Explain how both undercuring and overcuring can cause cracking on removal from the compression molding process
What will be an ideal response?
Undercuring will not allow all the cross linking to occur and the part will not be as strong. Overcuring may cause the resin to degrade and loose its strength. Some of the probable causes from over curing or undercuring include: external blisters, marks from ejector pins, internal voids, sticking, brittle parts, and cracking on ejection.
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List the five gasses analyzed by a five gas analyzer.
What will be an ideal response?
Answer the following statements true (T) or false (F)
1. A prescriptive code needs no standards. 2. Roof live load is a function of the building's occupancy. 3. An average tornado strikes a larger area on the ground than a hurricane. 4. For wind blowing along one of the two major axes of a rectangular building, the windward wall is subjected to positive (toward-the-wall) pressure.
A transistor is controlled by the polarity and current at _____________
A) The collector B) The emitter C) The base D) Both A and B
Torque multiplication is possible when a torque converter is in this mode:
a. rotary flow b. vortex flow c. lock up d. dual phase