A. Brittleness
B. Resilience
C. Tensile strength
D. Toughness
A. Proportional limit
B. Tensile strength
C. Ultimate strength
D. Yield strength
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
Compressive stress is computed by dividing the external force by the_______________? Read More »
Dental Materials, Medical Mcqs, Physical Properties 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
The proportional limit is defined as______________? Read More »
Dental Materials, Medical Mcqs, Physical Properties 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
Stress in defined as_______________? Read More »
Dental Materials, Medical Mcqs, Physical Properties A. Casts
B. Models
C. Investment
D. Dies
Setting expansion is advantageous in__________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Using asbestos linear
B. Placing the sprue at least one quarter inch away form the end of casting ring
C. Preventing rapid heating the investment in burnout oven
D. Using a short and wide sprue
Back pressure porosity can be avoided by________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Reducing flame
B. Oxidizing flame
C. Green flame
D. All of the above
Which of the following zones is used for melting alloy during casting______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Warm HCI
B. Cold HF
C. Cold H2SO4
D. Sand blasting with aluminium oxide
Cleaning of base metal alloy is done by______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. a titanium
B. B titanium
C. Chrome-cobalt-nickel
D. Nickel-titanium
Which one of the following is most elastic ? Read More »
Dental Materials, Medical Mcqs, Metallurgy