Power Engineering 4th Class - B5
Exam 2025 Questions and Answers
Lock washers:
a. Prevent the equipment from being dismantled
b. Reduce the chances of unwanted turning of the bolt or nut
c. Distribute the lock nut force
d. Prevent marring of the work surface - CORRECT ANSWER✔️✔️-b
When a boiler is removed from service, it can be drained once the temperature reaches
approximately:
a. room temperature
b. 50°C
c. 90°C
d. 70°C - CORRECT ANSWER✔️✔️-c
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,When storing a hacksaw:
a. flip the blade, so that the cutting surfaces are not exposed to damage
b. release the tension on the blade
c. the saw should be stored in a protective sheath
d. the blade should be removed - CORRECT ANSWER✔️✔️-b
What factor of safety should be used to determine the safe load for a new fibre rope?
a. two
b. the safe load for fibre rope cannot be calculated
c. five
d. 1 - CORRECT ANSWER✔️✔️-c
During a wet layup, a water tank should be installed above the boiler and attached to the boiler vent
connection in order to:
a. Permit the injection of boiler chemicals.
b. Prevent air from entering the boiler water.
c. Keep the nitrogen cap from venting to the atmosphere
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
, d. Provide pure water for rinsing the exterior of the boiler. - CORRECT ANSWER✔️✔️-b
A dressing tool is used to:
a. Fit a new handle into a hammer head
b. Clean the grooves of a file
c. Clean the measuring contact surfaces of a micrometer
d. Square the edges of a grinding wheel - CORRECT ANSWER✔️✔️-d
Stove bolt nuts can be:
a. Known as castle nuts
b. Self locking
c. Tapered threads
d. Square or hexagonal - CORRECT ANSWER✔️✔️-d
Air removal prior to a hydrostatic test
a. Is critical, because the air will compress during the test
b. Will prevent oxygen corrosion.
c. Is done by adding oxygen scavenging chemicals to the test water.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
Exam 2025 Questions and Answers
Lock washers:
a. Prevent the equipment from being dismantled
b. Reduce the chances of unwanted turning of the bolt or nut
c. Distribute the lock nut force
d. Prevent marring of the work surface - CORRECT ANSWER✔️✔️-b
When a boiler is removed from service, it can be drained once the temperature reaches
approximately:
a. room temperature
b. 50°C
c. 90°C
d. 70°C - CORRECT ANSWER✔️✔️-c
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,When storing a hacksaw:
a. flip the blade, so that the cutting surfaces are not exposed to damage
b. release the tension on the blade
c. the saw should be stored in a protective sheath
d. the blade should be removed - CORRECT ANSWER✔️✔️-b
What factor of safety should be used to determine the safe load for a new fibre rope?
a. two
b. the safe load for fibre rope cannot be calculated
c. five
d. 1 - CORRECT ANSWER✔️✔️-c
During a wet layup, a water tank should be installed above the boiler and attached to the boiler vent
connection in order to:
a. Permit the injection of boiler chemicals.
b. Prevent air from entering the boiler water.
c. Keep the nitrogen cap from venting to the atmosphere
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
, d. Provide pure water for rinsing the exterior of the boiler. - CORRECT ANSWER✔️✔️-b
A dressing tool is used to:
a. Fit a new handle into a hammer head
b. Clean the grooves of a file
c. Clean the measuring contact surfaces of a micrometer
d. Square the edges of a grinding wheel - CORRECT ANSWER✔️✔️-d
Stove bolt nuts can be:
a. Known as castle nuts
b. Self locking
c. Tapered threads
d. Square or hexagonal - CORRECT ANSWER✔️✔️-d
Air removal prior to a hydrostatic test
a. Is critical, because the air will compress during the test
b. Will prevent oxygen corrosion.
c. Is done by adding oxygen scavenging chemicals to the test water.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
