Question 351General Subjects - Assistant Engineer
70% to passWith respect to the vectoring ring of a steerable internal duct thruster, what statement represents the operating principle of the vectoring ring?
AThe vectoring ring is used to control the orientation of the inlet guide vanes to the pump inlet.
BThe vectoring ring is used to control the orientation of the deflector vanes of the pump discharge.
CThe vectoring ring is used to control the speed and direction of rotation of the pump.
DThe vectoring ring is used to control the orientation of the vanes on the pump impeller.
AI Explanation
The correct answer is B. The vectoring ring of a steerable internal duct thruster is used to control the orientation of the deflector vanes of the pump discharge. The operating principle of the vectoring ring is to adjust the deflector vanes at the pump discharge, which changes the direction of the water flow and allows the thruster to provide thrust in different directions. This allows the vessel to be maneuvered more precisely. The other answer options are incorrect because they do not accurately describe the function of the vectoring ring. The vectoring ring does not control the inlet guide vanes, the speed and direction of the pump, or the impeller vanes.
Related Questions
Q141:Which of the following statements concerning the arrangements of a potable water... Q10:Which of the following ballasting operations performed in conjunction with off-l... Q232:What is an engine room bilge oily-water separator designed to do? Q226:Referring to the illustration, what would be the result if the lower oil/water i... Q204:For the various sizes of tubing and wall thickness used in a hydraulic system, t...
Ready to test your knowledge?
Take a General Subjects - Assistant Engineer Practice ExamOfficial Resources