area.

• Refrigerant absorbs heat from the evaporator coil and evaporates into a gas

• The compressor then compresses the gas, raising its temperature and pressure

• The hot gas flows through the condenser coil, releasing heat and condensing back into a liquid

• The liquid refrigerant passes through...read more

AHU stands for air handling unit and is used to condition and circulate air, while FCU stands for fan coil unit and is used to cool or heat air in a specific space.

• AHU is a centralized unit that conditions and circulates air throughout a building.

• FCU is a decentralized unit that cools or heats air in a specific space, such as a room or zone.

• AHU typically serves multiple spaces or zones, while FCU serves a single space.

• ...read more

There are two main types of compressors: positive displacement compressors and dynamic compressors.

• Positive displacement compressors include reciprocating, rotary, and scroll compressors.

• Dynamic compressors include centrifugal and axial compressors.

• Each type of compressor has its own advantages and disadvantages based on the application.

MCB stands for Miniature Circuit Breaker. It is a type of electrical protection device that automatically switches off electrical circuits during abnormal conditions.

• MCB is used to protect electrical circuits from overloads and short circuits.

• It is a more convenient and reliable alternative to fuses.

• MCBs come in different ratings to suit different electrical loads.

• They can be easily reset after tripping, unlike fuses w...read more

Mcb is used for safety in both homes and companies. Safety wiring is essential for preventing electrical hazards.

• Mcb (Miniature Circuit Breaker) is used in homes and companies to protect electrical circuits from overloads and short circuits.

• Safety wiring, such as grounding wires and proper insulation, is crucial for preventing electrical shocks and fires.

• Proper installation and maintenance of Mcbs and safety wiring are...read more

Maintenance work often requires the use of various tools and equipment.

• Maintenance work may involve using tools such as screwdrivers, wrenches, pliers, multimeters, and power drills.

• Different tools are used for different tasks, such as testing electrical circuits, tightening bolts, or replacing components.

• Regular maintenance of equipment may require specialized tools specific to the machinery being serviced.

• Proper tool...read more

Maintenance work often involves using electrical equipment such as tap cutters.

• Regularly inspecting and cleaning electrical equipment to ensure proper functioning

• Replacing worn out parts or components as needed

• Testing equipment after maintenance to ensure it is working correctly

• Following safety procedures when working with electrical equipment

• Keeping a record of maintenance work done on each piece of equipment

HVAC work involves installing, maintaining, and repairing heating, ventilation, and air conditioning systems. Compressors are a type of HVAC component that pressurizes refrigerant gas.

• HVAC work includes installing, maintaining, and repairing heating, ventilation, and air conditioning systems

• Compressors are a type of HVAC component that pressurizes refrigerant gas

• There are different types of compressors used in HVAC sys...read more

The refrigeration cycle in HVAC and AC systems involves the process of absorbing heat from indoor air and releasing it outside.

• Refrigerant absorbs heat from indoor air through the evaporator coil

• The refrigerant is then compressed into a high-pressure, high-temperature gas in the compressor

• The hot gas releases heat outside through the condenser coil

• The refrigerant then expands and cools down in the expansion valve befor