The operation of the device shown in the...

🔍 Key Concepts

• Identify which components are fixed to the rudder stock and which are fixed to the ship’s structure in the cutaway drawing • Understand how a friction or clamp-type device around a shaft works: one part must stay still while another part rotates with the shaft • Focus on how movement of the rudder stock would affect parts labeled similar to I versus parts labeled similar to N

💭 Think About

• When the rudder stock turns, which labeled parts clearly appear to be bolted or keyed to the stock itself, and which are seated or bolted into the stationary housing? • For this type of device to operate (apply holding or braking force), do the friction surfaces need relative motion between I and N, or must they move together? • If both I and N rotated together with the stock, would the device still be able to grip or react against anything, or would it just spin freely?

✅ Before You Answer

• Trace the mechanical connection of the pieces like I: look for keys, splines, or direct contact with the rudder stock • Trace the mechanical connection of the pieces like N: see whether they are supported by the outer body/housing instead of the stock • Make sure you can state clearly which group, I-like or N-like parts, must stay relatively fixed so the device can develop a clamping/holding force

The operation of the device shown in the illustration is dependent upon __________. Illustration GS-0116

all items, similar to "I" move as the rudder stock rotates

all items, similar to "N" move as the rudder stock rotates

both "I" and "N" move as the rudder stock rotates

neither "I" nor "N" move as the rudder stock rotates

🔍 Key Concepts

💭 Think About

✅ Before You Answer