What type of tray design is designed with stationary risers in the deck area of each tray?
A) Sieve tray
B) Valve tray
C) Bubble cap tray
D) Overhead tray
Answer: C
Explanation: A) Incorrect. A sieve tray is designed with perforated openings, typically circular, in the tray deck.
B) Incorrect. A valve tray contains valve lifters, similar to those in a car engine. The valve is lifted, or opened, as the vapor rate increases.
C) Correct. A bubble cap tray is designed with risers in the deck area of each tray.
D) Incorrect. A sieve tray is designed with perforated openings, typically circular, in the tray deck.
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