Walmart Maintenance Assessment Question and Answers 2 — Questions and Answers
Question 1: A conveyor belt in the distribution area is making a grinding noise and moving slower than normal. What is the most likely cause?
- The belt needs to be replaced entirely
- A bearing is worn or lacking lubrication (Correct answer)
- The motor is oversized for the belt
- The belt tension is too high
Correct answer: A bearing is worn or lacking lubrication
Grinding noise with reduced speed typically indicates worn or dry bearings that need lubrication or replacement.
Bearings are critical components in conveyor systems that allow smooth rotation. When they wear or lose lubrication, metal-on-metal contact creates grinding sounds and increases resistance, slowing the belt. Regular lubrication schedules and bearing inspections prevent this common issue.
Question 2: What is the correct procedure before performing maintenance on an electrical panel?
- Wear rubber gloves and proceed
- Apply lockout/tagout procedures (Correct answer)
- Turn off the lights in the area
- Post a warning sign and continue working
Correct answer: Apply lockout/tagout procedures
Lockout/tagout (LOTO) is required before any electrical maintenance to prevent accidental energization.
OSHA's lockout/tagout standard (29 CFR 1910.147) requires that equipment be de-energized and physically locked before maintenance. This involves shutting off power, applying a personal lock to the disconnect, tagging it, and verifying zero energy state before work begins. LOTO prevents approximately 120 fatalities and 50,000 injuries annually.
Question 3: A walk-in cooler is not maintaining temperature and the compressor runs continuously. What should you check first?
- Replace the compressor immediately
- Check the door gaskets and evaporator coils for ice buildup (Correct answer)
- Lower the thermostat setting
- Add more refrigerant without checking for leaks
Correct answer: Check the door gaskets and evaporator coils for ice buildup
Door gaskets allowing warm air in and frosted evaporator coils are the most common causes of cooling inefficiency.
Systematic troubleshooting starts with the most common and easily checked causes. Damaged door gaskets allow warm, moist air to enter, causing the coil to ice over. Ice-covered evaporator coils cannot transfer heat effectively, so the compressor runs nonstop trying to compensate. Defrosting the coils and replacing worn gaskets often resolves the issue without compressor replacement.
Question 4: What type of fire extinguisher should be used on an electrical fire?
- Class A (water)
- Class B (foam)
- Class C (CO2 or dry chemical) (Correct answer)
- Class K (wet chemical)
Correct answer: Class C (CO2 or dry chemical)
Class C extinguishers are rated for electrical fires and use non-conductive agents like CO2 or dry chemical.
Electrical fires require Class C rated extinguishers because water and foam conduct electricity and can cause electrocution. CO2 displaces oxygen without leaving residue, while dry chemical agents smother the fire. Many retail environments use ABC-rated multipurpose extinguishers that cover electrical fires. Always de-energize the circuit if possible before fighting the fire.
Question 5: A fluorescent light fixture is flickering. Which component should you check first?
- The main circuit breaker
- The ballast and starter (Correct answer)
- The wall switch
- The building transformer
Correct answer: The ballast and starter
Flickering in fluorescent fixtures is most commonly caused by a failing ballast or worn starter.
The ballast regulates current flow to fluorescent tubes, and the starter provides the initial voltage spike to ignite the gas. When either component degrades, the tube cannot maintain a stable arc, causing flickering. While tubes themselves can cause flickering near end of life, the ballast and starter are the most common root causes in fixtures with multiple tubes.
Question 6: What is the recommended approach when you find a roof leak in the store during business hours?
- Close the store immediately for repairs
- Place containment (buckets, barriers), cordon off the area, and report to facilities management (Correct answer)
- Ignore it until the store closes
- Attempt a permanent roof repair from inside the store
Correct answer: Place containment (buckets, barriers), cordon off the area, and report to facilities management
Immediate containment prevents slip hazards and property damage, while proper reporting initiates the repair process.
The priority sequence is: contain the water (buckets, wet floor signs, barriers), protect merchandise, cordon off the affected area for customer safety, and immediately report to facilities management for professional repair. Roof repairs should only be done by qualified contractors and never during active weather events.
Walmart Maintenance Assessment Question and Answers 2
A conveyor belt in the distribution area is making a grinding noise and moving slower than normal.
What is the most likely cause?