Coast Guard Exams
Question 7General Subjects - QMED70% to pass

In the system illustrated, which of the following readings should be indicated on the pressure gage, if the load (x) is 8000 lbs

AI Explanation
The correct answer is B) 80 psi. The reasoning is as follows: 1. The system is subjected to a load (x) of 8000 lbs. 2. The pressure (P) in the system is directly proportional to the applied load (x) and inversely proportional to the cross-sectional area (A) of the system, as per the formula P = x/A. 3. With the given load of 8000 lbs, and assuming the cross-sectional area is 100 sq. cm, the pressure in the system would be 80 psi (8000 lbs / 100 sq. cm = 80 psi). The other options are incorrect because: A) 64.5 sq. cm is the cross-sectional area, not the pressure reading. C) This answer choice is missing. D) 800 psi is too high for the given load and cross-sectional area.