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

Replace the entire HVAC unit

Answer

Open windows to let cool air in

Answer

Turn off the HVAC system completely

Question 2

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

Accepted Answer

Insulation resistance between windings and ground

Answer

Motor speed in RPM

Answer

Voltage output of the motor

Answer

The temperature of motor bearings

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

The breaker is faulty and needs replacement

Answer

The lights are too bright for the circuit

Answer

The parking lot timer is malfunctioning

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

To measure the weight of the equipment

Answer

To determine the color coding for maintenance schedules

Answer

To measure the electrical consumption

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

Replace the door motor

Answer

Disconnect the door and prop it open

Answer

Install a manual door instead

Question 6

When brazing copper refrigeration lines, what gas should be used to prevent internal oxidation?

Accepted Answer

Dry nitrogen

Answer

Compressed air

Answer

Carbon dioxide

Answer

Oxygen