Question 156General Subjects - 1st Asst/Chief
70% to passWhat type of propeller consists of a flat disc set flush with the under surface of the vessel's hull with a number of vertical, rudder-like blades projecting from it?
AHelicoidal propeller
BCycloidal propeller
CContra-rotating propeller
DTandem propeller
AI Explanation
The correct answer is B) Cycloidal propeller. A cycloidal propeller consists of a flat disc set flush with the under surface of the vessel's hull, with a number of vertical, rudder-like blades projecting from it. This design allows the thrust vector to be varied in both magnitude and direction, providing excellent maneuverability. This is the defining characteristic of a cycloidal propeller that distinguishes it from other propeller types like helicoidal, contra-rotating, or tandem propellers. The other answer choices are incorrect because they do not accurately describe the specific features of a cycloidal propeller as outlined in the question.
Related Questions
Q141:Which of the filter/strainer units listed permits you to clean the element while... Q160:What statement represents the fundamental difference between an azimuthing thrus... Q199:It is absolutely essential that hydronic heating system hot water piping be kept... Q343:As a manager considering which approach to use at a meeting, what type of meetin... Q133:Which type of lubricating oil method is LEAST likely to have a lube oil strainer...
Ready to test your knowledge?
Take a General Subjects - 1st Asst/Chief Practice ExamOfficial Resources