Power Engineering 3B1 Chapter 9
Questions with Complete Solutions
(Latest 2025)
All new boilers, and boilers which have been repaired on their
pressure parts, require a ___________ to be performed upon
them.
a. acidizing
b. de-scaling
c. hydrostatic test
d. refractory dry out
e. soot blowing - Correct Answers ✅c
On small boilers, a hydrostatic test is done with:
a. compressed nitrogen
b. water pressure
c. steam pressure
d. compressed air
e. acetic acid - Correct Answers ✅b
When a hydrostatic pressure test is done on a boiler, the
pressure shall be under control at all times, so that the
required test pressure is never exceeded by more than:
a. 10%
b. 6%
c. 5%
d. 4%
,Power Engineering 3B1 Chapter 9
Questions with Complete Solutions
(Latest 2025)
e. 0% - Correct Answers ✅c
All traces of oil or grease must be removed from a boiler by
boiling out with.
a. a suitable acid
b. hot water
c. a suitable alkali
d. a suitable solvent
e. sodium sulphite and hydrazine - Correct Answers ✅c
After construction of the boiler setting, the refractories will
contain a considerable amount of moisture. Referring to this
situation, which of the following statements are correct?
1. The refractories should be dried out as fast as possible
2. The refractories should be dried slowly
3. If the refractories are dried too slowly, large cracks will
appear
4. If the refractories are dried too quickly, the refractories will
crack
a. 1,3
b. 2,4
c. 1
d. 2
, Power Engineering 3B1 Chapter 9
Questions with Complete Solutions
(Latest 2025)
e. 3 - Correct Answers ✅b
An alkaline boil out is used on a boiler:
a. When the boiler has had oil contamination
b. Before overhauls
c. After an acid clean
d. Before returning the boiler to service after an overhaul
e. after an acid clean - Correct Answers ✅a
_____ storage is preferable for boilers that are out of service
for an extended period of time or in locations where freezing
temperatures.
a. Dry
b. Short
c. Wet
d. Long - Correct Answers ✅a
Moisture absorbing material should be placed on trays inside
the drums to absorb moisture from the _____.
a. metal
b. tubes
c. air
d. fuel - Correct Answers ✅c
Questions with Complete Solutions
(Latest 2025)
All new boilers, and boilers which have been repaired on their
pressure parts, require a ___________ to be performed upon
them.
a. acidizing
b. de-scaling
c. hydrostatic test
d. refractory dry out
e. soot blowing - Correct Answers ✅c
On small boilers, a hydrostatic test is done with:
a. compressed nitrogen
b. water pressure
c. steam pressure
d. compressed air
e. acetic acid - Correct Answers ✅b
When a hydrostatic pressure test is done on a boiler, the
pressure shall be under control at all times, so that the
required test pressure is never exceeded by more than:
a. 10%
b. 6%
c. 5%
d. 4%
,Power Engineering 3B1 Chapter 9
Questions with Complete Solutions
(Latest 2025)
e. 0% - Correct Answers ✅c
All traces of oil or grease must be removed from a boiler by
boiling out with.
a. a suitable acid
b. hot water
c. a suitable alkali
d. a suitable solvent
e. sodium sulphite and hydrazine - Correct Answers ✅c
After construction of the boiler setting, the refractories will
contain a considerable amount of moisture. Referring to this
situation, which of the following statements are correct?
1. The refractories should be dried out as fast as possible
2. The refractories should be dried slowly
3. If the refractories are dried too slowly, large cracks will
appear
4. If the refractories are dried too quickly, the refractories will
crack
a. 1,3
b. 2,4
c. 1
d. 2
, Power Engineering 3B1 Chapter 9
Questions with Complete Solutions
(Latest 2025)
e. 3 - Correct Answers ✅b
An alkaline boil out is used on a boiler:
a. When the boiler has had oil contamination
b. Before overhauls
c. After an acid clean
d. Before returning the boiler to service after an overhaul
e. after an acid clean - Correct Answers ✅a
_____ storage is preferable for boilers that are out of service
for an extended period of time or in locations where freezing
temperatures.
a. Dry
b. Short
c. Wet
d. Long - Correct Answers ✅a
Moisture absorbing material should be placed on trays inside
the drums to absorb moisture from the _____.
a. metal
b. tubes
c. air
d. fuel - Correct Answers ✅c
