28. An example of non-destructive testing is a. Weighing a bucket of aggregate i

Question

28. An example of non-destructive testing is a. Weighing a bucket of aggregate in water b. Using a Schmit hammer to test concrete strength Crushing a cylinder in a compression tester d. Stretching a polymer sample in a tension tester e. Loading and unloading a steel sample a million times 29. is the same for iron and low carbon steels regardless of the carbon content a. Creep modulus b. Tensile strength c. Yield strength d. Modulus of elasticity e Failure strength 30. Covalent bonds a Are the main type of bond for the class of materials known as metals b Exchange electrons between the cation and aniorn Share electrons in a cloud c. d. Have highly directional orientation a. 5 b. 4 31. The number of atoms per unit cell for an FCC structure is

Explanation / Answer

28. An example of non-destractive test is b. using schmit hammer to test concrete
( ultra sonic pulse velocity is also non destractive test)

29. Modulus of elasticity is the same for iron and low carbon steel regardless of the carbon content.
( but strength and others depend upon carbon content)

30.covalent bonds shear electron in clouds.

31.the number of atoms per unit cell for FCC structur is 4

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