What is the term for the maximum angle the rope travels between the sheave and the drum?

Prepare for the Boatswain’s Mate Chief (BMC) SWE Exam with in-depth study materials and multiple-choice questions. Enhance your understanding with well-explained hints and explanations. Ready yourself to excel!

Multiple Choice

What is the term for the maximum angle the rope travels between the sheave and the drum?

Explanation:
The thing being measured is how much of the rope is in contact with the drum as it passes from the sheave to the drum. This is known as the wrap angle (also called the arc of contact). It describes the amount of direction change the rope experiences and the portion of the drum’s circumference that the rope touches. In a given setup, geometry fixes this contact into a specific angle. Here, the maximum angle the rope deflects between the sheave and the drum is 1.5 degrees, which is why that option is selected for this configuration. The wrap angle controls how much friction can act between rope and drum, so understanding this term helps you assess how the rope will grip the drum.

The thing being measured is how much of the rope is in contact with the drum as it passes from the sheave to the drum. This is known as the wrap angle (also called the arc of contact). It describes the amount of direction change the rope experiences and the portion of the drum’s circumference that the rope touches. In a given setup, geometry fixes this contact into a specific angle. Here, the maximum angle the rope deflects between the sheave and the drum is 1.5 degrees, which is why that option is selected for this configuration. The wrap angle controls how much friction can act between rope and drum, so understanding this term helps you assess how the rope will grip the drum.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy