Walmart Maintenance Test Question and Answers 2

Question 1

What is the recommended air filter replacement frequency for a commercial rooftop HVAC unit in a retail environment?

Accepted Answer

Every 30-90 days depending on conditions

Answer

Commercial HVAC filters in high-traffic retail environments should be checked monthly and replaced every 30-90 days.

Question 2

When using a multimeter to check for voltage in a 120V outlet, between which points should you place the probes?

Accepted Answer

Hot (narrow slot) and neutral (wide slot) or hot and ground

Answer

Voltage is measured between the hot conductor and either neutral or ground to read the potential difference.

Question 3

A belt-driven exhaust fan is making a squealing noise. What is the most probable cause?

Accepted Answer

The belt is loose, worn, or glazed

Answer

Squealing from belt-driven equipment typically indicates a loose, worn, or glazed belt that is slipping on the pulleys.

Question 4

What is the purpose of a backflow preventer in a commercial plumbing system?

Accepted Answer

To prevent contaminated water from flowing back into the potable water supply

Answer

Backflow preventers protect the public water supply from contamination caused by pressure changes in the plumbing system.

Question 5

During a routine inspection, you notice corrosion on the battery terminals of an emergency generator. What should you do?

Accepted Answer

Clean the terminals with a baking soda solution, apply anti-corrosion compound, and tighten connections

Answer

Battery terminal corrosion increases resistance, which can prevent the generator from starting when needed. Cleaning and protecting the terminals is routine maintenance.

Walmart Practice Test

Walmart Practice Test

Walmart Maintenance Test Question and Answers 2