Q47: What is the purpose of the valve B in the below reciprocating compressor system?
A. To keep the suction pressure from rising too high
B. To allow producing oil while the compressor shuts
C. To protect compressor discharge from overpressure
D. To reduce the compressor suction temperature
A & B; A, because excess gas will be flared. B, because gas will be continuously flared if the compressor is shut, allowing oil production.
Q48. THE SECRET WORD
A teacher writes six words on a board: “cat dog has max dim tag.” She gives three students, Amy, Betty and Cathy each a piece of paper with one letter from one of the words. Then she asks, “Amy, do you know the word?” Amy immediately replies yes. She asks, “Betty, do you know the word?” She thinks for a moment and replies yes. Then she asks Cathy the same question. She thinks and then replies yes.
What is the word?
Dog
Amy knows right away because she has one of the unique letters that only appear once in all the words: c o h s x i. So, we know the word is not “tag.” All of these unique letters appear in different words, except for “h” and “s” in “has,” and Betty can figure out what the word is from the unique letters that are left: t, g, h, s. This eliminates “max” and “dim.” Cathy can then narrow it down the same way. Because there is only one unique letter left, the letter “d,” the word must be “dog.”