Rate Of Turn Basic-training

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Questions: 14 | Attempts: 119

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• 1.

What is the voltage the gyro sensor uses?

• A.

5 Volt

• B.

12 Volt

• C.

15 Volt

• D.

24 Volt

C. 15 Volt
Explanation
The gyro sensor uses a voltage of 15 volts.

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• 2.

What is the right order to adjust the zero of the Rate of Turn and other connected equipment.

• A.

Gyro sensor, Rate of Turn display, Riverpilot, Radar

• B.

Rate of Turn display, Gyrosensor, Riverpilot, Radar

• C.

Riverpilot, Gyro sensor, Rate of Turn display, Radar

• D.

Gyro sensor, Riverpilot, Rate of Turn display, Radar

A. Gyro sensor, Rate of Turn display, Riverpilot, Radar
Explanation
The correct order to adjust the zero of the Rate of Turn and other connected equipment is as follows: Gyro sensor, Rate of Turn display, Riverpilot, Radar. This order ensures that the gyro sensor, which provides the input for the rate of turn display, is calibrated first. Then, the rate of turn display can be adjusted accurately. The Riverpilot, which uses the rate of turn data, should be adjusted next. Finally, the radar, which may also use the rate of turn data, should be adjusted last.

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• 3.

What is a possible reason to trigger the "alarm" indication on the Rate of Turn display?

• A.

Riverpilot is turned off

• B.

Rate of Turn display is turned off

• C.

Riverpilot is on "FU/WEG" mode

• D.

Spindle wheel of the gyro sensor isn't turning due to a mechanical issue

D. Spindle wheel of the gyro sensor isn't turning due to a mechanical issue
Explanation
If the spindle wheel of the gyro sensor isn't turning due to a mechanical issue, it would result in a lack of input to the Rate of Turn display. This lack of input would trigger the "alarm" indication on the display, as it would indicate a problem with the gyro sensor's functionality.

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• 4.

What voltage do you measure between "5" and "7" on the gyro sensor when the ship does not move at all?

• A.

Less then 100 millivolts

• B.

Less then 20 millivolts

• C.

Less then 10 millivolts

• D.

More then 10 millivolts

C. Less then 10 millivolts
Explanation
When the ship does not move at all, the gyro sensor should not detect any significant change in voltage. Therefore, the voltage measured between "5" and "7" on the gyro sensor should be very low. The answer "Less than 10 millivolts" suggests that the voltage measured is expected to be less than 10 millivolts, which aligns with the explanation provided.

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• 5.

When the Riverpilot gives "Bocht" alarm, this indicates: (multiple answers possible)

• A.

• B.

The Rate of Turn display is turned off and the Riverpilot is on "Auto" mode.

• C.

The spindle wheel of the gyro is not (yet) at the correct speed.

• D.

The Rate of Turn needs adjustment.

B. The Rate of Turn display is turned off and the Riverpilot is on "Auto" mode.
C. The spindle wheel of the gyro is not (yet) at the correct speed.
Explanation
The "Bocht" alarm indicates that the Rate of Turn display is turned off and the Riverpilot is on "Auto" mode. Additionally, it suggests that the spindle wheel of the gyro is not yet at the correct speed.

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• 6.

• A.

The "gain" and "speed" potentiometers are not allowed to adjust without special test-equipment

• B.

The "test" potentiometer should be adjusted on board after installing a gyrosensor

• C.

The "speed" potentiometer is for the maximum curve of the Riverpilot

A. The "gain" and "speed" potentiometers are not allowed to adjust without special test-equipment
Explanation
The "gain" and "speed" potentiometers are not allowed to adjust without special test-equipment because these adjustments can significantly affect the performance and stability of the gyrosensor. Without proper test equipment, it is difficult to accurately measure and calibrate these potentiometers, which can lead to incorrect readings and unreliable operation of the gyrosensor. Therefore, it is important to restrict the adjustment of these potentiometers to ensure the proper functioning of the gyrosensor.

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• 7.

The adjustment at the blue arrow is used for:

• A.

To adjust the "zero" of the indicator in case the gyro sensor is not exactly zero

• B.

To adjust the "zero" of the indicator, when the indicator is turned off

• C.

To adjust the "zero" to the processor of the BasicTriplePilot

• D.

To adjust the "test" of the Rate of Turn signal

B. To adjust the "zero" of the indicator, when the indicator is turned off
Explanation
The adjustment at the blue arrow is used to adjust the "zero" of the indicator when the indicator is turned off. This means that when the indicator is not in use, the adjustment can be made to ensure that the indicator is calibrated correctly and shows zero when it is supposed to. This adjustment is necessary because the gyro sensor may not always be exactly zero, so the adjustment allows for fine-tuning and accuracy when the indicator is turned off.

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• 8.

In case of a "ROT/RUDDER" MFM display, what type of display is used?

• A.

Repeater display

• B.

Indicator display

B. Indicator display
Explanation
In a "ROT/RUDDER" MFM display, an indicator display is used. This type of display provides visual information about the rate of turn (ROT) and rudder position. It shows the current values for these parameters, allowing the pilot or operator to monitor and adjust them as needed. The indicator display typically includes a scale or dial with markings to indicate the ROT and rudder position, along with a pointer or digital readout to show the current values. This type of display is commonly used in navigation and control systems for aircraft and marine vessels.

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• 9.

In case of a "ROT" MFM Rate of Turn, what type of display is used?

• A.

Repeater display

• B.

