Question

8. In general, metals are characterized by which of the following properties (three best answers): A) brittleness B) chemical inertness C) electrically insulating D) high electrical conductivity E) high hardness F) high thermal conductivity G) low density H) low thermal conductivity

9. In general, ceramics are characterized by which of the following properties (four best answers): A) brittleness B) chemical inertness C) electrically insulating D) high electrical conductivity E) high hardness F) high thermal conductivity G) low density H) low thermal conductivity

13. The transverse rupture strength is a property usually associated with which one of the following material types: A) ceramics B) metals C) plastics D) rubber 14. The shear strength of a metal is commonly determined in which one of the following tests: A) bending test B) compression test C) flexure test D) tensile test E) torsion test

15. The shear strength of a metal is usually: A) greater than its tensile strength B) less than its tensile strength

17.

The thermal expansion properties of polymers are generally:

A) greater than as those of metals
B) less than as those of metals
C) the same as those of metals

18.

Ohm’s Law is expressed by which one of the following relationships:

A) current = voltage divided by resistivity
B) current = voltage multiplied by resistance
C) power = current multiplied by voltage
D) resistance = voltage multiplied by current
E) voltage = current multiplied by resistance

19.

The electrical conductivity of a material is the reciprocal of its resistivity: (a) true or (b) false?

A) True
B) False

20.

Which of the following pure metals is the best conductor of electricity:

A) aluminum
B) copper
C) gold
D) silver

21.

Surface texture includes which of the following characteristics of a surface (three correct answers):

A) deviations from the nominal surface
B) deviations from the nominal surface
C) hardness variations
D) oil films
E) surface cracks

Answer 1