Aux 1 Unit 10 Q8

1 / 10

Why is water expelled at high velocity in a water jet thruster system?

D) To reduce the vessel's weight

C) To increase the vessel's draft

B) To generate a sufficient reactive force that propels the vessel in the opposite direction of the expelled water

A) To cool the vessel's engine

2 / 10

How is thrust generated in a water jet thruster?

A) By rotating the propeller at high speeds

C) By increasing the vessel's engine power

D) By lowering the vessel's draft

B) By using an impeller to draw in water and expel it at high velocity through a nozzle

3 / 10

What is the purpose of the tunnel in a transverse water jet thruster system?

C) To decrease the vessel's draft

D) To store water for ballast

B) To increase the vessel's speed

A) To house the impeller and nozzle, guiding the flow of water across the vessel to create lateral thrust

4 / 10

Where is the water intake typically located in a transverse water jet thruster system?

B) On the sides of the vessel

D) On the bottom of the vessel

A) At the bow or stern of the vessel

C) On the deck of the vessel

5 / 10

Which of the following is a key advantage of using a transverse water jet thruster in a vessel?

A) It provides propulsion at high speeds.

B) It allows for precise lateral movement, making docking and maneuvering in tight spaces easier.

C) It increases fuel efficiency at cruising speeds.

D) It eliminates the need for a rudder.

6 / 10

What role does the nozzle play in the operation of a water jet thruster?

B) It directs the flow of water to create thrust in the desired direction.

A) It reduces the water pressure.

D) It filters debris from the water.

C) It increases the temperature of the water.

7 / 10

Which principle of physics primarily governs the operation of a water jet thruster?

B) Bernoulli's principle

C) Newton's third law of motion: for every action, there is an equal and opposite reaction

A) Conservation of energy

D) The law of buoyancy

8 / 10

What is the primary component used to generate water flow in a transverse water jet thruster?

D) A rudder blade

B) An impeller driven by an electric or hydraulic motor

C) A manually operated pump

A) A hydraulic piston

9 / 10

How is the direction of thrust controlled in a transverse water jet thruster?

A) By changing the speed of the vessel

C) By using a nozzle that directs the water flow to either side of the vessel

D) By adjusting the vessel's rudder

B) By rotating the entire thruster assembly

10 / 10

In a transverse water jet thruster, what role does the motor play?

C) It adjusts the angle of the propeller blades.

D) It increases the vessel's speed.

A) It cools down the water before it is expelled.

B) It powers the impeller, which generates the water flow necessary for thrust.

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