AK Industrial Maintenance Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
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1. What is the primary purpose of a preventive maintenance
program in an industrial facility?
a. To eliminate all equipment failures
b. To increase emergency repairs
c. To perform maintenance based on planned intervals or
conditions
d. To replace every component annually
Answer: c. To perform maintenance based on planned intervals or
conditions
Rationale: Preventive maintenance is scheduled according to time,
usage, operating conditions, or manufacturer recommendations. Its
purpose is to reduce the likelihood of unexpected failures, improve
,reliability, and extend equipment service life. It cannot guarantee that
failures will never occur.
2. Which maintenance strategy relies on monitoring equipment
condition to determine when maintenance should be performed?
a. Corrective maintenance
b. Predictive maintenance
c. Run-to-failure maintenance
d. Breakdown maintenance
Answer: b. Predictive maintenance
Rationale: Predictive maintenance uses measurable indicators such as
vibration, temperature, oil condition, or electrical characteristics to
assess equipment health. Maintenance is scheduled when the data
indicates deterioration rather than simply following a fixed calendar
interval.
3. Before servicing an electrically powered industrial machine, what
is the most important initial safety action?
a. Increase the motor speed
b. Remove the machine guards
c. Identify and isolate all hazardous energy sources
d. Lubricate the bearings
Answer: c. Identify and isolate all hazardous energy sources
,Rationale: Industrial machines may contain electrical, mechanical,
hydraulic, pneumatic, thermal, or other stored energy. Proper energy
identification and isolation must occur before servicing so that
unexpected startup or energy release does not injure workers.
4. What is the primary purpose of lockout/tagout procedures?
a. To improve production speed
b. To prevent unexpected energization or startup
c. To reduce lubrication requirements
d. To eliminate equipment inspections
Answer: b. To prevent unexpected energization or startup
Rationale: Lockout/tagout procedures control hazardous energy during
servicing and maintenance. A properly applied lock and tag help ensure
that equipment cannot be inadvertently energized or started while
employees are exposed to hazardous conditions.
5. Which instrument is commonly used to measure electrical
resistance?
a. Tachometer
b. Manometer
c. Ohmmeter
d. Pyrometer
Answer: c. Ohmmeter
, Rationale: An ohmmeter measures resistance in ohms. Resistance
measurements are useful for checking conductors, heating elements,
coils, and other electrical components. The circuit should normally be
de-energized before resistance is measured.
6. What is the main purpose of a machine's bearing lubrication
system?
a. To increase friction
b. To reduce friction and wear
c. To increase electrical resistance
d. To eliminate alignment requirements
Answer: b. To reduce friction and wear
Rationale: Proper lubrication creates a film between moving surfaces,
reducing direct metal-to-metal contact. It also helps control heat,
minimize wear, and protect bearing surfaces from corrosion and
contamination.
7. Which symptom commonly indicates that a rotating machine may
be out of balance?
a. Excessive vibration
b. Reduced ambient humidity
c. Increased pipe insulation
d. Low hydraulic pressure only
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
Download Pdf
1. What is the primary purpose of a preventive maintenance
program in an industrial facility?
a. To eliminate all equipment failures
b. To increase emergency repairs
c. To perform maintenance based on planned intervals or
conditions
d. To replace every component annually
Answer: c. To perform maintenance based on planned intervals or
conditions
Rationale: Preventive maintenance is scheduled according to time,
usage, operating conditions, or manufacturer recommendations. Its
purpose is to reduce the likelihood of unexpected failures, improve
,reliability, and extend equipment service life. It cannot guarantee that
failures will never occur.
2. Which maintenance strategy relies on monitoring equipment
condition to determine when maintenance should be performed?
a. Corrective maintenance
b. Predictive maintenance
c. Run-to-failure maintenance
d. Breakdown maintenance
Answer: b. Predictive maintenance
Rationale: Predictive maintenance uses measurable indicators such as
vibration, temperature, oil condition, or electrical characteristics to
assess equipment health. Maintenance is scheduled when the data
indicates deterioration rather than simply following a fixed calendar
interval.
3. Before servicing an electrically powered industrial machine, what
is the most important initial safety action?
a. Increase the motor speed
b. Remove the machine guards
c. Identify and isolate all hazardous energy sources
d. Lubricate the bearings
Answer: c. Identify and isolate all hazardous energy sources
,Rationale: Industrial machines may contain electrical, mechanical,
hydraulic, pneumatic, thermal, or other stored energy. Proper energy
identification and isolation must occur before servicing so that
unexpected startup or energy release does not injure workers.
4. What is the primary purpose of lockout/tagout procedures?
a. To improve production speed
b. To prevent unexpected energization or startup
c. To reduce lubrication requirements
d. To eliminate equipment inspections
Answer: b. To prevent unexpected energization or startup
Rationale: Lockout/tagout procedures control hazardous energy during
servicing and maintenance. A properly applied lock and tag help ensure
that equipment cannot be inadvertently energized or started while
employees are exposed to hazardous conditions.
5. Which instrument is commonly used to measure electrical
resistance?
a. Tachometer
b. Manometer
c. Ohmmeter
d. Pyrometer
Answer: c. Ohmmeter
, Rationale: An ohmmeter measures resistance in ohms. Resistance
measurements are useful for checking conductors, heating elements,
coils, and other electrical components. The circuit should normally be
de-energized before resistance is measured.
6. What is the main purpose of a machine's bearing lubrication
system?
a. To increase friction
b. To reduce friction and wear
c. To increase electrical resistance
d. To eliminate alignment requirements
Answer: b. To reduce friction and wear
Rationale: Proper lubrication creates a film between moving surfaces,
reducing direct metal-to-metal contact. It also helps control heat,
minimize wear, and protect bearing surfaces from corrosion and
contamination.
7. Which symptom commonly indicates that a rotating machine may
be out of balance?
a. Excessive vibration
b. Reduced ambient humidity
c. Increased pipe insulation
d. Low hydraulic pressure only
