Flashcards
electrics mag onwardss
Cards in this deck (18)
- 1how do you demagnetise a magnethit it with a hammer
degaussing with an alternating magnetic field
heating to the curie point - 2define ferro magnetismability of a magnet to become a permanent magnet
- 3define para magnetismform of magnetism that has a magnetic field higher increase
- 4define a relayan electrically operated switch
- 5define a solenoidrelay that requires high power to drive an electric motor
- 6define contactorssolenoids that can handle very high currents
- 7define the yoke of a DC generatorcylinder of cast iron which supports the pole pieces of the electromagnetic field
- 8what are pole pieces otherwise known asthe field windings
- 9define the armaturedriven by the aircraft engine and holds the windings in which the output voltage is induced
- 10define the commutatorthe voltage induced armature is AC. the commutator converts AC to DC current
- 11define the brushesthey collect the DC voltage from the moving armature and commutator
- 12define the quill driveweak point designed to shear and protect the the generator is the engine seizes
- 13define the supressorreduces the radio interference which may be caused by sparking between the brushes and the commutator
- 14what is the principle of the DC generatorto convert mechanical energy into electrical energy
- 15what is the advantage of a transistorised voltage regulator over a carbon pile voltage regulatorless maintenance
less weight
more reliable
little or no radio interference - 16DCOdifferencial cut out
- 17what is the purpose of the DCOPrevents the line contactor from energising, connecting the generator to the busbar
- 18—
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- AGK (Electrics) Flashcards on electrics mag onwardss, created by Ella Davies on 29/03/2018.
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- Ella Davies
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