What is the major advantage of a flash type mold closure system in compression molding? What are the disadvantages?
What will be an ideal response?
The flash type mold closure is the simplest of the three mold types and the least expensive to build. The flash type closure works best for shallow parts and parts where dimensional control and property are not critical. The disadvantages:
There will always be flash requiring post processing and increasing cost. There is always some excess that is used; therefore there is always some waste and it cannot be reground and used again.
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What are the advantages of a PCV system?
What will be an ideal response?
Microspray irrigation is particularly useful for irrigating orchards, landscape beds, and in coarse, sandy
soils.
Indicate whether the statement is true or false.An RL high-pass filter consists of an RF of 150 ? and an LF of 5.2 mH. An RL of 910 ? is placed across the output coil, LF. The circuit's cutoff frequency is
A) 5.37 kHz B) 3.94 kHz C) 27.7 kHz D) 394 Hz
High efficiency condensers ____.
A. can withstand higher pressures than standard condensers B. have more surface area than standard condensers C. have stainless steel coils D. are located in separate cabinets