What is the principle problem when forming a bottle using injection molding?
What will be an ideal response?
If the diameter of the mouth of the bottle is smaller than the diameter of the body, some method must be provided to remove the core pin. The core pin will have the diameter of the body and, therefore, must collapse or be reduced in diameter by some other method. This is a difficult mechanical problem that is eliminated when blow molding is the method for forming the bottle.
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Which of the following commercial loads can be fed from a regular circuit rather than an emergency circuit?
a. Exit lights b. Life safety systems c. Fire alarm systems d. Computer equipment
Finishes are first classified in terms of what is being finished; they are then separated by type of finish.
Answer the following statement true (T) or false (F)
During a battery load test, battery voltage should not drop below ________ volts
A) 8.6 B) 9.6 C) 10.5 D) 7.5
V-belts do not handle __________ well
A. high speed B. high heat C. fractional hp D. cold