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Questions and Answers
What principle does the Pressure Tube Log operate on?
What principle does the Pressure Tube Log operate on?
- Pitotmeter Principle (correct)
- Electro Magnetic Induction Principle
- Doppler Effect Principle
- Hydrodynamic Pressure Principle
What happens to the pressure in the tube if it is held stationary?
What happens to the pressure in the tube if it is held stationary?
- Fluctuates (dynamic pressure)
- Increases (static pressure)
- Remains constant (static pressure) (correct)
- Decreases (dynamic pressure)
What does Pitot's Law relate dynamic pressure (p) to?
What does Pitot's Law relate dynamic pressure (p) to?
- The ship's length
- The square of the ship's speed (v) (correct)
- The ship's width
- The ship's weight
How is static pressure's effect eliminated in order to get accurate dynamic pressure readings?
How is static pressure's effect eliminated in order to get accurate dynamic pressure readings?
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Where is the static tube located in the practical installation of the speed log?
Where is the static tube located in the practical installation of the speed log?
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How are both static and dynamic pressures transferred to the speed indicator on the ship's bridge?
How are both static and dynamic pressures transferred to the speed indicator on the ship's bridge?
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In a Pitot system installation on a vessel, what is the purpose of the seacock arrangement and valve control?
In a Pitot system installation on a vessel, what is the purpose of the seacock arrangement and valve control?
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What is a limitation of the EM Log system?
What is a limitation of the EM Log system?
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How does the EM Log determine the vessel's speed?
How does the EM Log determine the vessel's speed?
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How is speed indication affected in Pitot's Law as the ship's speed increases?
How is speed indication affected in Pitot's Law as the ship's speed increases?
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