Direct Reading Of Magentic Flashcards
1
Q
A
A magnet is mounted on a pivot ,floating in a liquid inside the compass casing.
2
Q
Properties of the compass
A
~Horizontality: ability of the compass to remain horizontal
~sensitivity: sensitivity for the earth magnetic field (more magnets )
~aperiodicity:or dead beat describes need for the magnet assemble to settle Down quickly after a disturbance such as turbulence or manoeuvres
-filling with damping oil
-reduce weight and aids buoyoncy
3
Q
Fluid in th ecompass
A
~ramin liquid
~should not expand or contract excessively
~compass
Low viscotiy t allow ~must be transparent
4
Q
ACCELERATION
A
North hm
ACCELERATE NORTH
DECELERATE SOUTH
ANDS
5
Q
TURNS
A
NUNOS
UNDERSHOOT NORTH
OVERSHOOT SOUTH