Boiler Licensing Exam Study Guide 2025/ 2026 with Practice Questions and Solutions

Terms in this set (99)


B. Mixture, atomization, time, temperature

1. ______ are necessary for complete
combustion.
A. Forced draft, air, time, and temperature
B. Mixture, atomization, time, and
temperature
C. Time, temperature, and draft
D. Heat, draft, and turbulence



D. 94.7

2. If a steam pressure gauge indicates 80
psig, the absolute pressure is _____ psia.
A. 14.7
B. 65.3
C. 80.0
D. 94.7



B 7.0
3. A neutral solution is _____ on the pH
scale.
A.0.0
B. 7.0
C.8.3
D. 11.0

, B. Ringelmann
4. A (n) _____ test is used to determine
smoke density
A. pH
B. Ringelmann
C. MATT
D. Orsat


A. Siphon
5. A steam pressure gauge has a _____
between the boiler and the pressure gauge
to protect the gauge.
A.siphon
B. Strainer
C. Water column
D. Vent


C. Manometer
6. Draft is measured with a _____.
A. Bourdon Tube
B. Hydrometer
C. Manometer
D. Viscometer


B. Sinks
7. IN an inverted bucket steam trap, the
bucket _____ as the trap fills with
condensate.
A. Rotates
B. Sinks
C. Rises
D. Tilts

, A. Warn of a corroded stay

8. A hole is drilled in the end of a stay
bolt to _____.
A. Warn of a corroded stay
B. Increase strength
C. Allow for expansion and contraction
D. Increase Corrosion resistance



D. Rank
9. When coal is classified, _____ refers to
hardness.
A. Volatiles
B. Clinker
C. Grade
D. Rank


C. Too much excess air

10. A higher than normal oxygen (o2)
reading in the gases of combustion may
result from _____.
A. Complete combustion
B. Stoichiometric
C. Too much excess air
D. Poor electrostatic precipitator
operation