Describe a technique for forming a part with an outer coating and a different inner material using rotomolding
What will be an ideal response?
One method that will accomplish this formation of an outer shell is to mix two resins that have different melting points. During the rotomolding operation, the lower melting resin will become sticky first and coat the inside of the mold, thus forming the outer layer of the part. Later, the higher melting material will coat onto the shell and form the inner material. Another method is slush molding which one resin is put into the mold and poured out after a thin film has formed on the mold. A second material is then added to complete the part.
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How would you describe a foundation called footing? Is it a deep foundation or shallow foundation?
What will be an ideal response?
Air compressors are used to operate _____.
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Which of the following conditions will cause a DC series motor to develop into a runaway condition?
A. the armature coil opens B. the field coil opens C. the physical load which it drives becomes disconnected D. all of the above
The combined weight of a building's structure and its foundation make up its _____
a. dynamic load b. ground load c. static load d. total load