Hi friends, these are some of the multiple choice questions on electrical and magnetic properties. These are some of the basic questions which are asked in previous competitive papers check out and comment...
1) Paramagnetic substance has a relative permeability of
A) Slightly less than one
B) Equal to one
C) Slightly equal to one
D) Very much greater than one
Ans:C
2) A group of magnetically aligned atoms is called
A) Range
B) Lattice
C) Domain
D) Crystal
Ans:C
3) The force between two magnetic poles varies with the distance between them. The variation is to the square of that distance.
A) Equal
B) Greater than
C) Directly proportional
D) Inversely proportional
Ans:D
4) Permeability means
A) The conductivity of the material for magnetic lines of force
B) The magnetization test in the material after exciting field has been removed
C) The strength of an electromagnet
D) The strength of the permanent magnet
Ans:A
5) ..............is an electromagnet with its core in the form of a close magnetic ring.
A) Solenoid
B) Paraboloid
C) Toroid
D) Cycloid
Ans:C
6) A magnetic material losses its ferromagnetic properties at a point called
A) Curie temperature
B) Inferred absolute temperature
C) Room temperature
D) Absolute temperature
Ans:A
7) Small voltages generated by a conductor with current in an external magnetic field.
A) Skin effect
B) Magnetic effect
C) Hall Effect
D) Flywheel Effect
Ans:C
8) The emission of electrons from hot bodies is called
A) Radiation effect
B) Edison Effect
C) Skin effect
D) Half effect
Ans:B
9) The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization when subjected to a dc magnetic field.
A) Wartheim effect
B) Wiedemann effect
C) Wiegand effect
D) Edison effect
Ans:C
10) An effect which is generally used in the gaussmeter to measure flux density.
A) Skin effect
B) Magnetic effect
C) Hall effect
D) Flywheel effect
Ans:C
1) Paramagnetic substance has a relative permeability of
A) Slightly less than one
B) Equal to one
C) Slightly equal to one
D) Very much greater than one
Ans:C
2) A group of magnetically aligned atoms is called
A) Range
B) Lattice
C) Domain
D) Crystal
Ans:C
3) The force between two magnetic poles varies with the distance between them. The variation is to the square of that distance.
A) Equal
B) Greater than
C) Directly proportional
D) Inversely proportional
Ans:D
4) Permeability means
A) The conductivity of the material for magnetic lines of force
B) The magnetization test in the material after exciting field has been removed
C) The strength of an electromagnet
D) The strength of the permanent magnet
Ans:A
5) ..............is an electromagnet with its core in the form of a close magnetic ring.
A) Solenoid
B) Paraboloid
C) Toroid
D) Cycloid
Ans:C
6) A magnetic material losses its ferromagnetic properties at a point called
A) Curie temperature
B) Inferred absolute temperature
C) Room temperature
D) Absolute temperature
Ans:A
7) Small voltages generated by a conductor with current in an external magnetic field.
A) Skin effect
B) Magnetic effect
C) Hall Effect
D) Flywheel Effect
Ans:C
8) The emission of electrons from hot bodies is called
A) Radiation effect
B) Edison Effect
C) Skin effect
D) Half effect
Ans:B
9) The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization when subjected to a dc magnetic field.
A) Wartheim effect
B) Wiedemann effect
C) Wiegand effect
D) Edison effect
Ans:C
10) An effect which is generally used in the gaussmeter to measure flux density.
A) Skin effect
B) Magnetic effect
C) Hall effect
D) Flywheel effect
Ans:C
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