Indicator display

B. Indicator display
Explanation
In the case of a "ROT" MFM Rate of Turn, an indicator display is used. This type of display provides a visual representation of the rate of turn, allowing the user to easily monitor and interpret the information. It typically includes a dial or gauge with markings indicating the rate of turn in degrees per minute or degrees per second. The indicator display is designed to be clear and intuitive, enabling quick and accurate readings of the rate of turn.

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• 10.

• A.

The "isozero" potentiometer is used for zero adjustment for the Riverpilot

• B.

• C.

On board ONLY adjust potentiometers "zero" and "isozero".

A. The "isozero" potentiometer is used for zero adjustment for the Riverpilot
C. On board ONLY adjust potentiometers "zero" and "isozero".
Explanation
The correct answer is that on board, only the potentiometers "zero" and "isozero" should be adjusted. The "isozero" potentiometer is specifically used for zero adjustment for the Riverpilot. This suggests that these potentiometers play a crucial role in calibrating and adjusting certain components or indicators on the onboard equipment.

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• 11.

Where is the most ideal installation location of the gyro sensor?

• A.

Wheelhouse, with a short as possible cable between Rate of Turn (interface) and Gyro sensor, mounted on a solid vibration-free foundation.

• B.

Engine room, as high as possible, preferrably above the engine.

• C.

Engine room, as high as possible, as close as possible to the longitudinal axis of the ship.

• D.

Engine room, as close as possible to the longitudinal axis of the ship, mounted on a solid vibration-free foundation at about waterlevel.

D. Engine room, as close as possible to the longitudinal axis of the ship, mounted on a solid vibration-free foundation at about waterlevel.
Explanation
The gyro sensor should be installed in the engine room, as close as possible to the longitudinal axis of the ship. This location ensures that the sensor is in a stable position and minimizes any potential vibrations or movements that could affect its accuracy. Mounting the sensor on a solid vibration-free foundation further enhances its stability. Additionally, placing the sensor at about water level helps to maintain a consistent reference point for accurate readings. Installing the sensor in this manner allows for optimal performance and reliable measurements.

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• 12.

How to adjust the "zero" and "gain" with the AlphaTrioPilot MF? (in which order)

• A.

• B.

Adjust zero on gyro sensor by measuring the 20mV/degree output voltage, adjust the zero on the display of the AlphaTrioPilot, adjust the zero in processorbox AlphaTrioPilot

• C.

Adjust zero on display AlphaTrioPilot by turning zero on gyro sensor, adjust zero in processorbox AlphaTrioPilot

• D.

C. Adjust zero on display AlphaTrioPilot by turning zero on gyro sensor, adjust zero in processorbox AlphaTrioPilot
Explanation
The correct order to adjust the "zero" and "gain" with the AlphaTrioPilot MF is to first adjust the zero on the display AlphaTrioPilot by turning zero on the gyro sensor, and then adjust the zero in the processor box AlphaTrioPilot. This order ensures that the zero is calibrated correctly on both the display and the processor box, with the gyro sensor serving as the reference point for the zero adjustment.

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• 13.

What is true about the installation of the Rate of Turn indicator and gyro sensor? (multiple answers possible) For regulation related questions see "ES-TRIN 2019 Annex 5 Navigation and information equipment 'Section II Article 1.08' & 'Section III Article 6' "

• A.

Any modification made to equipment already approved shall cause the type-approval to be forfeit.

• B.

The rate-of-turn indicator shall be located ahead of the helmsman and within their field of vision.

• C.

The sensor system shall be installed as far as possible amidships, horizontal and aligned with the ship's fore-and aft-line. The installation site shall as far as possible be free of vibration and be liable only to modest temperature variations. The indicator unit shall if possible be installed directly above the radar display.

• D.

If slave indicators are installed, they shall satisfy the requirements which apply to rate-of-turn indicators.

A. Any modification made to equipment already approved shall cause the type-approval to be forfeit.
B. The rate-of-turn indicator shall be located ahead of the helmsman and within their field of vision.
C. The sensor system shall be installed as far as possible amidships, horizontal and aligned with the ship's fore-and aft-line. The installation site shall as far as possible be free of vibration and be liable only to modest temperature variations. The indicator unit shall if possible be installed directly above the radar display.
D. If slave indicators are installed, they shall satisfy the requirements which apply to rate-of-turn indicators.
Explanation
The correct answer states that any modification made to equipment already approved will result in the forfeiture of type-approval. This means that if any changes or modifications are made to the approved equipment, it will no longer be considered valid or compliant with regulations. Additionally, the answer mentions that the rate-of-turn indicator should be located ahead of the helmsman and within their field of vision. This ensures that the helmsman has clear visibility of the indicator for accurate monitoring. The answer also states that the sensor system should be installed amidships, aligned with the ship's fore-and-aft line, and in a location free of vibration and modest temperature variations. Lastly, if slave indicators are installed, they must meet the requirements that apply to rate-of-turn indicators.

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• 14.

I want to connect Rate of Turn NMEA to the riverradar, which approved Rate of Turn indicator / approved BasicTriplePilot/AlphaTrioPilot can I use?

• A.

AlphaTurn MFM

• B.

BasicTurn 90

• C.

BasicTriplePilot

• D.

MFL AlphaTurn/Rudder combination

• E.

AlphaTrioPilot MF

A. AlphaTurn MFM
C. BasicTriplePilot
D. MFL AlphaTurn/Rudder combination
E. AlphaTrioPilot MF
Explanation
The approved Rate of Turn indicators that can be used to connect the Rate of Turn NMEA to the riverradar are AlphaTurn MFM, BasicTriplePilot, MFL AlphaTurn/Rudder combination, and AlphaTrioPilot MF.

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