Question

a good grinding wheel will have a ______ sound when it is \sounded\. * 2 points
a. dull
b. high pitch
c. ringing
d. low pitch
a fractured grinding wheel will have a ______ sound when it is \sounded\. * 2 points
a. dull
b. high pitch
c. ringing
d. low pitch

Explanation:

A good grinding wheel is solid - structured and when sounded, it produces a ringing sound due to its integrity. A fractured grinding wheel has internal damage or cracks, which dampen the sound, resulting in a dull sound when sounded.

Answer:

1. c. ringing
2. a. dull