Universal R-410A Test UPDATED ACTUAL
Exam Questions and CORRECT Answers
Subcooling - CORRECT ANSWER - When Charging a 410a system that uses a TXV,
proper charge is determined measuring
Superheat - CORRECT ANSWER - When charging a r410a system using a Capillary tube
or fix metering device popper charge is determined by measuring
DOT 4BA 400 - CORRECT ANSWER - Recovery cylinders use with R4 10 must have a
DOT rating of
550 psig to 625 psig - CORRECT ANSWER - Compressor internal pressure relief settings
for r410a systems are
Lose or gain - CORRECT ANSWER - Sub cooled liquid in the receiver may __
subcooling, depending on surrounding conditions
600 psig - CORRECT ANSWER - When installing a liquid line filter dryer on a R410a
system it must have a pressure rating of at least
The flow area of an R410a meter in device - CORRECT ANSWER - May separate
(fractionate) into its component refrigerants
A true azeotropic blend: - CORRECT ANSWER - Will not fractionate, has no temperature
glide, and behaves as a single component refrigerant.
When a blend is zeotropic, or near-azeotropic (NARM): - CORRECT ANSWER - Leaks
me cause a change in composition of the blend it will have a temperature glide and it can
fractionate
Exam Questions and CORRECT Answers
Subcooling - CORRECT ANSWER - When Charging a 410a system that uses a TXV,
proper charge is determined measuring
Superheat - CORRECT ANSWER - When charging a r410a system using a Capillary tube
or fix metering device popper charge is determined by measuring
DOT 4BA 400 - CORRECT ANSWER - Recovery cylinders use with R4 10 must have a
DOT rating of
550 psig to 625 psig - CORRECT ANSWER - Compressor internal pressure relief settings
for r410a systems are
Lose or gain - CORRECT ANSWER - Sub cooled liquid in the receiver may __
subcooling, depending on surrounding conditions
600 psig - CORRECT ANSWER - When installing a liquid line filter dryer on a R410a
system it must have a pressure rating of at least
The flow area of an R410a meter in device - CORRECT ANSWER - May separate
(fractionate) into its component refrigerants
A true azeotropic blend: - CORRECT ANSWER - Will not fractionate, has no temperature
glide, and behaves as a single component refrigerant.
When a blend is zeotropic, or near-azeotropic (NARM): - CORRECT ANSWER - Leaks
me cause a change in composition of the blend it will have a temperature glide and it can
fractionate
