MARYLAND STATIONARY ENGINEER GRADE 2 EXAM –
350 PRACTICE QUESTIONS WITH ANSWERS &
RATIONALES
SECTION 1: LICENSING & MARYLAND REGULATIONS (Questions 1–35)
Question 1
A facility has two boilers rated at 150 HP and 200 HP. What is the total
horsepower, and what license grade is required to act as the shift engineer?
A) 350 HP, Grade 3
B) 350 HP, Grade 2
C) 500 HP, Grade 1
D) 500 HP, Grade 2
Correct Answer: B
Rationale: The total connected horsepower is 350 HP (150 + 200). In Maryland, a
Grade 2 license allows an engineer to oversee a plant with a total capacity of 300
to 499 HP. Grade 1 is required for 500 HP and above.
---
Question 2
What is the maximum horsepower (HP) limit for a Maryland Grade 2 Stationary
Engineer?
,A) 100 HP
B) 300 HP
C) 500 HP
D) Unlimited
Correct Answer: C
Rationale: The Grade 2 license is the mid-tier certification in Maryland,
authorizing the supervision of plants up to 500 HP. Equipment exceeding 500 HP
requires a Grade 1 license.
---
Question 3
According to Maryland law, what defines a "High Pressure" steam boiler?
A) Operating at or above 100 psi
B) Operating at a pressure exceeding 15 psi
C) Operating at 300 HP or more
D) Any boiler with a water volume exceeding 100 gallons
Correct Answer: B
Rationale: Maryland law defines a high-pressure steam boiler as any boiler
operating at a pressure of more than 15 pounds per square inch (psi). Low-
pressure boilers operate at or below 15 psi.
---
,Question 4
Which qualification meets the experience requirement to take the Grade 2
examination?
A) 12 months as a Grade 3 engineer
B) 24 months as a Grade 4 engineer and a master HVAC license
C) 36 months as a Grade 3 engineer under a Grade 2 or 1
D) An associate degree in thermodynamics
Correct Answer: C
Rationale: The Maryland Board requires 36 months of documented experience as
an active Grade 3 engineer under the supervision of a licensed Grade 2 or Grade 1
engineer.
---
Question 5
What is the minimum passing score required on the Maryland Grade 2 Stationary
Engineer examination?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: According to PSI Examination Services, which administers the test,
candidates must achieve a minimum passing score of 70% on the examination.
, ---
Question 6
Who administers the stationary engineer licensing examinations for the State of
Maryland?
A) The Maryland Department of Labor directly
B) The local county fire marshal
C) PSI Examination Services
D) The National Board of Boiler and Pressure Vessel Inspectors
Correct Answer: C
Rationale: PSI Examination Services provides testing for all five grades of licensing
at test centers located throughout Maryland. Applicants must first apply to PSI to
sit for the examination.
---
Question 7
A Grade 2 engineer must have held a lower-grade license for a minimum period
of:
A) No minimum requirement
B) 6 months
C) 12 months
D) 36 months
350 PRACTICE QUESTIONS WITH ANSWERS &
RATIONALES
SECTION 1: LICENSING & MARYLAND REGULATIONS (Questions 1–35)
Question 1
A facility has two boilers rated at 150 HP and 200 HP. What is the total
horsepower, and what license grade is required to act as the shift engineer?
A) 350 HP, Grade 3
B) 350 HP, Grade 2
C) 500 HP, Grade 1
D) 500 HP, Grade 2
Correct Answer: B
Rationale: The total connected horsepower is 350 HP (150 + 200). In Maryland, a
Grade 2 license allows an engineer to oversee a plant with a total capacity of 300
to 499 HP. Grade 1 is required for 500 HP and above.
---
Question 2
What is the maximum horsepower (HP) limit for a Maryland Grade 2 Stationary
Engineer?
,A) 100 HP
B) 300 HP
C) 500 HP
D) Unlimited
Correct Answer: C
Rationale: The Grade 2 license is the mid-tier certification in Maryland,
authorizing the supervision of plants up to 500 HP. Equipment exceeding 500 HP
requires a Grade 1 license.
---
Question 3
According to Maryland law, what defines a "High Pressure" steam boiler?
A) Operating at or above 100 psi
B) Operating at a pressure exceeding 15 psi
C) Operating at 300 HP or more
D) Any boiler with a water volume exceeding 100 gallons
Correct Answer: B
Rationale: Maryland law defines a high-pressure steam boiler as any boiler
operating at a pressure of more than 15 pounds per square inch (psi). Low-
pressure boilers operate at or below 15 psi.
---
,Question 4
Which qualification meets the experience requirement to take the Grade 2
examination?
A) 12 months as a Grade 3 engineer
B) 24 months as a Grade 4 engineer and a master HVAC license
C) 36 months as a Grade 3 engineer under a Grade 2 or 1
D) An associate degree in thermodynamics
Correct Answer: C
Rationale: The Maryland Board requires 36 months of documented experience as
an active Grade 3 engineer under the supervision of a licensed Grade 2 or Grade 1
engineer.
---
Question 5
What is the minimum passing score required on the Maryland Grade 2 Stationary
Engineer examination?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: According to PSI Examination Services, which administers the test,
candidates must achieve a minimum passing score of 70% on the examination.
, ---
Question 6
Who administers the stationary engineer licensing examinations for the State of
Maryland?
A) The Maryland Department of Labor directly
B) The local county fire marshal
C) PSI Examination Services
D) The National Board of Boiler and Pressure Vessel Inspectors
Correct Answer: C
Rationale: PSI Examination Services provides testing for all five grades of licensing
at test centers located throughout Maryland. Applicants must first apply to PSI to
sit for the examination.
---
Question 7
A Grade 2 engineer must have held a lower-grade license for a minimum period
of:
A) No minimum requirement
B) 6 months
C) 12 months
D) 36 months
