Ability of an orthodontic wire to spring back to its original shape is evaluated by_____________?
A. Brittleness
B. Resilience
C. Tensile strength
D. Toughness
Physical Properties
The point at which a stress of a material exhibits a specific limited deviation P is called_______________?
The point at which a stress of a material exhibits a specific limited deviation P is called_______________?
A. Proportional limit
B. Tensile strength
C. Ultimate strength
D. Yield strength
Compressive stress is computed by dividing the external force by the_______________?
Compressive stress is computed by dividing the external force by the_______________?
A. Area of the test specimen upon which the weight rests
B. Elasticity of the test specimen in strain
C. Length of the test specimen beneath the force
D. Strain of the test specimen per unit length
The proportional limit is defined as______________?
The proportional limit is defined as______________?
A. The maximum stress in a structure
B. The minimum force required to cause a structure to break
C. The maximum stress that can be induced without permanent deformation
D. The maximum elongation under tension that can be measured before failure
Stress in defined as_______________?
Stress in defined as_______________?
A. An applied load or force
B. A deformation resulting from an applied load
C. An external force opposing an applied load
D. An internal force opposing an applied load