51. The ratio of the permeability of material to the permiabiity of air or vacuum.
A. Relative permeability
B. Relative permittivity
C. Relative conductivity
D. Relative reluctivity
52. Permeance is analogous to
A. Conductance
B. Reluctance
C. Admittance
D. Resistance
53. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing
force is known as
A. Retentivity
B. Reluctivity
C. Resistivity
D. Conductivity
54. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing
force is called
A. Leftover magnetism
B. Hysteresis
C. Residual magnetism
D. Coercivity
55. The amount of magnetizing force to counter balance the residual magnetism of a
magnetic material is referred to as
A. Reluctivity
B. Susceptivity
C. Coercivity
D. Retentivity
,56. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
A. Leakage flux
B. Leakage current
C. Leakage coefficient
D. Leakage factor
57. Defined as the number of lines per unit area through any substance in a plane at right angles to
the lines of force
A. Flux
B. Flux lines
C. Flux density
D. Flux intensity
58. Defined as the flux density produced in it due to its own induced magnetism
A. Magnetic field intensity
B. Electric field intensity
C. Electromagnetic field intensity
D. Intensity magnetization
59. The force acting on a unit n- pole placed at that point is called
A. Magnetic field intensity
B. Electric field intensity
C. Electromagnetic field intensity
D. Intensity magnetization
60. The ratio between the intensity of magnetization produced in a substance to the magnetizing
force producing it
A. Magnetic Reluctivity
B. Magnetic Resistivity
C. Magnetic susceptibility
D. Magnetic conductivity
, 61. The lagging effect between flux density of the material and the magnetizing force applied
A. Permeance
B. Eddy current
C. Hysteresis
D. Reluctance
A. Relative permeability
B. Relative permittivity
C. Relative conductivity
D. Relative reluctivity
52. Permeance is analogous to
A. Conductance
B. Reluctance
C. Admittance
D. Resistance
53. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing
force is known as
A. Retentivity
B. Reluctivity
C. Resistivity
D. Conductivity
54. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing
force is called
A. Leftover magnetism
B. Hysteresis
C. Residual magnetism
D. Coercivity
55. The amount of magnetizing force to counter balance the residual magnetism of a
magnetic material is referred to as
A. Reluctivity
B. Susceptivity
C. Coercivity
D. Retentivity
,56. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
A. Leakage flux
B. Leakage current
C. Leakage coefficient
D. Leakage factor
57. Defined as the number of lines per unit area through any substance in a plane at right angles to
the lines of force
A. Flux
B. Flux lines
C. Flux density
D. Flux intensity
58. Defined as the flux density produced in it due to its own induced magnetism
A. Magnetic field intensity
B. Electric field intensity
C. Electromagnetic field intensity
D. Intensity magnetization
59. The force acting on a unit n- pole placed at that point is called
A. Magnetic field intensity
B. Electric field intensity
C. Electromagnetic field intensity
D. Intensity magnetization
60. The ratio between the intensity of magnetization produced in a substance to the magnetizing
force producing it
A. Magnetic Reluctivity
B. Magnetic Resistivity
C. Magnetic susceptibility
D. Magnetic conductivity
, 61. The lagging effect between flux density of the material and the magnetizing force applied
A. Permeance
B. Eddy current
C. Hysteresis
D. Reluctance
