Title  

Tesla is a unit ofTesla is a unit of
The answer is:
C. flux density


A permeable substance is oneA permeable substance is one
The answer is:
D. through which the magnetic lines of force can pass very easily


The materials having low retentivity are suitable for makingThe materials having low retentivity are suitable for making
The answer is:
B. temporary magnets


A magnetic field exists aroundA magnetic field exists around
The answer is:
D. moving charges


Ferrites are materialsFerrites are materials.
The answer is:
C. ferromagnetic


Air gap has_______eluctance as compared to iron or steel pathAir gap has_______eluctance as compared to iron or steel path
The answer is:
B. lower


The direction of magnetic lines of force isThe direction of magnetic lines of force is
The answer is:
B. from north pole to south pole


Which of the following is a vector quantity ?Which of the following is a vector quantity ?
The answer is:
B. Magnetic field intensity


The two conductors of a transmission line carry equal current I in opposite directions.The force on each conductor isThe two conductors of a transmission line carry equal current I in opposite directions.The force on each conductor isa
The answer is:
B. proportional to X


A material which is slightly repelled by a magnetic field is known asA material which is slightly repelled by a magnetic field is known as
The answer is:
B. diamagnetic material


When an iron piece is placed in a magnetic fieldWhen an iron piece is placed in a magnetic field
The answer is:
B. diamagnetic material


When an iron piece is placed in a magnetic fieldWhen an iron piece is placed in a magnetic field
The answer is:
B. the magnetic lines of force will bend away from their usual paths in order to pass through the piece


Fleming's left hand rule is used to findFleming's left hand rule is used to find
The answer is:
C. direction of force on a current car¬rying conductor in a magnetic field


The ratio of intensity of magnetisation to the magnetisation force is known asThe ratio of intensity of magnetisation to the magnetisation force is known as
The answer is:
B. susceptibility


Magnetising steel is normals difficult becauseMagnetising steel is normals difficult because
The answer is:
D. it has low permeability


The left hand rule correlates toThe left hand rule correlates to
The answer is:
D. current, magnetic field and direc¬tion of force on a conductor


The unit of relative permeability isThe unit of relative permeability is
The answer is:
D. it is dimensionless


A conductor of length L has current I passing through it, when it is placed parallel to amagnetic field. The force experienced by the conductor will beA conductor of length L has current I passing through it, when it is placed parallel to amagnetic field. The force experienced by the conductor will be
The answer is:
A. zero


The force between two long parallel conductors is inversely proportional toThe force between two long parallel conductors is inversely proportional to
The answer is:
D. distance between the conductors


Materials subjected to rapid reversal of magnetism should haveMaterials subjected to rapid reversal of magnetism should have
The answer is:
B. high permeability and low hysteresis loss

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