Identify the four major types of polymeric liquids used for casting, and give one specific example of each type
What will be an ideal response?
Liquid casting resin – acrylic syrup, polyester resin, polyurethane, caprolactam Hot-melt resin – melted nylon, melted polyethylene
Plastisols and organisols – PVC plastisol
Solvent casting resin – acrylic dissolved in an acetone, nylon in dimethylformamide
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The machine shown in the above figure is a(n) _____.
a. aerial lift
b. backhoe loader
c. trencher
d. soil compactor
Match the following types of crops
a. oil c. specialty b. field 8. corn 9. safflower seed 10. wheat 11. cotton 12. flax 13. tobacco 14. peanuts
Which of the following is an example of a piezoelectric sensor?
A. Oil pressure gauge sender unit B. Knock sensor C. Wheel speed sensor D. Coolant temperature sensor
Which of the following is a drawback to direct FM systems?
A. Preserving both the amplitude and frequency characteristics of the intelligence. B. Maintaining the frequency stability of the transmitter. C. Narrowband FM systems occupy less bandwidth. D. Modulation index for FM systems is stable.