Challenge

Click on the correct answer


1	Which of the following is not one of the three principle types of spinning?
		melt
		wet
		dry
		deposition
		none of the above

2	What is meant by "specific" properties?
		the property is specific only to that polymer
		it is not a general property
		it is the individual property divided by the density of the material
		it is the individual property divided by the molecular weight of the material
		you forgot your pencil

3	How are silicon-carbide and/or boron-tungsten fibers made.
		mix them all together in the same pot
		deposit silicon onto carbide or boron onto tungsten
		deposit carbide onto silicon or tungsten onto boron
		none of the above, you melt spin the material
		these fibers are unable to be made

4	A material containing what kind of fiber and orientation will give the best properties in a given direction.
		unoriented chopped fibers
		small reinforcing beads
		oriented short fibers
		long continuous unidirectional fibers
		fiber particulate hybrid

5	Why are certain polymeric fibers drawn?
		increase crystallinity
		increase the modulus
		increase the strength
		answeres A, B, and C are correct
		none of the above

6	Place in order of increasing diameter.
		fiber > filament > whisker
		fiber < filament >whisker
		fiber < filament < whisker
		fiber > filament < whisker
		none of the above

7	Which of the three principle spinning processes has the slowest windup speed.
		melt
		wet
		dry
		they are all slow
		they are all fast

8	Which of the following are criteria for good fibers?
		high tensile modulus and strength
		high impact resistance
		high stiffness
		high dimensional stability
		all of the above

9	Which of the following is/are advantage(s) of a composite over a metallic material.
		light weight
		corrosion resistance
		excellent vibrational damping
		high dimensional stability
		all of the above

10	Was this webpage composed effectively.
		yes
		no
		could be a little better
		could be a lot better
		middle of the road