Power Engineering - 4B3 Practice
Questions And Answers
The bottom of the gauge glass for a firetube boiler must be:
a. 76 mm above the highest firetube
b. Level with the normal water level
c. 25 mm above the lowest firetube
d. Level with the highest firetube
e. 25 mm below the highest firetube -
correct answer ✅a. 76 mm above the highest firetube
A disadvantage of a gauge glass safety shutoff valve is:
a. It cannot withstand high pressure
b. The glass cannot be blown down
c. Loss of water is not prevented
d. It requires more maintenance
e. It makes the gauge glass replacement more difficult -
correct answer ✅d. It requires more maintenance
Flat gauge glasses are lined with mica to:
,Power Engineering - 4B3 Practice
Questions And Answers
a. Cool the glass
b. Make the level easier to see
c. Prevent erosion of the glass
d. Provide a high temperature seal
e. Increase the strength of the glass -
correct answer ✅c. Prevent erosion of the glass
In which ASME part it says that all steam boilers with fixed water
level shall have at least one gauge glass to show the water level?
a. ASME VII BPVC, Part C2.423
b. ASME I BPVC, Part PG-60.1
c. ASME IV, Part HG-606
d. ASME CSD-1, Part CW-130
e. ASME IV BPVC, Part HG-603 -
correct answer ✅b. ASME I BPVC, Part PG-60.1
Dirt traps are installed on an Igema remote water level indicator:
a. To prevent osmosis from occurring
,Power Engineering - 4B3 Practice
Questions And Answers
b. Because of the high amount of suspended solids collecting in the
constant head
c. So that overfilling of the indicating section is prevented
d. To prevent contamination of the indicating liquid
e. To prevent mixing of the indicating liquid with the boiler water -
correct answer ✅d. To prevent contamination of the indicating
liquid
ASME section VII says that each automatically fired boiler is
required to have two independent low water cut-offs.
a. True
b. False -
correct answer ✅b. False
A great advantage of an Igema level indicator over a Hopkinson unit
is:
a. There are no moving parts
b. Its ability to show steam and water as different colors
c. That it has the highest degree of accuracy
d. That it is the least costly to purchase
, Power Engineering - 4B3 Practice
Questions And Answers
e. It requires no electricity -
correct answer ✅a. There are no moving parts
Two types of indirect level indicators are the:
a. Hopkinson and Igema
b. Igema and Ledoux
c. Bicolor and multi-tube
d. Bicolor and reflex
e. Ledoux and multi-tube -
correct answer ✅a. Hopkinson and Igema
When a firetube boiler is filled for the first time, it should be
confirmed that when the water first appears in the gauge glass, that
there is __________ mm of water over the top of the tubes.
a. 25.4
b. 50.8
c. 101.6
d. 76
Questions And Answers
The bottom of the gauge glass for a firetube boiler must be:
a. 76 mm above the highest firetube
b. Level with the normal water level
c. 25 mm above the lowest firetube
d. Level with the highest firetube
e. 25 mm below the highest firetube -
correct answer ✅a. 76 mm above the highest firetube
A disadvantage of a gauge glass safety shutoff valve is:
a. It cannot withstand high pressure
b. The glass cannot be blown down
c. Loss of water is not prevented
d. It requires more maintenance
e. It makes the gauge glass replacement more difficult -
correct answer ✅d. It requires more maintenance
Flat gauge glasses are lined with mica to:
,Power Engineering - 4B3 Practice
Questions And Answers
a. Cool the glass
b. Make the level easier to see
c. Prevent erosion of the glass
d. Provide a high temperature seal
e. Increase the strength of the glass -
correct answer ✅c. Prevent erosion of the glass
In which ASME part it says that all steam boilers with fixed water
level shall have at least one gauge glass to show the water level?
a. ASME VII BPVC, Part C2.423
b. ASME I BPVC, Part PG-60.1
c. ASME IV, Part HG-606
d. ASME CSD-1, Part CW-130
e. ASME IV BPVC, Part HG-603 -
correct answer ✅b. ASME I BPVC, Part PG-60.1
Dirt traps are installed on an Igema remote water level indicator:
a. To prevent osmosis from occurring
,Power Engineering - 4B3 Practice
Questions And Answers
b. Because of the high amount of suspended solids collecting in the
constant head
c. So that overfilling of the indicating section is prevented
d. To prevent contamination of the indicating liquid
e. To prevent mixing of the indicating liquid with the boiler water -
correct answer ✅d. To prevent contamination of the indicating
liquid
ASME section VII says that each automatically fired boiler is
required to have two independent low water cut-offs.
a. True
b. False -
correct answer ✅b. False
A great advantage of an Igema level indicator over a Hopkinson unit
is:
a. There are no moving parts
b. Its ability to show steam and water as different colors
c. That it has the highest degree of accuracy
d. That it is the least costly to purchase
, Power Engineering - 4B3 Practice
Questions And Answers
e. It requires no electricity -
correct answer ✅a. There are no moving parts
Two types of indirect level indicators are the:
a. Hopkinson and Igema
b. Igema and Ledoux
c. Bicolor and multi-tube
d. Bicolor and reflex
e. Ledoux and multi-tube -
correct answer ✅a. Hopkinson and Igema
When a firetube boiler is filled for the first time, it should be
confirmed that when the water first appears in the gauge glass, that
there is __________ mm of water over the top of the tubes.
a. 25.4
b. 50.8
c. 101.6
d. 76
