As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.

A、advance

B、cavitation

C、edging

D、slip

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更多“As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.”相关的问题

第1题

[单选题] For vessels with （）, the meaning of the order would include the combination of pitch and revolutions as indicated in ships orders.

A、fixed pitch propellers B、uncontrollable pitch propeller C、constant pitch propellers D、variable pitch propellers

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第2题

[单选题] Vessel propellers are classified as being right hand or left handA right hand propeller turns clockwise when viewed from（）.

A、the bow B、the stem C、the port side D、the starboard side

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第3题

[] When the propeller blades are integral with the hub, the propeller is called a （）.

A、A.built up propeller B、B.solid propeller C、C.controllable pitch propeller D、D.suction back propeller

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第4题

[单选题] Kort nozzles are installed around the propellers of some vessels to（）.

A、Increase the thrust of the propeller B、Protect the propeller from striking sawyers C、Prevent the propeller from striking barges towed on the ship D、Prevent the propeller from touching bottom in low water

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第5题

[单选题] The pitch ratio of a propeller is the mean pitch divided by （）.

A、the propeller diameter B、the propeller radius C、the pitch angle D、the length of helix

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第6题

[单选题] The pitch of a propeller is a measure of the（）.

A、angle that the propeller makes with a free stream of water B、angle that the propeller makes with the surface of the water C、number of feet per revolution the propeller is designed to advance in still water without slip D、positive pressure resulting from the difference of the forces on both sides of the moving propeller in still water without slip