NYC NYCHA Maintenance Worker
(CUNY) Exam Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. Which tool is most appropriate for tightening a hexagonal bolt?
A. Flathead screwdriver
B. Adjustable wrench
C. Hammer
D. Utility knife
Answer: B. Adjustable wrench
Rationale: An adjustable wrench is specifically designed to grip
and turn hexagonal nuts and bolts. A screwdriver or hammer
would not provide the proper grip or torque, and a utility knife is
unrelated to fastening tasks.
,2. What is the primary purpose of a circuit breaker?
A. To increase voltage
B. To reduce current flow permanently
C. To protect electrical circuits from overload
D. To store electricity
Answer: C. To protect electrical circuits from overload
Rationale: Circuit breakers automatically interrupt electrical flow
when current exceeds safe limits, preventing fires or equipment
damage. They are safety devices, not power enhancers or
storage tools.
3. Which material is commonly used for plumbing pipes due to its
resistance to corrosion?
A. Wood
B. Copper
C. Iron
D. Paper
Answer: B. Copper
Rationale: Copper is widely used in plumbing because it resists
corrosion, is durable, and can handle high temperatures and
, pressure. Wood and paper are unsuitable, while iron corrodes
easily.
4. What should be done first when discovering a water leak in an
apartment?
A. Paint over it
B. Turn off the water supply
C. Ignore it
D. Increase water pressure
Answer: B. Turn off the water supply
Rationale: Stopping the water source prevents further damage.
Painting or ignoring the issue does not solve the problem, and
increasing pressure would worsen the leak.
5. Which personal protective equipment (PPE) is essential when
handling chemicals?
A. Sandals
B. Gloves
C. Sunglasses
D. Hat
Answer: B. Gloves
, Rationale: Gloves protect the skin from harmful chemicals.
Sandals and hats provide no chemical protection, and sunglasses
are not adequate safety gear for handling hazardous substances.
6. What is the standard voltage in most residential buildings in the
United States?
A. 12 volts
B. 120 volts
C. 2400 volts
D. 480 volts
Answer: B. 120 volts
Rationale: Most residential outlets operate at 120 volts, which is
standard for household appliances. Higher voltages are typically
used in industrial settings.
7. Which tool is best for cutting metal pipes?
A. Pipe cutter
B. Paintbrush
C. Stapler
D. Broom
Answer: A. Pipe cutter
(CUNY) Exam Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. Which tool is most appropriate for tightening a hexagonal bolt?
A. Flathead screwdriver
B. Adjustable wrench
C. Hammer
D. Utility knife
Answer: B. Adjustable wrench
Rationale: An adjustable wrench is specifically designed to grip
and turn hexagonal nuts and bolts. A screwdriver or hammer
would not provide the proper grip or torque, and a utility knife is
unrelated to fastening tasks.
,2. What is the primary purpose of a circuit breaker?
A. To increase voltage
B. To reduce current flow permanently
C. To protect electrical circuits from overload
D. To store electricity
Answer: C. To protect electrical circuits from overload
Rationale: Circuit breakers automatically interrupt electrical flow
when current exceeds safe limits, preventing fires or equipment
damage. They are safety devices, not power enhancers or
storage tools.
3. Which material is commonly used for plumbing pipes due to its
resistance to corrosion?
A. Wood
B. Copper
C. Iron
D. Paper
Answer: B. Copper
Rationale: Copper is widely used in plumbing because it resists
corrosion, is durable, and can handle high temperatures and
, pressure. Wood and paper are unsuitable, while iron corrodes
easily.
4. What should be done first when discovering a water leak in an
apartment?
A. Paint over it
B. Turn off the water supply
C. Ignore it
D. Increase water pressure
Answer: B. Turn off the water supply
Rationale: Stopping the water source prevents further damage.
Painting or ignoring the issue does not solve the problem, and
increasing pressure would worsen the leak.
5. Which personal protective equipment (PPE) is essential when
handling chemicals?
A. Sandals
B. Gloves
C. Sunglasses
D. Hat
Answer: B. Gloves
, Rationale: Gloves protect the skin from harmful chemicals.
Sandals and hats provide no chemical protection, and sunglasses
are not adequate safety gear for handling hazardous substances.
6. What is the standard voltage in most residential buildings in the
United States?
A. 12 volts
B. 120 volts
C. 2400 volts
D. 480 volts
Answer: B. 120 volts
Rationale: Most residential outlets operate at 120 volts, which is
standard for household appliances. Higher voltages are typically
used in industrial settings.
7. Which tool is best for cutting metal pipes?
A. Pipe cutter
B. Paintbrush
C. Stapler
D. Broom
Answer: A. Pipe cutter
