A refrigeration cycle in which the entire process takes place above the critical point is called a:

A) Sub-critical system. B) Trans-critical system.
C) Super-critical system. D) Non-critical system.


C

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Most GTA filler metals have some alloys, called ____________________, that can help prevent porosity caused by gases trapped in the base metal.

Fill in the blank(s) with the appropriate word(s).

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Technician A says that removing the plug wire from a spark plug while the engine is running could damage ignition system components. Technician B says that grounding a spark plug wire while the engine is running could damage ignition system components. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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What are the only byproducts left after ideal combustion in the internal combustion gasoline engine?

What will be an ideal response?

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A saddle piercing valve:

A) Is used to gain access to a sealed system. B) Is used to pierce the saddle on a manual service valve whose stem has been rounded off so the technician can still get a reading. C) Is the most common type of refrigeration service valve used on commercial refrigeration systems. D) Should be installed on all systems at the start of a service call.

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