Vocabulary Flashcards
The force that causes the setting up of flux lines in a magnetic circuit?
Magnetomotive force
Like poles
Repel
Another name for a flux line?
Maxwell
This represents current flowing away from you
Cross
Magnetizing force is measured in Amp-turns/X?
Meter
What stands the acronym DMM for?
Digital Multi-Meter
When a wire is wound into a helical coil to create a stronger magnetic field, the coil is referred to as a?
Solenoid
A device used to measure high resistance
Megger
Magnetic lines of force represent X along their length which tends to make them as short as possible.
Tension
This Greek letter is used to identify permeability. It is also used to indicate micro.
MU
Direction of magnetic field OUTSIDE a magnet
North to South
Unit of measurement for flux density.
Tesla
The most accurate type of DMM (Digital Multimeter)
True RMS; it can measure Alternating current (AC) or AC voltage.
A device used to measure the amount of power used in a circuit.
Wattmeter
The amount of magnetizing force required to remove residual magnetism.
Coercive force
Unlike poles ?
Attract
The knee on a BH graph
Saturation
This represents current coming out towards you.
Dot
A device used when storing a magnet that provides an easy path for the magnetic flux.
Keeper
The measure of the amount of flux per unit cross-section of the magnetic circuit.
Flux density
When using the left hand rule for coil, your fingers point in the direction of X?
Electron flow
The temperature at which the alignment of the magnetic domains is lost.
Curie temperature
One hundred million flux lines (10^8)
1Weber
A method used for demagnetizing a material.
Vibration
This device is placed in series with the field poles to control the current, there by controlling the flux density.
Rheostat
The spreading out of flux lines in an air gap
Fringing
Greek for ‘lagging behind’
Hysteresis
Unit of measurement for the magnetomotive force
Ampere-Turns
Total number of flux lines in a magnet
Magnetic flux
Pole where magnetic emerge from a magnet
North
The amount of flux density remaining in the magnetic material after the magnetizing force has been removed.
Residual magnetism
A type of ammeter that does not require the circuit to be opened.
Clampon
Magnetic lines of force always form X?
Complete loops
Magnetic lines of force cannot intersect or cross, but must always form X loops.
Individual
Direction of magnetic field inside a magnet
South to North
Magnetic lines of force possess what?
A direction
An electromagnetic swith
Relay; it consist of a coil of wire, a movable armature, and one or more sets of contacts.
Magnetic lines of force always tend to arrange themselves in such manner that the X number of lines of force are set up.
Maximum
The property that opposes the setting up of flux lines is known as
Reluctance
The measure of the ease with which flux may be set up in a unit length and cross section of an area
Permeability
