NATE AIR DISTRIBUTION QUESTIONS AND ANSWERS
Air follows _________________, just as electricity does
A. Path of least resistance
B. Path of greatest resistance
C. Coolest path
D. Warmest path - Answers- A
The temperature rise method cannot be used with ________.
A. Air conditioning systems
B. Heat pumps
C. Air conditioning or heat pumps
D. Auxiliary heat systems - Answers- C
Temperature rise method is commonly used with _________
A. Auxiliary equipment
B. Heating equipment
C. Cooling equipment
D. Electrical equipment - Answers- B
Temperature rise is _______
A. The temperature inside a component
B. Temperature around a component
C. The difference in temperature between two points
D. The temperature of a component when it's cool vs. when it's hot - Answers- C
Most residential units are designed to deliver the CFM for an AHRI-rated match at an
available ESP of up to _______ in. wc.
A. .4
B. .6
C. .3
D. .5 - Answers- D
Properly sized duct work should be designed with friction rates of nor more than ____
static pressure per 100 feet of duct on the supply side and ______ on the return side
A. .1 / .08
B. .5 / .1
C. .08 / .5
D. .5 / .08 - Answers- A
The manual used for residential load calculation is?
A. Manual J
B. Manual N
, C. Manual D
D. Manual Q - Answers- A
Manual used for commercial load calculation
A. Manual J
B. Manual N
C. Manual D
D. Manual Q - Answers- B
Manual used for residential duct design
A. Manual J
B. Manual N
C. Manual D
D. Manual Q - Answers- C
Manual used for commercial duct design
A. Manual J
B. Manual N
C. Manual D
D. Manual Q - Answers- D
Any increase in the static pressure on either side of the system will cause ______
A. An increase in total air flow
B. Air flow to remain constant
C. A decrease in total air flow
D. Air flow is proportional to static pressure - Answers- C
_________ can cause an increase in static pressure
A. Dirty filters
B. Closed dampers
C. Opening dampers
D. A & B - Answers- D
________ will reduce static pressure
A. Adding return grills
B. Clean filters
C. Obstructed coils
D. A & B - Answers- D
"ESP" means
A. External static pressure
B. Extra sensible pressure
C. Enthalpy supplied pressure
D. External sensible pressure - Answers- A
Air follows _________________, just as electricity does
A. Path of least resistance
B. Path of greatest resistance
C. Coolest path
D. Warmest path - Answers- A
The temperature rise method cannot be used with ________.
A. Air conditioning systems
B. Heat pumps
C. Air conditioning or heat pumps
D. Auxiliary heat systems - Answers- C
Temperature rise method is commonly used with _________
A. Auxiliary equipment
B. Heating equipment
C. Cooling equipment
D. Electrical equipment - Answers- B
Temperature rise is _______
A. The temperature inside a component
B. Temperature around a component
C. The difference in temperature between two points
D. The temperature of a component when it's cool vs. when it's hot - Answers- C
Most residential units are designed to deliver the CFM for an AHRI-rated match at an
available ESP of up to _______ in. wc.
A. .4
B. .6
C. .3
D. .5 - Answers- D
Properly sized duct work should be designed with friction rates of nor more than ____
static pressure per 100 feet of duct on the supply side and ______ on the return side
A. .1 / .08
B. .5 / .1
C. .08 / .5
D. .5 / .08 - Answers- A
The manual used for residential load calculation is?
A. Manual J
B. Manual N
, C. Manual D
D. Manual Q - Answers- A
Manual used for commercial load calculation
A. Manual J
B. Manual N
C. Manual D
D. Manual Q - Answers- B
Manual used for residential duct design
A. Manual J
B. Manual N
C. Manual D
D. Manual Q - Answers- C
Manual used for commercial duct design
A. Manual J
B. Manual N
C. Manual D
D. Manual Q - Answers- D
Any increase in the static pressure on either side of the system will cause ______
A. An increase in total air flow
B. Air flow to remain constant
C. A decrease in total air flow
D. Air flow is proportional to static pressure - Answers- C
_________ can cause an increase in static pressure
A. Dirty filters
B. Closed dampers
C. Opening dampers
D. A & B - Answers- D
________ will reduce static pressure
A. Adding return grills
B. Clean filters
C. Obstructed coils
D. A & B - Answers- D
"ESP" means
A. External static pressure
B. Extra sensible pressure
C. Enthalpy supplied pressure
D. External sensible pressure - Answers- A
