Vocabulary

Question 1

The force that causes the setting up of flux lines in a magnetic circuit?

Answer 1

Magnetomotive force

Question 2

Like poles

Answer 2

Repel

Question 3

Another name for a flux line?

Answer 3

Maxwell

Question 4

This represents current flowing away from you

Answer 4

Cross

Question 5

Magnetizing force is measured in Amp-turns/X?

Answer 5

Meter

Question 6

What stands the acronym DMM for?

Answer 6

Digital Multi-Meter

Question 7

When a wire is wound into a helical coil to create a stronger magnetic field, the coil is referred to as a?

Answer 7

Solenoid

Question 8

A device used to measure high resistance

Answer 8

Megger

Question 9

Magnetic lines of force represent X along their length which tends to make them as short as possible.

Answer 9

Tension

Question 10

This Greek letter is used to identify permeability. It is also used to indicate micro.

Answer 10

MU

Question 11

Direction of magnetic field OUTSIDE a magnet

Answer 11

North to South

Question 12

Unit of measurement for flux density.

Answer 12

Tesla

Question 13

The most accurate type of DMM (Digital Multimeter)

Answer 13

True RMS; it can measure Alternating current (AC) or AC voltage.

Question 14

A device used to measure the amount of power used in a circuit.

Answer 14

Wattmeter

Question 15

The amount of magnetizing force required to remove residual magnetism.

Answer 15

Coercive force

Question 16

Unlike poles ?

Answer 16

Attract

Question 17

The knee on a BH graph

Answer 17

Saturation

Question 18

This represents current coming out towards you.

Answer 18

Dot

Question 19

A device used when storing a magnet that provides an easy path for the magnetic flux.

Answer 19

Keeper

Question 20

The measure of the amount of flux per unit cross-section of the magnetic circuit.

Answer 20

Flux density

Question 21

When using the left hand rule for coil, your fingers point in the direction of X?

Answer 21

Electron flow

Question 22

The temperature at which the alignment of the magnetic domains is lost.

Answer 22

Curie temperature

Question 23

One hundred million flux lines (10^8)

Answer 23

1Weber

Question 24

A method used for demagnetizing a material.

Answer 24

Vibration

Question 25

This device is placed in series with the field poles to control the current, there by controlling the flux density.

Answer 25

Rheostat

Question 26

The spreading out of flux lines in an air gap

Answer 26

Fringing

Question 27

Greek for ‘lagging behind’

Answer 27

Hysteresis

Question 28

Unit of measurement for the magnetomotive force

Answer 28

Ampere-Turns

Question 29

Total number of flux lines in a magnet

Answer 29

Magnetic flux

Question 30

Pole where magnetic emerge from a magnet

Answer 30

North

Question 31

The amount of flux density remaining in the magnetic material after the magnetizing force has been removed.

Answer 31

Residual magnetism

Question 32

A type of ammeter that does not require the circuit to be opened.

Answer 32

Clampon

Question 33

Magnetic lines of force always form X?

Answer 33

Complete loops

Question 34

Magnetic lines of force cannot intersect or cross, but must always form X loops.

Answer 34

Individual

Question 35

Direction of magnetic field inside a magnet

Answer 35

South to North

Question 36

Magnetic lines of force possess what?

Answer 36

A direction

Question 37

An electromagnetic swith

Answer 37

Relay; it consist of a coil of wire, a movable armature, and one or more sets of contacts.

Question 38

Magnetic lines of force always tend to arrange themselves in such manner that the X number of lines of force are set up.

Answer 38

Maximum

Question 39

The property that opposes the setting up of flux lines is known as

Answer 39

Reluctance

Question 40

The measure of the ease with which flux may be set up in a unit length and cross section of an area

Answer 40

Permeability