It controls the quantity of refrigerant entering the evaporator

Cleans, dries and filters the refrigerant

Allows for an increase in pressure and temperature prior to entering the condenser

It acts as a safety device if the compressor is over pressuring the system

What are the impacts on the environment of fluorinated greenhouse gases?

Contributes to the global warming

Contributes to the formulation of acid rain

Mixes with the Nitrogen within the atmosphere to create a toxic substance, Nox

Has little or no detrimental effect

How could you confirm the type of refrigerant present in an air conditioning system?

By checking the identifier label located on the vehicle

The odour the refrigerant emits when released to atmosphere

The colour of the refrigerant which is visible through the sight glass in the top of the receiver drier

It does not matter as R12 and R134a are interchangeable

Which of the following is true about the optimum effective temperature for human comfort?

Higher in winter than in summer

Which of the following provides the relationship between the optimum indoor effective temperature and optimum outdoor effective temperature?

Climatic and seasonal differences

AIR CONDITIONING

Authored by BIBIN CHIDAMBARANATHAN

Education

University

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23 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a typical system, within which component would the evaporation of refrigerant take place?

Condenser

Receiver dryer

Evaporator

Compressor

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does MAC stand for?

Mobile Air Conditioning

Mechanical Air Conditioning

Mobile Air Compressor

Mechanical Air Compressor

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where would you expect to find a high pressure liquid within an AC system?

Between the compressor and the TXV

Between the TXV and the Evaporator

Between the compressor and the condenser

Between the Condenser and the TXV

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How would you know the air con gas has been fully recovered from the system?

The gauge on the high pressure side reads a positive pressure

The gauge on the low pressure side reads a negative pressure

Both gauges read zero pressure at the end of the recovery process

Both gauges read a positive pressure of 20 Bar at the end of the recovery process

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following would be carried out to confirm a system contained no refrigerant?

Press the service port valve on the low pressure side and listen for a gas leak

Connect the gauges to both high and low pressure ports to confirm a vacuum is present

Connect the Air Conditioning equipment and carry out a full recovery

Connect the gauges to both high and low pressure ports to confirm no pressure is present

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of refrigerant is R134a?

CFC

HCFC

HSBC

HFC

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does COSHH stand for?

Control of Substances Hazardous to health

Company omissions of safe Health hazards

Control of solutions hazardous to health

Control of Substances which are health hazardous

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AIR CONDITIONING

In a typical system, within which component would the evaporation of refrigerant take place?

What does MAC stand for?

Where would you expect to find a high pressure liquid within an AC system?

How would you know the air con gas has been fully recovered from the system?

Which of the following would be carried out to confirm a system contained no refrigerant?

What type of refrigerant is R134a?

What does COSHH stand for?

What does a TXV do?

If contamination within an air conditioning system is suspected and a flushing procedure is to be carried out what component should also be changed?

What are the impacts on the environment of fluorinated greenhouse gases?

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