Exam Question
A controllable pitch propeller on a diesel driven vessel eliminates the need for:
(a) Friction clutches
(b) Disconnect clutches
(c) Reversing gears
(d) Reduction gears
Justify your answer and explain the working of CPP in brief. (16)
Class 4 (4th Engineer)
MEKG
📅 Mar 2025
Reference Answer
The correct answer is **(c) Reversing gears**.
### Justification of the Answer
A Controllable Pitch Propeller (CPP) system on a diesel-driven vessel, particularly one with a medium-speed engine, fundamentally eliminates the need for reversing gears within the gearbox. The justification is as follows, along with an analysis of why the other options are incorrect.
**1. Elimination of Reversing Gears (Option c):**
### Justification of the Answer
A Controllable Pitch Propeller (CPP) system on a diesel-driven vessel, particularly one with a medium-speed engine, fundamentally eliminates the need for reversing gears within the gearbox. The justification is as follows, along with an analysis of why the other options are incorrect.
**1. Elimination of Reversing Gears (Option c):**
Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.
Prepare on Android — MeoMock on Google Play