WorksheetsGyroscope and Gyrocompass Quiz
Total questions: 30
Worksheet time: 15mins
A free gyroscope has three degrees of freedom. What does this mean in practice?
It can resist movement in all three spatial planes.
Its rotor can spin, tilt, and drift independently.
It is unaffected by the Earth's rotation and gravity.
It requires three separate gimbals for operation.
The tendency of a gyroscope's spin axis to move perpendicular to an applied force is known as what?
Gyroscopic Inertia
Ballistic Deflection
Precession
Gimballing Error
Which natural force is utilized by a gyrocompass to make its spin axis settle horizontally?
Earth's Magnetic Field
Centrifugal Force
Gravity
Coriolis Effect
A significant advantage of a gyrocompass over a magnetic compass is its ability to...
function without any electrical power supply.
be completely immune to all types of errors.
find true north and resist ferromagnetic materials.
provide heading information during power loss.
The component that receives and indicates true direction from the master gyrocompass is the...
Control Panel.
Voltage Regulator.
Repeater Compass.
Amplifier Panel.
What is the primary cause of Speed Error in a gyrocompass?
The vessel's acceleration in an East-West direction.
The rolling and pitching of the vessel in heavy seas.
The fact the compass only moves East or West with the ship.
A malfunction in the motor-generator's voltage output.
How is Tangent Latitude error, found in gyros with mercury ballistics, typically corrected?
By adjusting the ship's speed and course.
By realigning the gyroscope's gimbal rings.
By offsetting the lubber's line internally.
By recalibrating the repeater compasses.
Ballistic Deflection error occurs primarily due to a change in what?
The vessel's East-West speed component.
The vessel's magnetic environment.
The vessel's North-South speed component.
The temperature of the mercury ballistics.
What phenomenon is used by a ring laser gyroscope to determine the rate of rotation?
Conservation of angular momentum.
Precession of a spinning mass.
Optical path difference.
Magnetic field variation.
The "phantom" element in a gyrocompass system is crucial because...
it houses the spinning rotor and keeps it balanced.
it moves with the ship while the rotor points north.
it converts the ship's DC supply to AC power.
it records the ship's course on a paper strip.
According to IMO standards, which ship is required to carry a gyrocompass?
All ships engaged in international voyages.
All ships of 500 gross tonnage and upwards.
All high-speed craft regardless of tonnage.
All ships equipped with magnetic compasses.
The property of Gyroscopic Inertia refers to a spinning rotor's tendency to...
move at a right angle to an applied force.
maintain its plane of rotation indefinitely.
align itself with the Earth's magnetic field.
oscillate in an elliptical path over time.
What is the primary purpose of the mercury ballistics system in a gyrocompass?
To provide a damping force for oscillations.
To generate electrical power for the rotor.
To record the ship's heading continuously.
To stabilize the compass during vessel roll.
A Gimballing Error is minimized by ensuring the gyrocompass's outer gimbal ring is...
perfectly balanced with counterweights.
installed aligned with the ship's fore-and-aft line.
isolated from the ship's electrical system.
filled with mercury to dampen movement.
Which error is a temporary oscillation caused by rapid changes in course or speed?
Speed Error
Ballistic Damping Error
Quadrantal Error
Tangent Latitude Error
For a gyrocompass to be north-seeking, its spin axis must trace an ellipse that is damped. How long does one such ellipse typically take to complete?
Exactly 60 minutes (one hour).
Approximately 24 minutes.
Approximately 84 minutes.
Varies with the ship's latitude.
The component that converts the ship's DC supply to AC for the compass equipment is the...
Voltage Regulator.
Control Panel.
Amplifier Panel.
Motor Generator.
What is the fundamental principle that allows a spinning gyroscope in gimbals to maintain its orientation?
Newton's First Law of Motion
Conservation of Angular Momentum
The Coriolis Effect
Archimedes' Principle
On a northerly course, the Speed Error of a gyrocompass will typically deflect the indicated north in which direction?
Easterly
Westerly
Northerly
Southerly
Quadrantal Error can be caused by the vessel's roll displacing the...
plane of the meridian.
center of the phantom ring.
apparent vertical axis.
electrical transmission signals.
The Master Gyrocompass discovers true north, while the Repeater Compasses...
calculate position using GPS data.
indicate direction received from the master.
control the follow-up system for the master.
regulate voltage for the entire system.
The error that is dependent on a vessel's speed, course, and latitude is the...
Gimballing Error.
Ballistic Deflection Error.
Speed Error.
Quadrantal Error.
In a pendulous gyrocompass, what is the role of the weight added to the bottom of the vertical ring?
To dampen the oscillations of the gyrosphere.
To cause the system to seek the meridian.
To keep the spin axis perfectly horizontal.
To counteract the effects of precession.
The term "gyroscope" is derived from Greek words meaning...
"true direction finder".
"spinning wheel viewer".
"revolution to view".
"earth rotation measure".
Which error is corrected by using a second gyroscope called a floating ballistics?
Speed Error
Ballistic Damping Error
Quadrantal Error
Tangent Latitude Error
The Alarm Unit in a gyrocompass system is designed to indicate...
a deviation from the true meridian.
a failure of the ship's power supply.
a misalignment of the gimbal rings.
a need for routine maintenance.
For a gyrocompass to settle on true north, its operation depends on gyroscopic inertia, precession, the Earth's rotation, and...
the Earth's magnetic field.
gravity.
centrifugal force.
solar radiation.
The component that makes a continuous record of a ship's manoeuvring is the...
Control Panel.
Voltage Regulator.
Course Recorder.
Amplifier Panel.
What is the primary function of the Amplifier Panel in a gyrocompass system?
To maintain a constant voltage supply.
To control the electrical follow-up system.
To convert DC power to AC power.
To indicate failures in the system.
A key difference between a simple gyroscope and a gyrocompass is that the gyrocompass is designed to...
have only two degrees of freedom.
be entirely independent of gravity.
seek and maintain true north.
function without electrical power.
