A controllable pitch propeller on a diesel...

Question 1 / 270705eccef9cbacbc34ba4d45aa1

Question 1 of 270705eccef9cbacbc34ba4d45aa1

A controllable pitch propeller on a diesel driven vessel eliminates the need for __________.

Question 1 of 27070

A controllable pitch propeller on a diesel driven vessel eliminates the need for __________.

🔍 Key Concepts

• Controllable pitch propeller (CPP) and how it changes thrust direction and amount • How engine rotation is handled when going from ahead to astern • Which components are used only to change shaft direction, and which are used to change speed

💭 Think About

• Think about what a controllable pitch propeller can do without changing the direction of shaft rotation—how does that affect going from ahead to astern? • Which listed component is specifically used so a fixed‑pitch propeller can produce astern thrust? • Ask yourself: with a CPP, the engine can keep turning the same way—so which part of a traditional drivetrain becomes unnecessary?

✅ Before You Answer

• Identify which choices are related to changing direction of rotation vs changing speed (RPM) • Decide which device is used mainly with fixed‑pitch propellers to obtain astern thrust • Eliminate any items that are still needed to match engine RPM to propeller RPM even if pitch is controllable

Question 1 of 27070

A controllable pitch propeller on a diesel driven vessel eliminates the need for __________.

friction clutches

disconnect clutches

reversing gears

reduction gears