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New York Skilled Trades & Construction
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A Instant Download Pdf
___________________________________________________________________
1. Which document establishes minimum requirements for the construction,
alteration, and maintenance of buildings in New York City?
A. New York State Labor Law only
B. New York City Construction Codes
C. Federal Highway Act
D. Uniform Commercial Code
Answer: New York City Construction Codes
Rationale: The New York City Construction Codes establish requirements
governing building construction, alteration, repair, maintenance, and related
work within NYC.
2. What is the primary purpose of a building permit?
A. To establish property ownership
B. To authorize regulated construction work
C. To determine property taxes
D. To replace an inspection
Answer: To authorize regulated construction work
,Rationale: A building permit provides legal authorization to perform work that
is subject to permitting requirements and allows the authority having
jurisdiction to oversee compliance.
3. Which type of protection is generally required when workers are exposed
to falling hazards on construction sites?
A. Hearing protection
B. Fall protection
C. Respiratory protection only
D. Welding screens
Answer: Fall protection
Rationale: Fall protection systems such as guardrails, personal fall arrest
systems, or other approved methods protect workers from elevated fall hazards.
4. What is the primary function of a guardrail system?
A. Provide temporary electrical power
B. Prevent workers from falling from elevated surfaces
C. Support concrete foundations
D. Control ventilation
Answer: Prevent workers from falling from elevated surfaces
Rationale: Guardrails provide a physical barrier at open-sided surfaces, helping
prevent workers from accidentally falling.
5. Which personal protective equipment is commonly required when workers
face hazards from falling or flying objects?
A. Hard hat
B. Rubber boots only
C. Respirator only
D. Welding apron only
Answer: Hard hat
,Rationale: A properly rated hard hat protects the head from impact and
penetration hazards associated with construction activities.
6. What is the safest practice before working on an electrical circuit?
A. Assume it is de-energized
B. De-energize, lock out, and verify the circuit
C. Remove the circuit breaker without testing
D. Work quickly before the circuit heats up
Answer: De-energize, lock out, and verify the circuit
Rationale: Lockout/tagout and verification help prevent accidental energization
while electrical work is being performed.
7. What does GFCI stand for?
A. Ground-Fault Circuit Interrupter
B. General Fuse Control Indicator
C. Ground Feed Current Installation
D. Generator Fault Circuit Interface
Answer: Ground-Fault Circuit Interrupter
Rationale: A GFCI detects an imbalance between current flowing through
ungrounded and grounded conductors and interrupts power to reduce shock
hazards.
8. What is the principal purpose of a GFCI?
A. Increase circuit voltage
B. Protect against electric shock
C. Increase motor speed
D. Reduce building heating costs
Answer: Protect against electric shock
, Rationale: GFCI protection is designed to disconnect power rapidly when a
ground-fault condition is detected.
9. What is the purpose of a circuit breaker?
A. Increase water pressure
B. Protect electrical circuits from excessive current
C. Support roof loads
D. Regulate gas pressure
Answer: Protect electrical circuits from excessive current
Rationale: Circuit breakers interrupt current when an overload or short circuit
occurs, helping protect conductors and equipment.
10.What is the main purpose of a grounding electrode system?
A. Increase lighting brightness
B. Establish a connection to earth for electrical systems
C. Increase plumbing pressure
D. Support structural beams
Answer: Establish a connection to earth for electrical systems
Rationale: Grounding electrode systems connect electrical systems to earth and
help provide a path for certain fault and transient currents.
11.What is the purpose of a plumbing trap?
A. Increase water temperature
B. Prevent sewer gases from entering a building
C. Increase pipe diameter
D. Reduce electrical resistance
Answer: Prevent sewer gases from entering a building
Rationale: The water seal in a properly installed trap blocks sewer gases from
passing through the fixture drain into occupied spaces.
New York Skilled Trades & Construction
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A Instant Download Pdf
___________________________________________________________________
1. Which document establishes minimum requirements for the construction,
alteration, and maintenance of buildings in New York City?
A. New York State Labor Law only
B. New York City Construction Codes
C. Federal Highway Act
D. Uniform Commercial Code
Answer: New York City Construction Codes
Rationale: The New York City Construction Codes establish requirements
governing building construction, alteration, repair, maintenance, and related
work within NYC.
2. What is the primary purpose of a building permit?
A. To establish property ownership
B. To authorize regulated construction work
C. To determine property taxes
D. To replace an inspection
Answer: To authorize regulated construction work
,Rationale: A building permit provides legal authorization to perform work that
is subject to permitting requirements and allows the authority having
jurisdiction to oversee compliance.
3. Which type of protection is generally required when workers are exposed
to falling hazards on construction sites?
A. Hearing protection
B. Fall protection
C. Respiratory protection only
D. Welding screens
Answer: Fall protection
Rationale: Fall protection systems such as guardrails, personal fall arrest
systems, or other approved methods protect workers from elevated fall hazards.
4. What is the primary function of a guardrail system?
A. Provide temporary electrical power
B. Prevent workers from falling from elevated surfaces
C. Support concrete foundations
D. Control ventilation
Answer: Prevent workers from falling from elevated surfaces
Rationale: Guardrails provide a physical barrier at open-sided surfaces, helping
prevent workers from accidentally falling.
5. Which personal protective equipment is commonly required when workers
face hazards from falling or flying objects?
A. Hard hat
B. Rubber boots only
C. Respirator only
D. Welding apron only
Answer: Hard hat
,Rationale: A properly rated hard hat protects the head from impact and
penetration hazards associated with construction activities.
6. What is the safest practice before working on an electrical circuit?
A. Assume it is de-energized
B. De-energize, lock out, and verify the circuit
C. Remove the circuit breaker without testing
D. Work quickly before the circuit heats up
Answer: De-energize, lock out, and verify the circuit
Rationale: Lockout/tagout and verification help prevent accidental energization
while electrical work is being performed.
7. What does GFCI stand for?
A. Ground-Fault Circuit Interrupter
B. General Fuse Control Indicator
C. Ground Feed Current Installation
D. Generator Fault Circuit Interface
Answer: Ground-Fault Circuit Interrupter
Rationale: A GFCI detects an imbalance between current flowing through
ungrounded and grounded conductors and interrupts power to reduce shock
hazards.
8. What is the principal purpose of a GFCI?
A. Increase circuit voltage
B. Protect against electric shock
C. Increase motor speed
D. Reduce building heating costs
Answer: Protect against electric shock
, Rationale: GFCI protection is designed to disconnect power rapidly when a
ground-fault condition is detected.
9. What is the purpose of a circuit breaker?
A. Increase water pressure
B. Protect electrical circuits from excessive current
C. Support roof loads
D. Regulate gas pressure
Answer: Protect electrical circuits from excessive current
Rationale: Circuit breakers interrupt current when an overload or short circuit
occurs, helping protect conductors and equipment.
10.What is the main purpose of a grounding electrode system?
A. Increase lighting brightness
B. Establish a connection to earth for electrical systems
C. Increase plumbing pressure
D. Support structural beams
Answer: Establish a connection to earth for electrical systems
Rationale: Grounding electrode systems connect electrical systems to earth and
help provide a path for certain fault and transient currents.
11.What is the purpose of a plumbing trap?
A. Increase water temperature
B. Prevent sewer gases from entering a building
C. Increase pipe diameter
D. Reduce electrical resistance
Answer: Prevent sewer gases from entering a building
Rationale: The water seal in a properly installed trap blocks sewer gases from
passing through the fixture drain into occupied spaces.
