COMPASSES

#19. A direct reading magnetic compass will be affected by? 1. Adjacent electrical equipment. 2.Ferrous metals 3. Non-ferrous metals.

• A1, 2.
• B1, 3.
• C1, 4.
• D3, 4.

#1. A direct reading magnetic compass will be affected by?

• ASoft iron.
• BHard iron.
• CAluminium.
• DSoft Iron effect hard iron, and hard iron.

#2. The purpose of the torque motor in a gyro stabilised magnetic compass is to?

• APrecess the directional gyro.
• BAdjust the selsyn stator.
• CCalibrate the pointer.
• DConvert flux valve electrical output into pointer movement.