HVAC Basics Quiz

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Test your HVAC refrigerant know-how

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HVAC Basics Quiz


Froggy Jumps HVAC Basics QuizVersión en línea Test your HVAC refrigerant know-how por 1 MeanIt 1 What stage of the refrigeration cycle compresses the refrigerant to high pressure? a Compression b Condensation c Expansion 2 In the refrigeration cycle, what happens during condensation? a Absorbs heat and becomes gas b Releases heat and becomes liquid c Absorbs heat and remains liquid 3 What is the function of the expansion valve? a Increase refrigerant temperature b Reduce refrigerant pressure c Compress refrigerant 4 During evaporation, the refrigerant turns into what state? a Gas b Solid c Liquid 5 Which line carries high-pressure liquid refrigerant to the expansion valve? a Suction line b Discharge line c Liquid line 6 Which line returns low-pressure gas refrigerant to the compressor? a Liquid line b Suction line c Discharge line 7 What should be checked before charging a system with refrigerant? a System leaks b Electrical resistance c Oil level 8 What is a key hazard symbol for refrigerants that can ignite easily? a Flammable b Corrosive c Non-flammable 9 Which stage follows expansion in the cycle? a Condensation b Evaporation c Compression 10 What is the main purpose of the refrigerant in the condensate stage? a Release heat to surroundings b Stabilize pressure c Absorb heat from surroundings 11 Which component increases the pressure and temperature of the refrigerant? a Condenser b Expansion valve c Compressor 12 In a window air conditioner, what is the initial charging percentage commonly used? a 10% b 30% c 50% 13 What should be verified on the system before charging after evacuation? a Leaks b Electrical load c Oil type 14 Which part of the cycle carries high-pressure vapor to high-pressure liquid? a Evaporator b Condenser c Expansion valve 15 What happens to the refrigerant in the suction line? a Becomes high-pressure liquid b Stays high-pressure gas c Returns as low-pressure gas 16 What is the purpose of weighing the refrigerant during charging? a Monitor total charge b Measure ambient temperature c Test electrical continuity 17 Which operation checks system performance after charging? a Run the air conditioner b Disconnect the compressor c Fill more refrigerant 18 What should be inspected for after charging to ensure safety? a Overcurrent b Excess oil c Leaks 19 What is the term for high-pressure liquid refrigerant in the cycle? a Low-pressure liquid b High-pressure liquid c Low-pressure vapor 20 Which stage converts liquid to gas by absorbing heat? a Compression b Evaporation c Condensation 21 What action is used to monitor the correct total charge during charging? a Pressure gauge b Thermometer c Weighing scale 22 Which valve is opened to enter the system flow during charging? a Release valve b High-Pressure valve c Low-Pressure hand valve 23 What does the liquid line connect in the cycle? a Compressor to condenser b Condenser to expansion valve c Evaporator to compressor 24 What does the suction line connect in the cycle? a Evaporator to compressor b Tank to gauge c Condenser to expansion valve 25 Which device reads pressure in HVAC systems during charging? a Manifold gauge b Thermostat c Amp meter 26 What should be checked if leaks are suspected before charging? a Airflow b System leaks c Electrical grounding 27 Which stage follows compression in the cycle? a Condensation b Expansion c Evaporation 28 What is the recommended action if the charge exceeds the target during weighing? a Ignore the reading b Increase charger input c Stop and recheck 29 Which gauge valve is opened first during recovery with low pressure? a High-pressure valve b Service port valve c Low-pressure valve 30 What is the outcome of opening the high-pressure valve during recovery? a Recovery of refrigerant b Blockage of flow c Release of refrigerant to atmosphere 31 What should be done after reaching desired charge in the 30% stage? a Close the R32 tank valve b Open the tank wider c Continue feeding indefinitely 32 What should be checked in the final charging stage besides charge amount? a Color of refrigerant b Brand of oil c System performance 33 Which hazard is related to pressurized gas in containers? a Non-flammable b Lubricated c Compressed Gas 34 Which stage uses the expansion valve to lower pressure? a Compression b Condensation c Expansion 35 Which statement is true about the liquid line? a Carries oil only b Carries high-pressure liquid refrigerant c Carries low-pressure vapor 36 Which statement is true about the suction line? a Carries low-pressure gas to the compressor b Carries oil only c Carries high-pressure liquid 37 What should be zeroed before charging on a weighing scale? a Pressure gauge b Weighing scale c Thermometer 38 What is a key step after finishing charging and testing? a Fill extra refrigerant b Check for leaks c Power down system 39 Which symbol is associated with oxidizing hazards in refrigerants? a Oxidizing b Flammable c Toxic 40 What is the purpose of the final run test after charging? a Check system performance b Adjust valve blades c Change refrigerant type 41 Which stage involves refrigerant absorbing heat from surroundings? a Condensation b Evaporation c Compression 42 What is monitored to ensure correct charge during initial charging? a Ambient temperature b Weighing scale c Fan speed 43 Which component is involved in pushing refrigerant through the system? a Compressor b Fan c Thermostat 44 What should be done if a leak is found during charging process? a Add more refrigerant anyway b Repair leak before continuing c Ignore and proceed 45 What is the typical purpose of a gauge manifold in charging? a Monitor pressures b Check oil level c Measure humidity 46 Which hazard symbol indicates explosive risk? a Explosive b Corrosive c Toxic 47 What is the correct order of the refrigeration cycle stages? a Compression → Condensation → Expansion → Evaporation b Condensation → Expansion → Compression → Evaporation c Evaporation → Compression → Condensation → Expansion

