FDNY A-35 Certificate of Fitness Exam Questions and Answers
2023/2024/2025/2026 Study Guide | Complete Practice Test Bank with
140+ Real Exam Questions and 100% Correct Answers | Latest Updated
Version with Detailed Rationales and NYC Fire Code References |
Covers All Essential Topics: Air Compressors, Refrigeration Systems,
Emergency Shutdown Procedures, Sprinkler Interlocks, Fire Alarm
Connections, Record Keeping, and FDNY Inspection Protocols | A+
Graded Material for Building Operators and Maintenance Engineers |
Pass on Your First Attempt with Guaranteed Results
Section 1: Basic Concepts & Permit Requirements
Q1. What is the primary purpose of the FDNY A-35 Certificate of Fitness?
• A) To certify elevator inspectors
• B) To certify individuals responsible for air compressor operation and
maintenance
• C) To certify security guards
• D) To certify plumbers
Answer: B
Rationale: The A-35 Certificate of Fitness is required for qualified personnel responsible
for operating and maintaining air compressors in accordance with FDNY regulations .
Q2. A FDNY permit is required if a compressor is used to compress any
nonflammable, corrosive, or oxidizing gas, including air, to a pressure exceeding:
• A) 50 psi
• B) 75 psi
• C) 100 psi
• D) 150 psi
,Answer: C
Rationale: A FDNY permit is required for any air compressor that compresses non-
flammable gas at pressures above 100 psi .
Q3. The person using the air compressor must have which of the following?
• A) A valid driver's license
• B) A Certificate of Fitness (A-35)
• C) A building permit
• D) A contractor's license
Answer: B
Rationale: The person using the air compressor must have an A-35 Certificate of Fitness.
This certificate is only valid for the person to whom it is issued .
Q4. How often must the A-35 Certificate of Fitness be renewed?
• A) Every year
• B) Every 2 years
• C) Every 3 years
• D) Every 5 years
Answer: C
Rationale: The certificate must be renewed every three years. FDNY sends a renewal
notice 90 days before expiration .
Q5. A FDNY permit is NOT required for:
• A) Indoor air compressors above 100 psi
• B) Outdoor air compressors (except at fairs or festivals)
, • C) Compressors used in manufacturing
• D) Compressors used in auto repair shops
Answer: B
Rationale: Outdoor air compression (except at fairs or festivals) does not require a
permit .
Section 2: Types of Air Compressors
Q6. The most commonly used air compressor is a:
• A) Centrifugal compressor
• B) Rotary compressor
• C) Reciprocating compressor
• D) Solar compressor
Answer: C
Rationale: The reciprocating air compressor is the most common type. It operates using
a piston inside a cylinder .
Q7. Which of the following are types of air compressors?
• A) Reciprocating, centrifugal, rotary, and scroll
• B) Reciprocating, centrifugal, rotary, and solar
• C) Reciprocating, centrifugal, turbine, and solar
• D) Piston, turbine, rotary, and scroll
Answer: B
Rationale: The types of air compressors are reciprocating, centrifugal, rotary, and solar.
They differ in the way they compress air .
, Q8. An air compressor with one cylinder and one piston is called a:
• A) Multi-stage compressor
• B) Single-stage compressor
• C) Double-action compressor
• D) Rotary compressor
Answer: B
Rationale: A single-stage air compressor has one cylinder and one piston .
Q9. An air compressor with more than one cylinder and piston is called a:
• A) Single-stage compressor
• B) Multi-stage compressor
• C) Compound compressor
• D) Two-stage compressor only
Answer: B
Rationale: A multi-stage air compressor has more than one piston and cylinder. Each
cylinder increases the pressure to a new level .
Q10. Which compressor type uses rotating screws to compress air?
• A) Reciprocating
• B) Centrifugal
• C) Rotary screw
• D) Linear
Answer: C
Rationale: Rotary screw compressors use two intermeshing helical screws to compress
air .
