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mod 3 3.10 - 3.11 - 3.12
41問 • 11ヶ月前
  • Yousef Alshammary
    • 通報

    問題一覧

  • 1

    Magnetism is: the property of a material which enables it to

    attract pieces of iron

  • 2

    The two ends which are regain of concentrated lines of force are called

    the poles of the magnet

  • 3

    One of the following is not the characteristic of magnetic lines of force

    not continuous

  • 4

    Artificial magnets are

    Magnets produced from magnetic materials

  • 5

    Magnetic lines of force pass through

    all materials

  • 6

    What magnetic properties is associated with soft iron

    easily magnetized but readily demagnetized

  • 7

    Through which material will magnetic lines of force pass the most readily

    Iron

  • 8

    The degree of magnetization of a material that responds linearly to an applied magnetic field is

    permeability

  • 9

    In SI units, permeability is measured in

    henries per meter (H/m), or Newton's per ampere squared (N/A2).

  • 10

    the permeability of free space is

    4pi×10 ̄ ⁷ H/m

  • 11

    Their relative permeability of a diamagnetic is

    less than 1

  • 12

    When a ferrite core is placed inside a coil, the flux density

    increased due to the relative permeability of the core

  • 13

    The opposition that a material offers to the magnetic lines of force is

    reluctance

  • 14

    The theory of magnetism that corresponds to the direction rotation of Atom within a material is called

    Domain Theory

  • 15

    The area of the Hysteresis Loop indicates:

    energy expanded in magnetizing and demagnetizing a material

  • 16

    Magnetic field strength unit is

    amp. Turn/meter

  • 17

    The unit of flux density is the

    Tesla(T)

  • 18

    The amount of magnetic flux per unit cross sectional area is known as:

    flux density associated with magnetic field measured in tesla

  • 19

    The intensity of a magnetic field is

    directly related to the magnetic force exerted by the field

  • 20

    The relationship between absolute permeability μ and relative permeability, μr and vacuum permeability μ0 is defined by the formula

    μ = μₒ • μr

  • 21

    Relative permeability of steel is in the range

    1000-10,000

  • 22

    Fleming’s Left Hand (Motor) Rule

    The thumb indicates the direction of Motion

  • 23

    When conductor is cut by magnetic line of force, an EMF is induced

    Faraday’s Law

  • 24

    Two inductive coils are close to each other placed 90 degrees the number of flux density is

