2-23. What term refers to the property of a
metal that will NOT permit it to tear
or shear easily?
1. Toughness
2. Brittleness
3. Strength
4. Hardness
2-24. What term refers to the ability of a
metal to stretch or bend without
breaking?
1. Toughness
2. Brittleness
3. Strength
4. Ductility
2-25. What term refers to the ability of a
metal to maintain heavy loads without
breaking?
1. Toughness
2. Strength
3. Hardness
4. Ductility
2-26. What term refers to the property of a
metal that allows it to be rolled,
forged, hammered, or shaped without
cracking or breaking?
1. Malleability
2. Ductility
3. Strength
4. Toughness
2-27. Metals and alloys are divided into
which of the following general
classes?
1. Light and heavy
2. Hard and soft
3. Smooth and rough
4. Ferrous and nonferrous
2-28. What are the two systems used by the
Navy to identify metals?
1. The color marking system and the
weight system
2. The numbering system and the
weight system
3. The continuous identification
marking system and the color
marking system
4. The continuous identification
marking system and the weight
system
2-29. Which of the following references
contains information on the metals
used aboard ship, their properties,
and their identification systems?
1. NAVEDTRA 10571-1
2. NAVEDTRA 12061
3. NAVEDTRA 10792-E
4. NAVEDTRA 10925
2-30. Electricity is a combination of a
force called voltage and the movement
of invisible particles known as
1. resistance
2. friction
3. mass
4. current
2-31. In reference to current, which of the
following statements is NOT true?
1. Current is the movement of
invisible particles
2. Current causes electrical devices
to operate
3. Current cannot be seen
4. Current can flow out of a broken
wire
2-32. Ohm’s law is stated as I = E/R, What
does I refer to?
1. Voltage in volts
2. Current in amperes
3. Resistance in ohms
4. Pressure in pounds
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