flux valve
A flux valve detects the horizontal of the earth’s magnetic field
1) the flux valve is made of a pair of soft iron bars
2) the information can be used by a “flux gate” compass or a directional gyro
3) the flux gate valve signal comes from the error detector
4) the accuracy on the value of the magnetic field indication is less than 0.5%
Which of the following combinations contains all of the correct statements?
a) 2, 4
b) 1, 2, 4
c) 1, 4
d) 1, 2
a) marked correct. Why not (b)?
can some also pls explain the meaning of "the accuracy on the value of the magnetic field indication is less than 0.5%"
this seems pretty inaccurate
thanks