Ramsay Test Mechanical Maintenance 1

Question 1

What type of maintenance is performed on a scheduled basis regardless of equipment condition?

Accepted Answer

Preventive maintenance

Answer

Preventive maintenance (PM) is scheduled at regular intervals (time-based or usage-based) regardless of equipment condition. It aims to prevent failures before they occur.

Question 2

What does vibration analysis in predictive maintenance primarily detect?

Accepted Answer

Imbalance, misalignment, bearing wear, and looseness in rotating machinery

Answer

Vibration analysis measures and interprets vibration signatures to identify mechanical problems in rotating equipment. Different defects (imbalance, misalignment, bearing faults) produce characteristic frequency patterns.

Question 3

A shaft coupling is misaligned. Which type of coupling can best accommodate angular misalignment?

Accepted Answer

Flexible jaw coupling

Answer

Flexible jaw (spider) couplings can accommodate small amounts of angular, parallel, and axial misalignment through the elastomeric spider element. Rigid couplings cannot tolerate any misalignment.

Question 4

What is the correct method for installing a bearing onto a shaft using the inner ring press-fit method?

Accepted Answer

Apply force only to the inner ring using a bearing installation tool or press

Answer

When press-fitting a bearing onto a shaft, force must be applied only to the inner ring (the interference fit surface). Striking the outer ring transmits force through the rolling elements, causing damage.

Question 5

Which lubrication method is best suited for high-speed, lightly loaded bearings?

Accepted Answer

Oil mist or oil bath lubrication

Answer

High-speed bearings generate significant heat. Oil mist or oil bath provides continuous, light lubrication with good cooling. Heavy grease packing at high speeds increases friction and heat.

Ramsay Test Practice Test

Ramsay Test Practice Test

Ramsay Test Mechanical Maintenance 1