Walmart Maintenance Technician Question and Answers 2

Question 1

A store manager reports that the HVAC system is blowing warm air in the frozen food section. What should you diagnose first?

Accepted Answer

Check the thermostat settings and refrigerant levels in the zone system

Answer

Start with the simplest checks: thermostat settings and refrigerant levels before considering component replacement.

Question 2

What does a megohmmeter (megger) test measure in an electric motor?

Accepted Answer

Insulation resistance between windings and ground

Answer

A megger test measures insulation resistance, indicating whether motor winding insulation is degraded.

Question 3

The parking lot lights on one circuit are out. You check the breaker and it has tripped. After resetting, it trips again immediately. What is the likely cause?

Accepted Answer

There is a short circuit in the wiring or a fixture on that circuit

Answer

An immediately re-tripping breaker indicates a short circuit that must be located and repaired before restoring power.

Question 4

What is the primary reason for performing vibration analysis on rotating equipment?

Accepted Answer

To detect early signs of bearing wear, misalignment, or imbalance

Answer

Vibration analysis detects mechanical issues early, allowing planned repairs before catastrophic failure.

Question 5

A automatic sliding door keeps opening and closing on its own with no one nearby. What should you check?

Accepted Answer

Check and adjust the motion sensor sensitivity and alignment

Answer

False triggers from motion sensors are usually caused by sensitivity set too high or sensors aimed at moving objects like signs or trees.

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Walmart Maintenance Technician Question and Answers 2