Ramsay Test Mechanical Maintenance 2

Question 1

A V-belt is slipping on its pulleys even though it appears intact. What is the most likely cause?

Accepted Answer

Belt tension is too low

Answer

Insufficient tension lets the belt slip in the pulley grooves, causing power loss and squealing.

Question 2

Which tool is best for measuring the inside diameter of a bored hole to within 0.001 inch?

Accepted Answer

Inside micrometer

Answer

An inside micrometer gives precise internal diameter readings to a thousandth of an inch.

Question 3

A bearing runs hot and noisy shortly after installation. The most common cause is:

Accepted Answer

Over-lubrication or misalignment

Answer

Excess grease or shaft misalignment generates heat and premature bearing failure.

Question 4

Two spur gears mesh together. If the driver gear has 20 teeth and the driven gear has 40 teeth, the driven gear turns:

Accepted Answer

Half as fast as the driver

Answer

A larger driven gear (double the teeth) rotates at half the driver's speed.

Question 5

What is the purpose of a shim during machine alignment?

Accepted Answer

To make small height adjustments under a component

Answer

Thin shims are placed under feet to raise components in precise increments for alignment.

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