    zero

  • 25

    When a battery is connected across a coil and switch initially closed the

    back EMF maximum

  • 26

    A field twice as strong, cutting twice the number of turn will induce

    four times the voltage

  • 27

    The inductance of a coil is directly proportional to

    second power of the number of coil winding

  • 28

    The characteristics of an electrical conductor opposes change in current

    inductance

  • 29

    The inductance of a coil increases as

    the cross sectional area of the core increase

  • 30

    The time constant of the inductor is

    L/R

  • 31

    On an aircraft DC generator the pole pieces are

    electromagnets

  • 32

    the most common type used at the A/C

    is Shunt wound

  • 33

    The coil ends connected to adjacent commutator segment

    Lap winding

  • 34

    The speed of a series motor is dependent

    upon the load

  • 35

    If the heavy mechanical load is removed from a series motor the speed will

    increased and the armature current will decrease

  • 36

    If a DC shunt motor lost its residual magnetism it would

    run normally

  • 37

    Additional generator poles in a DC motors are provided

    to Compensation for the armature reaction

  • 38

    The current consumed is decreased as the

    rotation speed increased while starting in the DC motor

  • 39

    Armature reaction is when

    field excited, armature excited

  • 40

    To decrease the arcing at the brushes in a high output generators we

    add interpoles and compensating winding

  • 41

    In the series motor, the field windings, consisting of a relatively

    few turns of heavy wire

    • mod 3 3.1 - 3.2 - 3.3

    mod 3 3.1 - 3.2 - 3.3

    Yousef Alshammary · 24問 · 12ヶ月前

    mod 3 3.1 - 3.2 - 3.3

    mod 3 3.1 - 3.2 - 3.3

    24問 • 12ヶ月前
    Yousef Alshammary

    mod 3 3.4 - 3.5 - 3.6

    mod 3 3.4 - 3.5 - 3.6

    Yousef Alshammary · 39問 · 12ヶ月前

    mod 3 3.4 - 3.5 - 3.6

    mod 3 3.4 - 3.5 - 3.6

    39問 • 12ヶ月前
    Yousef Alshammary

    mod 3 3.7 - 3.8 - 3.9

    mod 3 3.7 - 3.8 - 3.9

    Yousef Alshammary · 38問 · 11ヶ月前

    mod 3 3.7 - 3.8 - 3.9

    mod 3 3.7 - 3.8 - 3.9

    38問 • 11ヶ月前
    Yousef Alshammary

    mod 3 3.13 - 3.14 - 3.15

    mod 3 3.13 - 3.14 - 3.15

    Yousef Alshammary · 39問 · 11ヶ月前

    mod 3 3.13 - 3.14 - 3.15

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    39問 • 11ヶ月前
    Yousef Alshammary

