Preview Questions HVAC Technician | Role Specific Skill

Question 1: In accordance with the National Fire Protection Association (NFPA) Standard 90A, what is the key consideration when installing HVAC systems in commercial buildings?

Which action should you take?

Choose only one option

Ensuring that the system meets fire safety standards for air ducts and equipment

Limiting the number of mechanical components used in HVAC systems

Ensuring that HVAC systems use only renewable energy sources

Installing HVAC systems with minimal electrical connections

Question 2: What is the first thing to check if an HVAC system is not turning on at all?

Which action should you take?

Choose only one option

Inspect the thermostat for any issues

Verify the refrigerant levels

Test the compressor's electrical connections

Inspect the power supply and check for tripped circuit breakers

Question 3: Which refrigerant is most commonly used in modern HVAC systems for commercial buildings?

Which action should you take?

Choose only one option

R-134a

R-22

R-123

R-410A

Question 4: How do variable refrigerant flow (VRF) systems differ from traditional HVAC systems?

Which action should you take?

Choose only one option

VRF systems are not as efficient as traditional systems

VRF systems only provide heating, not cooling

VRF systems allow for independent control of multiple zones, improving efficiency

VRF systems use a single compressor for all zones

Question 5: What is the primary function of the fan motor during routine HVAC maintenance inspections?

Which action should you take?

Choose only one option

To ensure it is operating smoothly and efficiently without any wear or overheating

To filter out air contaminants and dust

To regulate refrigerant flow through the coils

To circulate air inside the ducts for better flow

Question 6: According to OSHA regulations, what is the requirement for HVAC system maintenance in terms of worker safety?

Which action should you take?

Choose only one option

Workers should not engage in any HVAC maintenance work without proper PPE

The system must be tested annually but does not require continuous safety checks

All HVAC system maintenance must be done during off-hours to avoid worker exposure

The system must be regularly inspected and maintained to prevent health risks associated with air quality