The Purpose of Air Conditioning

To help remain safe on the job, it is always recommended that field personnel _______

• Test fire extinguisher operation regularly

• Test fire alarm operation before starting work

• Be aware of all potential hazards around them

• Work alone to prevent careless accidents

Which of the following represents three pieces of personal protection equipment (PPE).

• Ear Plugs, Ladders, Safety Gloves.

• Hard Hats, Ear Plugs, Work Boots.

• Back Brace, Safety Glasses, Plastic Banded Watches

• Short sleeved shirts,, Hard Hats, Work Boots

Which of the following can happen to a fully pressurized nitrogen cylinder if the top is broken off?

• Nitrogen will slowly leak out.

• There will be a loud bang.

• The tank can become airborne

• The nitrogen vapor will freeze

Which of the following tasks could potentially subject a service technician to frostbite?

• Connecting or removing a service hose from a suction line service port

• Connecting or removing a service hose from a liquid line service port

• Connecting or removing a service hose from a discharge line service port

• Connecting or removing a service hose from the inlet port on a vacuum pump

Which of the following statements is true regarding the use of nitrogen.

• The nitrogen tank must be fitted with a pressure regulator.

• Nitrogen must only be added to systems that are in a deep vacuum

• Nitrogen must only be added to fully charged HVAC/R systems

• Dry nitrogen is a volatile gas that follows a pressure/temperature relationship.

What can happen when oil is mixed with oxygen under pressure?

• An explosion an occur

• The ability of the oil to lubricate will increase

• The mixture will solidify

• Methane gas will form

Which organ is most likely to be affected by electrical shock?

• Liver

• Kidney

• Lungs

• Heart

When electrical current flows through the body, which of the following injuries will commonly result?

• Hearing loss

• Shocks and Burns

• Death and hearing loss

• Burns and Death

Which of the following factors will most directly determine the severity of an electric shock?

• Current flow through the victim

• THe height of the victem

• The weight of the victim

• Voltage that the victim is subject to

Which of the following statements is true regarding working on electrical circuits?

• Ensure that the circuit power is on whenever working on electric circuits

• Metallic jewelry reduces the possibility of receiving an electrical shock

• Be sure to use proper lock-out and Tag-out procedures on all equipment

• Using Aluminium ladders will protect individuals from electricity related injuries