1|Page
NJ Black Seal Exam Preparation Version 3 Newest
Verified Exam With Complete Questions And Correct
Detailed Answers| Newest Exam!!!
Which temperature scale is used by the majority of the
world? - Answers-Celcius
How often, by law, must a boiler be inspected? - Answers-
Annually
A change in temperature is an example of: - Answers-
Sensible heat
How many BTU's does it take to change one pound of
water into one pound of steam? - Answers-970.3
What type of heat is a larger exchange of BTU's? -
Answers-Latent Heat
What is the most common fuel oil used in boilers? -
Answers-#2
,2|Page
What are the 4 fundamentals of combustion? - Answers-
Mixture, Atomization, Time, Temperature
What PH level is ideal in boiler operation? - Answers-10-
11.5
Visible black smoke coming from the boiler stack would
most likely be an indication of: - Answers-A lack of air in
the combustion process
Which type of valve allows the flow of feedwater in one
direction only? - Answers-Check Valve
Which two minerals contribute to scale? - Answers-
Calcium and Magnesium
What device is used to measure draft? - Answers-
Manometer
What is the purpose of a safety valve? - Answers-Prevent
overpressure of the boiler
, 3|Page
What type of draft fan would be located in between the
chimney and the boiler furnace? - Answers-Induced Draft
Fan
What valve is allowed between the safety valve and the
boiler? - Answers-No Valve Ever
What are the four main systems of a steam boiler? -
Answers-Fuel, Draft, Feedwater, and Steam
What is the first thing an operator should do when entering
a steam boiler room? - Answers-Check the water level of
the boiler(s)
Describe the design of a firetube boiler - Answers-Fire
inside the tubes, surrounded by water
What is the primary purpose of Low Water Fuel Cut-Off
(LWCO)? - Answers-Shut off the fuel supply to the boiler in
the event of low water
How often should the low water cut-off be tested? -
Answers-Once per day by law. Once per shift is best
practice.
NJ Black Seal Exam Preparation Version 3 Newest
Verified Exam With Complete Questions And Correct
Detailed Answers| Newest Exam!!!
Which temperature scale is used by the majority of the
world? - Answers-Celcius
How often, by law, must a boiler be inspected? - Answers-
Annually
A change in temperature is an example of: - Answers-
Sensible heat
How many BTU's does it take to change one pound of
water into one pound of steam? - Answers-970.3
What type of heat is a larger exchange of BTU's? -
Answers-Latent Heat
What is the most common fuel oil used in boilers? -
Answers-#2
,2|Page
What are the 4 fundamentals of combustion? - Answers-
Mixture, Atomization, Time, Temperature
What PH level is ideal in boiler operation? - Answers-10-
11.5
Visible black smoke coming from the boiler stack would
most likely be an indication of: - Answers-A lack of air in
the combustion process
Which type of valve allows the flow of feedwater in one
direction only? - Answers-Check Valve
Which two minerals contribute to scale? - Answers-
Calcium and Magnesium
What device is used to measure draft? - Answers-
Manometer
What is the purpose of a safety valve? - Answers-Prevent
overpressure of the boiler
, 3|Page
What type of draft fan would be located in between the
chimney and the boiler furnace? - Answers-Induced Draft
Fan
What valve is allowed between the safety valve and the
boiler? - Answers-No Valve Ever
What are the four main systems of a steam boiler? -
Answers-Fuel, Draft, Feedwater, and Steam
What is the first thing an operator should do when entering
a steam boiler room? - Answers-Check the water level of
the boiler(s)
Describe the design of a firetube boiler - Answers-Fire
inside the tubes, surrounded by water
What is the primary purpose of Low Water Fuel Cut-Off
(LWCO)? - Answers-Shut off the fuel supply to the boiler in
the event of low water
How often should the low water cut-off be tested? -
Answers-Once per day by law. Once per shift is best
practice.
