Class 2 (2nd Engineer) MEKG 📅 Jan 2024

Exam Question

With respect to Windlass and deck Machinery:

(a) Describe the principle of coil-operated brake suitable for winches and other deck machinery. (8)

(b) Explain with suitable sketches how the windlass is relieved of strain when riding at anchor. (8)

Reference Answer

### (a) Principle of a Coil-Operated Brake for Winches and Deck Machinery
A coil-operated brake, typically an electromagnetic fail-safe brake, is a critical safety and operational component on deck machinery like winches and windlasses. Its primary function is to hold the load securely when the driving motor is not in operation or in the event of a power failure.
**1. Principle of Operation (Fail-Safe Design)**
The fundamental principle is 'power-off, brake-on'. This ensures that any loss of control or power results in the load being safely held. The operation is as follows:

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