KENTUCKY NCPCCI TEST 4C-MECHANICAL PLAN
REVIEW EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2027
|INSTANT DOWNLOAD PDF
1. During a mechanical plan review, what is the primary
purpose of an equipment schedule?
A. To identify architectural finishes
B. To identify mechanical equipment, capacities, and required
characteristics
C. To calculate structural loads only
D. To establish property boundaries
Correct Answer: B. To identify mechanical equipment,
capacities, and required characteristics
Rationale: An equipment schedule provides essential
information such as equipment type, capacity, efficiency, and
other specifications needed for plan review.
2. Which drawing normally provides the clearest information
about the routing of supply and return ducts?
A. Foundation plan
B. Reflected ceiling plan only
C. Mechanical floor plan
D. Structural framing plan
,Correct Answer: C. Mechanical floor plan
Rationale: The mechanical floor plan typically identifies duct
routing, equipment locations, diffusers, grilles, and related
systems.
3. What should a plan reviewer verify when evaluating duct
sizing?
A. Paint color
B. Required airflow and duct dimensions
C. Door hardware
D. Roof covering type
Correct Answer: B. Required airflow and duct dimensions
Rationale: Duct dimensions must be consistent with the
required airflow and system design.
4. A mechanical plan indicates a supply duct passing through a
fire-resistance-rated wall. What should the reviewer check
first?
A. Flooring material
B. Fire and smoke protection requirements at the penetration
C. Window glazing
D. Ceiling paint
Correct Answer: B. Fire and smoke protection requirements at
the penetration
Rationale: Duct penetrations through rated assemblies must be
reviewed for applicable fire/smoke damper and protection
requirements.
,5. What is the primary purpose of a fire damper?
A. Reduce duct noise
B. Prevent fire from passing through a duct opening in a rated
assembly
C. Increase airflow
D. Reduce electrical consumption
Correct Answer: B. Prevent fire from passing through a duct
opening in a rated assembly
Rationale: Fire dampers help maintain the fire-resistance
function of rated assemblies where ducts penetrate them.
6. Which component is primarily used to control airflow
direction or volume within a duct system?
A. Damper
B. Trap
C. Expansion tank
D. Relief valve
Correct Answer: A. Damper
Rationale: Dampers regulate or direct airflow within air
distribution systems.
7. What should a reviewer verify for flexible ductwork shown
on mechanical plans?
A. That it is unlimited in length
B. That it is properly sized and supported according to
applicable requirements
C. That it replaces all rigid ducts
D. That it is installed without insulation
, Correct Answer: B. That it is properly sized and supported
according to applicable requirements
Rationale: Flexible duct installations must meet applicable
requirements for sizing, support, routing, and insulation.
8. What is the primary function of a return-air system?
A. Supply combustion air
B. Return conditioned air to the air-handling equipment
C. Drain condensate
D. Exhaust combustion products
Correct Answer: B. Return conditioned air to the air-handling
equipment
Rationale: Return ducts transport air from occupied spaces
back to the air-handling unit.
9. A mechanical plan shows an air-handling unit without an
identified condensate disposal method. What should the
reviewer do?
A. Ignore it
B. Verify that an acceptable condensate disposal arrangement
is provided
C. Approve the plan automatically
D. Replace the unit with a boiler
Correct Answer: B. Verify that an acceptable condensate
disposal arrangement is provided
Rationale: Condensate-producing equipment requires an
appropriate drainage or disposal method.
REVIEW EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2027
|INSTANT DOWNLOAD PDF
1. During a mechanical plan review, what is the primary
purpose of an equipment schedule?
A. To identify architectural finishes
B. To identify mechanical equipment, capacities, and required
characteristics
C. To calculate structural loads only
D. To establish property boundaries
Correct Answer: B. To identify mechanical equipment,
capacities, and required characteristics
Rationale: An equipment schedule provides essential
information such as equipment type, capacity, efficiency, and
other specifications needed for plan review.
2. Which drawing normally provides the clearest information
about the routing of supply and return ducts?
A. Foundation plan
B. Reflected ceiling plan only
C. Mechanical floor plan
D. Structural framing plan
,Correct Answer: C. Mechanical floor plan
Rationale: The mechanical floor plan typically identifies duct
routing, equipment locations, diffusers, grilles, and related
systems.
3. What should a plan reviewer verify when evaluating duct
sizing?
A. Paint color
B. Required airflow and duct dimensions
C. Door hardware
D. Roof covering type
Correct Answer: B. Required airflow and duct dimensions
Rationale: Duct dimensions must be consistent with the
required airflow and system design.
4. A mechanical plan indicates a supply duct passing through a
fire-resistance-rated wall. What should the reviewer check
first?
A. Flooring material
B. Fire and smoke protection requirements at the penetration
C. Window glazing
D. Ceiling paint
Correct Answer: B. Fire and smoke protection requirements at
the penetration
Rationale: Duct penetrations through rated assemblies must be
reviewed for applicable fire/smoke damper and protection
requirements.
,5. What is the primary purpose of a fire damper?
A. Reduce duct noise
B. Prevent fire from passing through a duct opening in a rated
assembly
C. Increase airflow
D. Reduce electrical consumption
Correct Answer: B. Prevent fire from passing through a duct
opening in a rated assembly
Rationale: Fire dampers help maintain the fire-resistance
function of rated assemblies where ducts penetrate them.
6. Which component is primarily used to control airflow
direction or volume within a duct system?
A. Damper
B. Trap
C. Expansion tank
D. Relief valve
Correct Answer: A. Damper
Rationale: Dampers regulate or direct airflow within air
distribution systems.
7. What should a reviewer verify for flexible ductwork shown
on mechanical plans?
A. That it is unlimited in length
B. That it is properly sized and supported according to
applicable requirements
C. That it replaces all rigid ducts
D. That it is installed without insulation
, Correct Answer: B. That it is properly sized and supported
according to applicable requirements
Rationale: Flexible duct installations must meet applicable
requirements for sizing, support, routing, and insulation.
8. What is the primary function of a return-air system?
A. Supply combustion air
B. Return conditioned air to the air-handling equipment
C. Drain condensate
D. Exhaust combustion products
Correct Answer: B. Return conditioned air to the air-handling
equipment
Rationale: Return ducts transport air from occupied spaces
back to the air-handling unit.
9. A mechanical plan shows an air-handling unit without an
identified condensate disposal method. What should the
reviewer do?
A. Ignore it
B. Verify that an acceptable condensate disposal arrangement
is provided
C. Approve the plan automatically
D. Replace the unit with a boiler
Correct Answer: B. Verify that an acceptable condensate
disposal arrangement is provided
Rationale: Condensate-producing equipment requires an
appropriate drainage or disposal method.
