ABSA B1 STUDY BANK BRAND
NEW OFFICIAL QUESTIONS WITH
ANSWERS.
Why do boilers have allowances for expansion?
1) To prevent the brickwork from cracking
2) To prevent undue stress on the pipe work
3) To prevent thermal shock to the steam drum
4) Because the boiler is not always operating at the same
temperature
a. 1, 2, 4
b. 2, 3, 4
c. 1, 2
d. 2, 4
e. 2, 3 - correct answer -A
The boiler pressure parts are allowed to expand __________
from the main supports at the top.
a. up wards
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b. sideways
c. downwards
d. static - correct answer -C
Upon completion of the structural steel installation, the "U" sheet
hangers are attached to the structural steel for support of the
main steam__________
A Header
B Drum
C Superheater
D Economizer - correct answer -B
The drum is supported by U-bolts, which permit linear movement
of the drum with ___________ variations.
a. temperature
b. size
c. pressure
d. small - correct answer -A
The drum is used as the _________ anchor point for other boiler
components, and for this reason, accurate location is important.
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a. minor
b. minimum
c. maximum
d. major - correct answer -D
The bottom-supported boiler has concrete drum _________,
which support the bottom drum and bottom headers.
a. hangers
b. holders
c. foundations
d. feet - correct answer -C
The boiler tubes themselves are used to support the top _____ in
a bottom-supported boiler.
a. cover
b. drum
c. header
d. tubes - correct answer -B
All piping and ductwork must have provision for _______
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a. expansion
b. installation
c. vibration
d. shrinkage - correct answer -A
Boiler ______ is the term used to describe the airtight metal
casing of a boiler wall.
a. wall
b. metal
c. casing
d. house - correct answer -C
____________ is cement like. It is used to withstand very high
temperatures in areas such as burner throats and boiler target
walls
A Refractory
B Insulation
C Vibration
D Shrinkage - correct answer -A