Decide Whether Each of These Statements Is True (T) or False

question 4

Multiple Choice

Decide whether each of these statements is True (T) or False
At a point of contraflexure for a beam:
(i) The bending moment is zero.
(ii) The bending moment changes from being positive on one side to negative on the other.

• A) (i) T (ii) T
• B) (i) T (ii) F
• C) (i) F (ii) T
• D) (i) F (ii) F

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Definitions:

Dys-

A prefix denoting difficult, painful, or abnormal.

Enamel

The hard, protective outer covering of the crown of a tooth, made of mineralized substances.

Cementum

A specialized, calcified substance covering the root of a tooth, playing a vital role in tooth stability by anchoring the tooth to the jawbone through the periodontal ligament.

Dentin

The hard, dense, bony tissue forming the bulk of a tooth beneath the enamel.