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Examoogle • User • info@examoogle.com • EE-2024-8821
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Advantages of preventive maintenance
Damage is prevented
Repairs decreases
Production become uniform
All of these
All of these
Quick Summary: Preventive maintenance is a scheduled maintenance strategy designed to perform inspections, adjustments, and repairs on equipment before a failure occurs. By proactively managing the health of electrical and mechanical systems, it minimizes unplanned downtime and extends the operational life of the assets.
Preventive maintenance is a scheduled maintenance strategy designed to perform inspections, adjustments, and repairs on equipment before a failure occurs. By proactively managing the health of electrical and mechanical systems, it minimizes unplanned downtime and extends the operational life of the assets.
MTBF=Number of FailuresTotal Uptime — Mean Time Between Failures, which increases with effective preventive maintenance
Availability=MTBF+MTTRMTBF — Probability that a system is operational when required
The principle relies on the P−F (Potential to Functional) interval, where maintenance is performed during the 'Potential Failure' stage. By detecting degradation through predictive checks (like insulation resistance tests or thermography) and routine servicing, the probability of catastrophic failure is significantly reduced.
Reduces the risk of unplanned outages in power systems.
Ensures equipment operates within specified efficiency parameters.
Optimizes resource allocation by replacing parts based on age or condition rather than waiting for failure.
Enhances workplace safety by identifying hazardous insulation degradation early.
Significant reduction in unplanned production downtime.
Extension of the useful life cycle of capital equipment.
Lower long-term maintenance costs compared to reactive (breakdown) maintenance.
Requires initial investment in planning and scheduling software.
Risk of 'over-maintenance' where parts are replaced before their useful life has ended.
Requires skilled personnel for periodic inspection.
Transformer oil testing and winding insulation monitoring.
Circuit breaker contact inspections and lubrication.
Motor bearing analysis and lubrication schedules.
Preventive maintenance effectively transforms the maintenance model from 'Corrective' (reactive) to 'Proactive' (planned).
Options A, B, and C are all classic benefits of a well-implemented preventive strategy, making 'All of these' the only comprehensive choice.
D is correct — Preventive maintenance directly reduces equipment failure (damage), minimizes costly breakdown repairs, and maintains steady production output.
In competitive exams, always look for 'All of these' when all listed advantages are logical outcomes of the system being described; preventive maintenance is fundamentally about minimizing unpredictability.