HVAC Basics Quiz

Froggy Jumps

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HVAC Basics QuizVersión en línea

por 1 MeanIt

What stage of the refrigeration cycle compresses the refrigerant to high pressure?

In the refrigeration cycle, what happens during condensation?

What is the function of the expansion valve?

During evaporation, the refrigerant turns into what state?

Which line carries high-pressure liquid refrigerant to the expansion valve?

Which line returns low-pressure gas refrigerant to the compressor?

What should be checked before charging a system with refrigerant?

What is a key hazard symbol for refrigerants that can ignite easily?

Which stage follows expansion in the cycle?

What is the main purpose of the refrigerant in the condensate stage?

Which component increases the pressure and temperature of the refrigerant?

In a window air conditioner, what is the initial charging percentage commonly used?

What should be verified on the system before charging after evacuation?

Which part of the cycle carries high-pressure vapor to high-pressure liquid?

What happens to the refrigerant in the suction line?

What is the purpose of weighing the refrigerant during charging?

Which operation checks system performance after charging?

What should be inspected for after charging to ensure safety?

What is the term for high-pressure liquid refrigerant in the cycle?

Which stage converts liquid to gas by absorbing heat?

What action is used to monitor the correct total charge during charging?

Which valve is opened to enter the system flow during charging?

What does the liquid line connect in the cycle?

What does the suction line connect in the cycle?

Which device reads pressure in HVAC systems during charging?

What should be checked if leaks are suspected before charging?

Which stage follows compression in the cycle?

What is the recommended action if the charge exceeds the target during weighing?

Which gauge valve is opened first during recovery with low pressure?

What is the outcome of opening the high-pressure valve during recovery?

What should be done after reaching desired charge in the 30% stage?

What should be checked in the final charging stage besides charge amount?

Which hazard is related to pressurized gas in containers?

Which stage uses the expansion valve to lower pressure?

Which statement is true about the liquid line?

Which statement is true about the suction line?

What should be zeroed before charging on a weighing scale?

What is a key step after finishing charging and testing?

Which symbol is associated with oxidizing hazards in refrigerants?

What is the purpose of the final run test after charging?

Which stage involves refrigerant absorbing heat from surroundings?

What is monitored to ensure correct charge during initial charging?

Which component is involved in pushing refrigerant through the system?

What should be done if a leak is found during charging process?

What is the typical purpose of a gauge manifold in charging?

Which hazard symbol indicates explosive risk?

What is the correct order of the refrigeration cycle stages?