compass()
第1题:
Compass deviation is caused by ______.
A.magnetism from the earth’s magnetic field
B.misalignment of the compass
C.magnetism within the vessel
D.a dirty compass housing
第2题:
If a magnetic compass is not affected by any magnetic field other than the Earth’s which statement is TRUE?______.
A.Compass error and variation are equal
B.Compass north will be true north
C.Variation will equal deviation
D.There will be no compass error
第3题:
Magnetic heading differs from compass heading by______.
A.compass error
B.true heading
C.variation
D.Deviation
第4题:
Compass should be put on the ().
第5题:
Compass error and variation are equal
Compass north will be true north
Variation will equal deviation
There will be no compass error
第6题:
remains aligned with compass north
also turns to starboard
first turns to starboard then counterclockwise to port
turns counterclockwise to port
第7题:
the deviation has been offset by the variation
there is something wrong with the compass
the compass is being influenced by nearby metals
there is no deviation on that heading
第8题:
reduce the variation as much as possible
reduce the deviation as much as possible
reduce the magnetic dip as much as possible
allow the compass bowl to swing freely on its gimbals
第9题:
The readings are too low (small numerically) and the amount of the error must be added to the compass to obtain true
The readings are too low and the amount of the error must be subtracted from the compass to obtain true
The readings are too high (large numerically) and the amount of the error must be added to the compass to obtain true
The readings are too high and the amount of the error must be subtracted from the compass to obtain true
第10题:
set it on the centerline of the boat
apply the correction for compass error
keep metal objects away from it
All of the above
第11题:
the compass heading is in line with the lubber's line
there is no lost motion in the gimbal rings
no change of heading by compass is observed if you raise and lower the heeling magnet
the gimbal rings do not strike the compass frame when they are tilted
第12题:
varies depending upon the bearing used
is the angular difference between magnetic north and compass north
is published on the compass rose on most nautical charts
is the angular difference between geographic and magnetic meridians
第13题:
Deviation is the angle between the ______.
A.true meridian and the axis of the compass card
B.true meridian and the magnetic meridian
C.magnetic meridian and the axis of the compass card
D.axis of the compass card and the degaussing meridian
第14题:
Magnetic compass deviation______.
A.varies depending upon the bearing used
B.is the angular difference between magnetic north and compass north
C.is published on the compass rose on most nautical charts
D.is the angular difference between geographic and magnetic meridians
第15题:
音域(Compass)
第16题:
magnetism from the earth's magnetic field
misalignment of the compass
magnetism within the vessel
a dirty compass housing
第17题:
true meridian and the axis of the compass card
true meridian and the magnetic meridian
magnetic meridian and the axis of the compass card
axis of the compass card and the degaussing meridian
第18题:
Similize
Clock
Synchronize
Position
第19题:
worn gears in the compass housing
magnetism from the earth's magnetic field
magnetism within the vessel
lack of oil in the compass bearings
第20题:
Compass error is negligible at or near the earth's magnetic poles
It does not have to be checked as often
It is reliable due to it's essential simplicity
All points on the compass rose are readily visible
第21题:
like magnetic poles attract
unlike magnetic poles repel
unlike poles attract
the poles of the compass line up with the geographic poles of the earth
第22题:
第23题:
zero
equal to variation
eliminated by adjusting the compass
constant at any geographical location
第24题:
before correcting for any deviation
after correcting for variation
after adjusting the fore-and-aft and athwartships permanent magnets
before the quadrantal correctors are placed on the compass