OIT Maintenance and Troubleshooting 2

Question 1

A pump is running but producing no flow. Which condition should you check FIRST?

Accepted Answer

Discharge valve is closed

Answer

A closed discharge valve is the simplest and most common cause of no flow from a running pump.

Question 2

When performing a lockout/tagout procedure, what is the correct order of steps?

Accepted Answer

Notify, isolate, lock, verify zero energy

Answer

LOTO requires notifying affected workers first, then isolating energy sources, applying locks, and verifying zero energy state.

Question 3

An operator notices excessive vibration in a centrifugal pump. Which cause is MOST likely?

Accepted Answer

Impeller imbalance or cavitation

Answer

Impeller imbalance and cavitation are the leading causes of abnormal pump vibration.

Question 4

What does a rising amperage reading on a motor suggest during normal operation?

Accepted Answer

Increasing mechanical load

Answer

Rising amperage indicates the motor is working harder, typically due to increased mechanical resistance or load.

Question 5

Which type of bearing failure is characterized by a high-pitched squealing noise?

Accepted Answer

Lubrication starvation

Answer

Lubrication starvation causes metal-on-metal contact, producing a high-pitched squeal from the bearing.

(OIT) Operator in Training Practice Test