Question 171General Subjects - Assistant Engineer
70% to passWhich of the following statements concerning the operation of a single-acting hydraulic ram is correct?
AHydraulic force is applied simultaneously in two directions against the ram by directional ports.
BThe single-acting ram is not retracted by means of hydraulic force.
CThe single-acting ram is both extended and retracted by means of hydraulic force.
DHydraulic force applied to a single-acting ram results in a pulling motion.
AI Explanation
The correct answer is B) The single-acting ram is not retracted by means of hydraulic force. In a single-acting hydraulic ram, hydraulic force is only used to extend the ram. The retraction of the ram is typically accomplished by means of a spring or gravity, not through the application of hydraulic force. This is the key distinguishing feature of a single-acting ram compared to a double-acting ram, where hydraulic force is used to both extend and retract the ram. The other answer choices are incorrect because A) and C) describe the operation of a double-acting ram, while D) describes the operation of a pulling cylinder, not a single-acting ram.
Related Questions
Q190:Which of the statements is true concerning the illustrated hydraulic circuit whe... Q654:Before drilling a hole in a piece of metal, the location of the hole center shou... Q575:What operating condition (or conditions) would necessitate shifting from a high ... Q522:As it pertains to the automatic electric brake of a horizontal electro-mechanica... Q104:What would happen if valve "25" shown in the illustration, vibrated open with th...
Ready to test your knowledge?
Take a General Subjects - Assistant Engineer Practice ExamOfficial Resources