    mod 3 3.16 - 3.17 - 3.18

    mod 3 3.16 - 3.17 - 3.18

    Yousef Alshammary · 27問 · 11ヶ月前

    mod 3 3.16 - 3.17 - 3.18

    mod 3 3.16 - 3.17 - 3.18

    27問 • 11ヶ月前
    Yousef Alshammary

    mod 5 5.1 - EFIS - DAC - A429 - A629 - AND - NAND

    mod 5 5.1 - EFIS - DAC - A429 - A629 - AND - NAND

    Yousef Alshammary · 34問 · 11ヶ月前

    mod 5 5.1 - EFIS - DAC - A429 - A629 - AND - NAND

    mod 5 5.1 - EFIS - DAC - A429 - A629 - AND - NAND

    34問 • 11ヶ月前
    Yousef Alshammary

    mod 5 OR - Buses - Buf Reg - 5.10 - RL - Basic

    mod 5 OR - Buses - Buf Reg - 5.10 - RL - Basic

    Yousef Alshammary · 29問 · 11ヶ月前

    mod 5 OR - Buses - Buf Reg - 5.10 - RL - Basic

    mod 5 OR - Buses - Buf Reg - 5.10 - RL - Basic

    29問 • 11ヶ月前
    Yousef Alshammary

    mod 5 Single - multimund - optical - 5.11 - LCD - 5.12 - PCB - 5.13

    mod 5 Single - multimund - optical - 5.11 - LCD - 5.12 - PCB - 5.13

    Yousef Alshammary · 38問 · 11ヶ月前

    mod 5 Single - multimund - optical - 5.11 - LCD - 5.12 - PCB - 5.13

    mod 5 Single - multimund - optical - 5.11 - LCD - 5.12 - PCB - 5.13

    38問 • 11ヶ月前
    Yousef Alshammary

    mod 5 Safety - software - 5.14 - HIRF - HIRF EMI

    mod 5 Safety - software - 5.14 - HIRF - HIRF EMI

    Yousef Alshammary · 26問 · 11ヶ月前

    mod 5 Safety - software - 5.14 - HIRF - HIRF EMI

    mod 5 Safety - software - 5.14 - HIRF - HIRF EMI

    26問 • 11ヶ月前
    Yousef Alshammary

    mod 5 5.15

    mod 5 5.15

    Yousef Alshammary · 25問 · 11ヶ月前

    mod 5 5.15

    mod 5 5.15

    25問 • 11ヶ月前
    Yousef Alshammary

    mod 5 Numbering System

    mod 5 Numbering System

    Yousef Alshammary · 16問 · 11ヶ月前

    mod 5 Numbering System

    mod 5 Numbering System

    16問 • 11ヶ月前
    Yousef Alshammary

    7.1

    7.1

    Yousef Alshammary · 18問 · 11ヶ月前

    7.1

    7.1

    18問 • 11ヶ月前
    Yousef Alshammary

    7.2

    7.2

    Yousef Alshammary · 11問 · 11ヶ月前

    7.2

    7.2

    11問 • 11ヶ月前
    Yousef Alshammary

    7.3 - 7.4

    7.3 - 7.4

    Yousef Alshammary · 32問 · 11ヶ月前

    7.3 - 7.4

    7.3 - 7.4

    32問 • 11ヶ月前
    Yousef Alshammary

    7.5

    7.5

    Yousef Alshammary · 9問 · 11ヶ月前

    7.5

    7.5

    9問 • 11ヶ月前
    Yousef Alshammary

    7.6 - 7.8

    7.6 - 7.8

    Yousef Alshammary · 8問 · 11ヶ月前

    7.6 - 7.8

    7.6 - 7.8

    8問 • 11ヶ月前
    Yousef Alshammary

    7.9

    7.9

    Yousef Alshammary · 10問 · 11ヶ月前

    7.9

    7.9

    10問 • 11ヶ月前
    Yousef Alshammary

    7.10

    7.10

    Yousef Alshammary · 12問 · 11ヶ月前

    7.10

    7.10

    12問 • 11ヶ月前
    Yousef Alshammary

    7.11

    7.11

    Yousef Alshammary · 7問 · 11ヶ月前

    7.11

    7.11

    7問 • 11ヶ月前
    Yousef Alshammary

    6.3

    6.3

    Yousef Alshammary · 46問 · 11ヶ月前

    6.3

    6.3

    46問 • 11ヶ月前
    Yousef Alshammary

    問題一覧

  • 1

    Magnetism is: the property of a material which enables it to

    attract pieces of iron

  • 2

    The two ends which are regain of concentrated lines of force are called

    the poles of the magnet

  • 3

    One of the following is not the characteristic of magnetic lines of force

    not continuous

  • 4

    Artificial magnets are

    Magnets produced from magnetic materials

  • 5

    Magnetic lines of force pass through

    all materials

  • 6

    What magnetic properties is associated with soft iron

    easily magnetized but readily demagnetized

  • 7

    Through which material will magnetic lines of force pass the most readily

    Iron

  • 8

    The degree of magnetization of a material that responds linearly to an applied magnetic field is

    permeability

  • 9

    In SI units, permeability is measured in

    henries per meter (H/m), or Newton's per ampere squared (N/A2).

  • 10

    the permeability of free space is

    4pi×10 ̄ ⁷ H/m

  • 11

    Their relative permeability of a diamagnetic is

    less than 1

  • 12

    When a ferrite core is placed inside a coil, the flux density

    increased due to the relative permeability of the core

  • 13

    The opposition that a material offers to the magnetic lines of force is

    reluctance

  • 14

    The theory of magnetism that corresponds to the direction rotation of Atom within a material is called

    Domain Theory

  • 15

    The area of the Hysteresis Loop indicates:

    energy expanded in magnetizing and demagnetizing a material

  • 16

    Magnetic field strength unit is

    amp. Turn/meter

  • 17

    The unit of flux density is the

    Tesla(T)

  • 18

    The amount of magnetic flux per unit cross sectional area is known as:

    flux density associated with magnetic field measured in tesla

  • 19

    The intensity of a magnetic field is

    directly related to the magnetic force exerted by the field

  • 20

    The relationship between absolute permeability μ and relative permeability, μr and vacuum permeability μ0 is defined by the formula

    μ = μₒ • μr

  • 21

    Relative permeability of steel is in the range

    1000-10,000

  • 22

    Fleming’s Left Hand (Motor) Rule

    The thumb indicates the direction of Motion

  • 23

    When conductor is cut by magnetic line of force, an EMF is induced

    Faraday’s Law

  • 24

    Two inductive coils are close to each other placed 90 degrees the number of flux density is

    zero

  • 25

    When a battery is connected across a coil and switch initially closed the

    back EMF maximum

  • 26

    A field twice as strong, cutting twice the number of turn will induce

    four times the voltage

  • 27

    The inductance of a coil is directly proportional to

    second power of the number of coil winding

  • 28

    The characteristics of an electrical conductor opposes change in current

    inductance

  • 29

    The inductance of a coil increases as

    the cross sectional area of the core increase

  • 30

    The time constant of the inductor is

    L/R

  • 31

    On an aircraft DC generator the pole pieces are

    electromagnets

  • 32

    the most common type used at the A/C

    is Shunt wound

  • 33

    The coil ends connected to adjacent commutator segment

    Lap winding

  • 34

    The speed of a series motor is dependent

    upon the load

  • 35

    If the heavy mechanical load is removed from a series motor the speed will

    increased and the armature current will decrease

  • 36

    If a DC shunt motor lost its residual magnetism it would

    run normally

  • 37

    Additional generator poles in a DC motors are provided

    to Compensation for the armature reaction

  • 38

    The current consumed is decreased as the

    rotation speed increased while starting in the DC motor

  • 39

    Armature reaction is when

    field excited, armature excited

  • 40

    To decrease the arcing at the brushes in a high output generators we

    add interpoles and compensating winding

  • 41

    In the series motor, the field windings, consisting of a relatively

    few turns of heavy wire