2023/2024/2025/2026 Study Guide | Complete Practice Test Bank with
140+ Real Exam Questions and 100% Correct Answers | Latest Updated
Version with Detailed Rationales and NYC Fire Code References |
Covers All Essential Topics: Air Compressors, Refrigeration Systems,
Emergency Shutdown Procedures, Sprinkler Interlocks, Fire Alarm
Connections, Record Keeping, and FDNY Inspection Protocols | A+
Graded Material for Building Operators and Maintenance Engineers |
Pass on Your First Attempt with Guaranteed Results
Section 1: Basic Concepts & Permit Requirements
Q1. What is the primary purpose of the FDNY A-35 Certificate of Fitness?
• A) To certify elevator inspectors
• B) To certify individuals responsible for air compressor operation and
maintenance
• C) To certify security guards
• D) To certify plumbers
Answer: B
Rationale: The A-35 Certificate of Fitness is required for qualified personnel responsible
for operating and maintaining air compressors in accordance with FDNY regulations .
Q2. A FDNY permit is required if a compressor is used to compress any
nonflammable, corrosive, or oxidizing gas, including air, to a pressure exceeding:
• A) 50 psi
• B) 75 psi
• C) 100 psi
• D) 150 psi
,Answer: C
Rationale: A FDNY permit is required for any air compressor that compresses non-
flammable gas at pressures above 100 psi .
Q3. The person using the air compressor must have which of the following?
• A) A valid driver's license
• B) A Certificate of Fitness (A-35)
• C) A building permit
• D) A contractor's license
Answer: B
Rationale: The person using the air compressor must have an A-35 Certificate of Fitness.
This certificate is only valid for the person to whom it is issued .
Q4. How often must the A-35 Certificate of Fitness be renewed?
• A) Every year
• B) Every 2 years
• C) Every 3 years
• D) Every 5 years
Answer: C
Rationale: The certificate must be renewed every three years. FDNY sends a renewal
notice 90 days before expiration .
Q5. A FDNY permit is NOT required for:
• A) Indoor air compressors above 100 psi
• B) Outdoor air compressors (except at fairs or festivals)
, • C) Compressors used in manufacturing
• D) Compressors used in auto repair shops
Answer: B
Rationale: Outdoor air compression (except at fairs or festivals) does not require a
permit .
Section 2: Types of Air Compressors
Q6. The most commonly used air compressor is a:
• A) Centrifugal compressor
• B) Rotary compressor
• C) Reciprocating compressor
• D) Solar compressor
Answer: C
Rationale: The reciprocating air compressor is the most common type. It operates using
a piston inside a cylinder .
Q7. Which of the following are types of air compressors?
• A) Reciprocating, centrifugal, rotary, and scroll
• B) Reciprocating, centrifugal, rotary, and solar
• C) Reciprocating, centrifugal, turbine, and solar
• D) Piston, turbine, rotary, and scroll
Answer: B
Rationale: The types of air compressors are reciprocating, centrifugal, rotary, and solar.
They differ in the way they compress air .
, Q8. An air compressor with one cylinder and one piston is called a:
• A) Multi-stage compressor
• B) Single-stage compressor
• C) Double-action compressor
• D) Rotary compressor
Answer: B
Rationale: A single-stage air compressor has one cylinder and one piston .
Q9. An air compressor with more than one cylinder and piston is called a:
• A) Single-stage compressor
• B) Multi-stage compressor
• C) Compound compressor
• D) Two-stage compressor only
Answer: B
Rationale: A multi-stage air compressor has more than one piston and cylinder. Each
cylinder increases the pressure to a new level .
Q10. Which compressor type uses rotating screws to compress air?
• A) Reciprocating
• B) Centrifugal
• C) Rotary screw
• D) Linear
Answer: C
Rationale: Rotary screw compressors use two intermeshing helical screws to compress
air .
