Stationary Engineer License Exam Prep 2026
Questions and Answers Guide
1. A fuse is necessary for a circuit with a load of A. 100 amps. Note: V = IR
21,000 watts and a voltage of 220 volts. Therefore I = V/R 21,000
A. 100 amps /220 volts = 95 amps
B. 150
C. 175
D. 200
2. At 0 psig, how many BTU's are required to change 1 C. 970 BTU
lb of water at 212F to steam?
A. 144
B. 180
C. 970
D. 1190
3. Radiation is: D. Heat transfer by waves
A. the movement of liquids or gases created by a
temperature difference.
B. Heat transfer by direct molecular contact
C. the weight of a substance compared to unity
D. Heat transfer by waves
4. Sensible heat is: B. Heat quantity that can be
A. An established relationship comparing any sub- felt or measured by a ther-
stance to the heat content of water. mometer
B. Heat quantity that can be felt or measured by a
thermometer
C. Heat quantity above the saturation point
D. Measure of heat intensity
5. All steam lines should be pitched: A. In the direction of flow
A. In the direction of flow
B. Back towards the boiler
, Stationary Engineer License Exam Prep 2026
Questions and Answers Guide
C. Level
D. For convenience
6. Draw a simple picture of a Sterling Boiler. Label it.
7. Describe the water flow through a Sterling Boiler Feedwater flows to 1) rear-
most drum 2) down to the
mud drum 3) up to mid-
dle drum 4) to front drum
through crossover pipes
and 5) back down to mud
drum
8. Draw a picture of a Scotch Boiler. Label the firebox,
combustion chamber, crown sheet, tubes, feed wa-
ter inlet, steam outlet, stack, Economizer and Super-
heater.
9. Draw a picture of a Firetube Boiler. Label it.
10. Draw a picture of a Locomotive Fire Tube Boiler. Label
it.
11. Increasing the pressure will have what effect on the C - higher Boiling Point
boiling point of water?
, A. No change
B. Lower BP
C. Higher BP
D. Temperature will increase 2F for every psi
12. Heat absorbed by water when is changes from liquid B. Latent Heat
to steam at the boiling point is called:
A. Sensible heat
B. Latent heat
C. Specific heat
D. Super heat
13. Heat may be transferred in how many ways? C. 3 ways: conduction, con-
A. 1 vection and radiation
B. 2
C. 3
D. 4
14. A boiler horsepower is defined as: C. evaporation of 34.5 lb of
A. 970.3 BTU water and at 212F per hour
B. Total heating surface times the evaporation factor
C. evaporation of 34.5 lb of water and at 212F per
hour
D. evaporation of 34.5 lb of water from and at 212F
per 8 hours
15. A boiler's steam pressure gauge reads 150 psig. What D. 164.7 psia (150 psig +
is the absolute pressure? 14.7 psi = 164.7 psia)
A. 14.7 psia
B. 135.3 psia
C. 150 psia
D. 164.7 psia
, 16. What does 212F equal on the Celsius scale? B. 100C
A. 32C
B. 100C
C. 180C
D. 970.3C
17. One boiler horsepower is equal to how many BTU's? B. 33,472 BTU
A. 970.3
B. 33,472 BTU
C. 125,000 BTU
D. 288,000 BTU
18. A British Thermal Unit is A. The amount of heat
A. the amount of heat needed to raise 1 lb of water needed to raise 1 lb of wa-
1F ter 1F
B. the amount of heat needed to raise 1 lb of steam
1F
C. A unit of temperature measurement
D. the amount of heat in water between freezing and
boiling
19. Hydronic heat is: B. Hot water heat
A. Steam heat
B. Hot water heat
C. Radiant heat
D. Heat of evaporation
20. Superheated steam is: B. Very hot steam
A. reheated steam
B. very hot steam
C. flash steam
D. saturated steam
Questions and Answers Guide
1. A fuse is necessary for a circuit with a load of A. 100 amps. Note: V = IR
21,000 watts and a voltage of 220 volts. Therefore I = V/R 21,000
A. 100 amps /220 volts = 95 amps
B. 150
C. 175
D. 200
2. At 0 psig, how many BTU's are required to change 1 C. 970 BTU
lb of water at 212F to steam?
A. 144
B. 180
C. 970
D. 1190
3. Radiation is: D. Heat transfer by waves
A. the movement of liquids or gases created by a
temperature difference.
B. Heat transfer by direct molecular contact
C. the weight of a substance compared to unity
D. Heat transfer by waves
4. Sensible heat is: B. Heat quantity that can be
A. An established relationship comparing any sub- felt or measured by a ther-
stance to the heat content of water. mometer
B. Heat quantity that can be felt or measured by a
thermometer
C. Heat quantity above the saturation point
D. Measure of heat intensity
5. All steam lines should be pitched: A. In the direction of flow
A. In the direction of flow
B. Back towards the boiler
, Stationary Engineer License Exam Prep 2026
Questions and Answers Guide
C. Level
D. For convenience
6. Draw a simple picture of a Sterling Boiler. Label it.
7. Describe the water flow through a Sterling Boiler Feedwater flows to 1) rear-
most drum 2) down to the
mud drum 3) up to mid-
dle drum 4) to front drum
through crossover pipes
and 5) back down to mud
drum
8. Draw a picture of a Scotch Boiler. Label the firebox,
combustion chamber, crown sheet, tubes, feed wa-
ter inlet, steam outlet, stack, Economizer and Super-
heater.
9. Draw a picture of a Firetube Boiler. Label it.
10. Draw a picture of a Locomotive Fire Tube Boiler. Label
it.
11. Increasing the pressure will have what effect on the C - higher Boiling Point
boiling point of water?
, A. No change
B. Lower BP
C. Higher BP
D. Temperature will increase 2F for every psi
12. Heat absorbed by water when is changes from liquid B. Latent Heat
to steam at the boiling point is called:
A. Sensible heat
B. Latent heat
C. Specific heat
D. Super heat
13. Heat may be transferred in how many ways? C. 3 ways: conduction, con-
A. 1 vection and radiation
B. 2
C. 3
D. 4
14. A boiler horsepower is defined as: C. evaporation of 34.5 lb of
A. 970.3 BTU water and at 212F per hour
B. Total heating surface times the evaporation factor
C. evaporation of 34.5 lb of water and at 212F per
hour
D. evaporation of 34.5 lb of water from and at 212F
per 8 hours
15. A boiler's steam pressure gauge reads 150 psig. What D. 164.7 psia (150 psig +
is the absolute pressure? 14.7 psi = 164.7 psia)
A. 14.7 psia
B. 135.3 psia
C. 150 psia
D. 164.7 psia
, 16. What does 212F equal on the Celsius scale? B. 100C
A. 32C
B. 100C
C. 180C
D. 970.3C
17. One boiler horsepower is equal to how many BTU's? B. 33,472 BTU
A. 970.3
B. 33,472 BTU
C. 125,000 BTU
D. 288,000 BTU
18. A British Thermal Unit is A. The amount of heat
A. the amount of heat needed to raise 1 lb of water needed to raise 1 lb of wa-
1F ter 1F
B. the amount of heat needed to raise 1 lb of steam
1F
C. A unit of temperature measurement
D. the amount of heat in water between freezing and
boiling
19. Hydronic heat is: B. Hot water heat
A. Steam heat
B. Hot water heat
C. Radiant heat
D. Heat of evaporation
20. Superheated steam is: B. Very hot steam
A. reheated steam
B. very hot steam
C. flash steam
D. saturated steam
