Question 356General Subjects - Assistant Engineer

70% to pass

What statement is true with respect to the pressure side of a propeller blade?

AThe pressure side of the propeller blade is the side of the blade which faces downstream during ahead motion and is also known as the back of the blade.

BThe pressure side of the propeller blade is the side of the blade which faces upstream during ahead motion and is also known as the back of the blade.

CThe pressure side of the propeller blade is the side of the blade which faces upstream during ahead motion and is also known as the face of the blade.

DThe pressure side of the propeller blade is the side of the blade which faces downstream during ahead motion and is also known as the face of the blade.

AI Explanation

The correct answer is D) The pressure side of the propeller blade is the side of the blade which faces downstream during ahead motion and is also known as the face of the blade. This is correct because the pressure side of the propeller blade is the side that experiences higher pressure as the blade moves through the water, creating the thrust that propels the vessel forward. During ahead motion, this higher pressure side is the face of the blade, which is the side facing downstream. The other options are incorrect because they either describe the wrong orientation of the pressure side (upstream instead of downstream) or use the incorrect terminology to refer to the face and back of the propeller blade.