___________________________________________________________________
NYC Health + Hospitals Supervising
Maintenance Mechanic Examination
Practice Exam 2026 | 100 Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. What is the primary purpose of preventive maintenance in a healthcare
facility?
A. To eliminate all equipment failures
B. To reduce unexpected failures and extend equipment life
C. To increase equipment operating temperatures
D. To eliminate the need for inspections
Answer: To reduce unexpected failures and extend equipment life
Rationale: Preventive maintenance identifies and corrects developing problems
before they result in major failures, downtime, or unsafe conditions.
2. Which instrument is commonly used to measure electrical voltage?
A. Ammeter
B. Megohmmeter
C. Voltmeter
D. Tachometer
Answer: Voltmeter
,Rationale: A voltmeter measures the electrical potential difference, or voltage,
between two points in a circuit.
3. Before servicing a motor connected to an electrical power source, what
should be performed first?
A. Increase the motor speed
B. Apply lubricant
C. Lockout/tagout the energy source
D. Remove the motor coupling
Answer: Lockout/tagout the energy source
Rationale: Lockout/tagout prevents unexpected energization or startup while
maintenance personnel are working on equipment.
4. What is the main function of a circuit breaker?
A. Increase voltage
B. Protect a circuit from excessive current
C. Lubricate electrical contacts
D. Reduce mechanical vibration
Answer: Protect a circuit from excessive current
Rationale: Circuit breakers interrupt electrical current when an overload or short
circuit exceeds the protective device's rating.
5. Which component of a centrifugal pump converts rotational energy into
fluid movement?
A. Impeller
B. Packing gland
C. Mechanical seal
D. Bearing housing
Answer: Impeller
,Rationale: The impeller transfers rotational energy to the fluid, increasing its
velocity and contributing to the development of pressure.
6. What condition can result when air enters the suction side of a centrifugal
pump?
A. Improved pump efficiency
B. Loss of prime and possible cavitation
C. Increased lubrication
D. Reduced pipe friction
Answer: Loss of prime and possible cavitation
Rationale: Air entering the suction side can interfere with proper fluid flow,
cause loss of prime, and contribute to unstable pump operation.
7. What is the purpose of a mechanical seal on a pump shaft?
A. Increase motor voltage
B. Prevent fluid from leaking along the rotating shaft
C. Increase pump speed
D. Measure discharge pressure
Answer: Prevent fluid from leaking along the rotating shaft
Rationale: A mechanical seal provides a controlled sealing interface between
the rotating shaft and stationary pump housing.
8. Which type of wrench is generally preferred for tightening a fastener to a
specified torque?
A. Pipe wrench
B. Adjustable wrench
C. Torque wrench
D. Basin wrench
Answer: Torque wrench
, Rationale: A torque wrench allows a fastener to be tightened to the
manufacturer's specified torque, helping prevent under-tightening or damage
from over-tightening.
9. What is the primary purpose of a bearing?
A. Generate electricity
B. Support moving components and reduce friction
C. Increase pipe pressure
D. Remove moisture from air
Answer: Support moving components and reduce friction
Rationale: Bearings support shafts and other moving components while
allowing controlled movement with reduced friction.
10.Excessive vibration in a rotating pump or motor may indicate:
A. Perfect alignment
B. Misalignment, imbalance, or bearing problems
C. Correct lubrication only
D. Normal operation in every case
Answer: Misalignment, imbalance, or bearing problems
Rationale: Excessive vibration is a common symptom of mechanical problems
such as shaft misalignment, rotor imbalance, worn bearings, or looseness.
11.What is the primary purpose of shaft alignment between a motor and
pump?
A. Increase electrical resistance
B. Prevent excessive mechanical stress and vibration
C. Reduce water temperature
D. Increase pipe diameter
Answer: Prevent excessive mechanical stress and vibration
NYC Health + Hospitals Supervising
Maintenance Mechanic Examination
Practice Exam 2026 | 100 Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. What is the primary purpose of preventive maintenance in a healthcare
facility?
A. To eliminate all equipment failures
B. To reduce unexpected failures and extend equipment life
C. To increase equipment operating temperatures
D. To eliminate the need for inspections
Answer: To reduce unexpected failures and extend equipment life
Rationale: Preventive maintenance identifies and corrects developing problems
before they result in major failures, downtime, or unsafe conditions.
2. Which instrument is commonly used to measure electrical voltage?
A. Ammeter
B. Megohmmeter
C. Voltmeter
D. Tachometer
Answer: Voltmeter
,Rationale: A voltmeter measures the electrical potential difference, or voltage,
between two points in a circuit.
3. Before servicing a motor connected to an electrical power source, what
should be performed first?
A. Increase the motor speed
B. Apply lubricant
C. Lockout/tagout the energy source
D. Remove the motor coupling
Answer: Lockout/tagout the energy source
Rationale: Lockout/tagout prevents unexpected energization or startup while
maintenance personnel are working on equipment.
4. What is the main function of a circuit breaker?
A. Increase voltage
B. Protect a circuit from excessive current
C. Lubricate electrical contacts
D. Reduce mechanical vibration
Answer: Protect a circuit from excessive current
Rationale: Circuit breakers interrupt electrical current when an overload or short
circuit exceeds the protective device's rating.
5. Which component of a centrifugal pump converts rotational energy into
fluid movement?
A. Impeller
B. Packing gland
C. Mechanical seal
D. Bearing housing
Answer: Impeller
,Rationale: The impeller transfers rotational energy to the fluid, increasing its
velocity and contributing to the development of pressure.
6. What condition can result when air enters the suction side of a centrifugal
pump?
A. Improved pump efficiency
B. Loss of prime and possible cavitation
C. Increased lubrication
D. Reduced pipe friction
Answer: Loss of prime and possible cavitation
Rationale: Air entering the suction side can interfere with proper fluid flow,
cause loss of prime, and contribute to unstable pump operation.
7. What is the purpose of a mechanical seal on a pump shaft?
A. Increase motor voltage
B. Prevent fluid from leaking along the rotating shaft
C. Increase pump speed
D. Measure discharge pressure
Answer: Prevent fluid from leaking along the rotating shaft
Rationale: A mechanical seal provides a controlled sealing interface between
the rotating shaft and stationary pump housing.
8. Which type of wrench is generally preferred for tightening a fastener to a
specified torque?
A. Pipe wrench
B. Adjustable wrench
C. Torque wrench
D. Basin wrench
Answer: Torque wrench
, Rationale: A torque wrench allows a fastener to be tightened to the
manufacturer's specified torque, helping prevent under-tightening or damage
from over-tightening.
9. What is the primary purpose of a bearing?
A. Generate electricity
B. Support moving components and reduce friction
C. Increase pipe pressure
D. Remove moisture from air
Answer: Support moving components and reduce friction
Rationale: Bearings support shafts and other moving components while
allowing controlled movement with reduced friction.
10.Excessive vibration in a rotating pump or motor may indicate:
A. Perfect alignment
B. Misalignment, imbalance, or bearing problems
C. Correct lubrication only
D. Normal operation in every case
Answer: Misalignment, imbalance, or bearing problems
Rationale: Excessive vibration is a common symptom of mechanical problems
such as shaft misalignment, rotor imbalance, worn bearings, or looseness.
11.What is the primary purpose of shaft alignment between a motor and
pump?
A. Increase electrical resistance
B. Prevent excessive mechanical stress and vibration
C. Reduce water temperature
D. Increase pipe diameter
Answer: Prevent excessive mechanical stress and vibration
