Question 162General Subjects - 1st Asst/Chief70% to pass
What type of propulsor is typically used in electric motor driven, transverse, tunnel bow thrusters to limit the starting current of the single speed drive motor?
AI Explanation
The correct answer is C) Controllable-pitch propeller.
Tunnel bow thrusters often use controllable-pitch propellers to limit the starting current of the single speed drive motor. This is because controllable-pitch propellers allow the pitch to be adjusted, which enables the thruster to produce the necessary thrust without drawing an excessively high starting current from the electric motor. The other options, such as cycloidal, detachable-blade, and fixed-pitch propellers, do not offer the same ability to adjust the pitch and manage the starting current.
Related Questions
#160 What statement represents the fundamental difference between an azimuthing thruster and a podded propulsor? #161 With respect to a "tractor" type azimuthing thruster, what statement is true? #163 Which set of operating conditions would be most problematic in terms of the deterioration of the insulation resistance of the drive motor of an electric motor driven transverse tunnel bow thruster? #164 Of the following propulsion modes, which one would operate with a geared-drive featuring a single reduction? #165 For a parallel axis single reduction gear, what statement is true?