A type of polymer used for styrofoam cups and clam

17. A type of polymer used for Styrofoam cups and clam shell food containers
18. Mycotoxins are poisonous chemicals produced by: 19. The magnitude of the drag coefficient of a sphere in water is dependent upon all of the ff
except
20. A refrigeration system in which only part of the refrigerant passes over the heat transfer
surface is evaporated and the balance is separated from the vapor and recirculated
21. The boiling point of freon-12 at atmospheric pressure is 22. Which of the following vital components of the refrigeration system where both temperature
and pressure are increased?
23. Which of the following must be done to eliminate frost on the discharge pipe of the
compressor?
24. Orifice coefficients are used to determine:

25. Which of the following is used as high head turbine?
26. A water-tube condenser has a total of 60 tubes. If these two passes, then compute the number
of tubes per pass
27. Absolute zero is 28. Which of the following can be the cause of low head pressure
29. What is the most common freon gas used in centrifugal compressors? 30. When purging an ammonia condenser into a bucket of water, one can tell when the air is out
and ammonia starts to come through the:
31. In the deep well installation or operation, the difference between static water level and
operating water level is known as: