Ramsay Test Maintenance 4

Question 1

What is the purpose of a check valve in a piping system?

Accepted Answer

To allow flow in one direction only

Answer

A check valve permits flow one way and prevents backflow.

Question 2

When a three-phase motor runs in the wrong direction, what is the standard fix?

Accepted Answer

Swap any two of the three power leads

Answer

Reversing any two of the three phase leads reverses motor rotation.

Question 3

Which fastener uses a tapered thread to create a tight, often leak-resistant joint in pipes?

Accepted Answer

NPT pipe thread

Answer

NPT tapered threads wedge together to seal pipe connections.

Question 4

A vibration analysis shows a peak at 1x running speed. This most commonly indicates what?

Accepted Answer

Imbalance in the rotating component

Answer

A dominant 1x running-speed peak is the classic signature of imbalance.

Question 5

What is the main advantage of predictive maintenance over preventive maintenance?

Accepted Answer

Work is based on actual equipment condition data

Answer

Predictive maintenance uses condition monitoring to service equipment only when needed.

Ramsay Test Practice Test