Page |1
NJ Black Seal Low Pressure, 1 of 3
Questions and Correct Answers/ Latest
Update / Already Graded
The basic function of an automatic feedwater regulator on a boiler is
to:
Ans: maintain proper water level
If a one square inch column of water is one foot tall, how much does it
weigh?
Ans: .433 lbs
Where is the flame sensing device located on a boiler?
Ans: front
Cracking of the boiler metal can be caused by:
Ans: caustic embrittlement
How would you test the operation of the flame failure device?
Ans: by shutting off the fuel supply valve
All rights reserved © 2025/ 2026 |
, Page |2
Where are the combustible gases located in a water tube boiler?
Ans: flowing around the tubes
What are you preventing by increasing the pressure within a cold boiler
gradually?
Ans: thermal shock
When performing a hydrostatic test, the pressure on the boiler should
not exceed:
Ans: 10 psi above 1.5 times the MAWP
A boiler operator log must be maintained in a boiler room containing
over:
Ans: 100 horsepower
If a flame sensing device notices that there is a flame failure, what
device does it secure?
Ans: fuel solenoid valve
What type of draft has a fan between the boiler and the chimney?
All rights reserved © 2025/ 2026 |
NJ Black Seal Low Pressure, 1 of 3
Questions and Correct Answers/ Latest
Update / Already Graded
The basic function of an automatic feedwater regulator on a boiler is
to:
Ans: maintain proper water level
If a one square inch column of water is one foot tall, how much does it
weigh?
Ans: .433 lbs
Where is the flame sensing device located on a boiler?
Ans: front
Cracking of the boiler metal can be caused by:
Ans: caustic embrittlement
How would you test the operation of the flame failure device?
Ans: by shutting off the fuel supply valve
All rights reserved © 2025/ 2026 |
, Page |2
Where are the combustible gases located in a water tube boiler?
Ans: flowing around the tubes
What are you preventing by increasing the pressure within a cold boiler
gradually?
Ans: thermal shock
When performing a hydrostatic test, the pressure on the boiler should
not exceed:
Ans: 10 psi above 1.5 times the MAWP
A boiler operator log must be maintained in a boiler room containing
over:
Ans: 100 horsepower
If a flame sensing device notices that there is a flame failure, what
device does it secure?
Ans: fuel solenoid valve
What type of draft has a fan between the boiler and the chimney?
All rights reserved © 2025/ 2026 |
