Page 1 of 13
“NATE A/C EXAM ”latest exam solved questions &
answers verified 100% graded a+ (latest version) well
revised guarantee pass
NATE A/C Exam #1
The higher the MERV rating of a filter-drier, the
A: More efficient the drier at absorbing moisture
B: Less efficient the drier at absorbing moisture
C: Smaller the particles the filter can entrap
D: MERV does not apply to filter-driers
D: MERV does not apply to filter-driers
Minimum Efficiency Reporting Value - MERV ratings are used to rate the ability of an
air conditioning filter to remove dust from the air as it passes through the filter.
MERV is a standard used to measure the overall efficiency of a filter. Higher MERV
ratings mean fewer dust particles and other airborne contaminants pass through the
filter. Filters with a merv rating of 9 to 12 are used in commercial and industrial
applications and will stop particles in the 1 to 3 micron range. These filters are a
great choice for home owners who want the best dust control possible. When using
filters with Merv 9 ratings and above it is important to clean or replace them when
recommended by the manufacturer because they will have a negative effect on air
flow when they become dirty. This can lead to performance problems and decreased
operating efficiency. The most efficient filters have merv ratings of 13 to 16 and will
stop particles as small as .3 microns. These filters are used in hospitals and other
super clean environments.
Zeolite is used with
A: Refrigerant filter-driers
B: HEPA filters
C: Pipe threads
D: Solder
A: Refrigerant filter-driers
, Page 2 of 13
Vacuum pressures are measured in
A: Microns
B: Millimeters of mercury
C: Inches of mercury
D: All of the above
D: All of the above
The number 25,400 relates to
A: Microns/inch
B: Btu/ton
C: Cfm/hp
D: Cfm/ton
A: Microns/inch
The general rule of thumb for airflow is
A: 400 cfm/ton
B: 400 cfm/hp
C: 6 cfm/sq
D: 144 cfm/cu
A: 400 cfm/ton
A double suction riser is used to
A: Help improve refrigerant return
B: Allow the compressor to pump at a greater capacity
C: Decrease suction line resistance
D: Improve oil return as system capacity changes
D: Improve oil return as system capacity changes
A service technician measures a return air temperature of 80 degrees and a
supply air temperature of 55 degrees. What, if anything, may be wrong with
this air residential split system air conditioning unit?
A: Low on refrigerant charge
B: Low on evaporator airflow
C: Refrigerant overcharge
“NATE A/C EXAM ”latest exam solved questions &
answers verified 100% graded a+ (latest version) well
revised guarantee pass
NATE A/C Exam #1
The higher the MERV rating of a filter-drier, the
A: More efficient the drier at absorbing moisture
B: Less efficient the drier at absorbing moisture
C: Smaller the particles the filter can entrap
D: MERV does not apply to filter-driers
D: MERV does not apply to filter-driers
Minimum Efficiency Reporting Value - MERV ratings are used to rate the ability of an
air conditioning filter to remove dust from the air as it passes through the filter.
MERV is a standard used to measure the overall efficiency of a filter. Higher MERV
ratings mean fewer dust particles and other airborne contaminants pass through the
filter. Filters with a merv rating of 9 to 12 are used in commercial and industrial
applications and will stop particles in the 1 to 3 micron range. These filters are a
great choice for home owners who want the best dust control possible. When using
filters with Merv 9 ratings and above it is important to clean or replace them when
recommended by the manufacturer because they will have a negative effect on air
flow when they become dirty. This can lead to performance problems and decreased
operating efficiency. The most efficient filters have merv ratings of 13 to 16 and will
stop particles as small as .3 microns. These filters are used in hospitals and other
super clean environments.
Zeolite is used with
A: Refrigerant filter-driers
B: HEPA filters
C: Pipe threads
D: Solder
A: Refrigerant filter-driers
, Page 2 of 13
Vacuum pressures are measured in
A: Microns
B: Millimeters of mercury
C: Inches of mercury
D: All of the above
D: All of the above
The number 25,400 relates to
A: Microns/inch
B: Btu/ton
C: Cfm/hp
D: Cfm/ton
A: Microns/inch
The general rule of thumb for airflow is
A: 400 cfm/ton
B: 400 cfm/hp
C: 6 cfm/sq
D: 144 cfm/cu
A: 400 cfm/ton
A double suction riser is used to
A: Help improve refrigerant return
B: Allow the compressor to pump at a greater capacity
C: Decrease suction line resistance
D: Improve oil return as system capacity changes
D: Improve oil return as system capacity changes
A service technician measures a return air temperature of 80 degrees and a
supply air temperature of 55 degrees. What, if anything, may be wrong with
this air residential split system air conditioning unit?
A: Low on refrigerant charge
B: Low on evaporator airflow
C: Refrigerant overcharge
