| Q-1 In what
situation magnetic therapy should not be used? |
Ans. Pregnant women, and a person fitted with
electro medical devices like insulin tube, pacemaker should not use
magnetic therapy.
----------------------------------------------------------------------------------------------
| Q-2 Which
type of magnets can be used at very high temperature? |
Ans. Samarium cobalt magnet is an ideal magnet that
can be used in high temperature.
----------------------------------------------------------------------------------------------
| Q-3 Which
magnet is susceptible to corrosion and why? |
Ans. The magnet most susceptible to corrosion is
NdFeB magnet. This is because it contain ferrous material and ferrous
material is prone to rust. To prevent the rusting often the magnet is
coated with nickel, zinc or gold.
----------------------------------------------------------------------------------------------
| Q-4 Where is
the north pole of the magnet? |
Ans. Pole that aligns itself with geographic north
is the north pole of the magnet.
----------------------------------------------------------------------------------------------
| Q-5 Which is
the strongest ferromagnetic material? |
Ans. Neodymium magnets are the strongest
ferromagnetic materials which are used in various industrial and
commercial applications.
----------------------------------------------------------------------------------------------
| Q-6 What is
electromagnetism? |
Ans. Electromagnetism is a study of
electricity and magnetism. The principle on which electromagnets work is
that electric current through a wire generates a magnetic field. The
magnetic field exert the force which makes the metal objects stick to
permanent magnets.
----------------------------------------------------------------------------------------------
| Q-7 What
are ceramic magnets? |
Ans. Ceramic magnets consist of iron oxide and
barium/strontium carbonate. These magnets are made from pressing and
sintering. These magnets are brittle and require diamond wheels if
grinding is necessary.
----------------------------------------------------------------------------------------------
| Q-8 What
are Injection Molded magnets? |
Ans. Injection molded magnets are manufactured from
resin and powders of different magnetic materials allowing parts to be
made in an injection molding process. The molding process allows for the
manufacture of more complex shapes. These magnets are usually lower in
magnetic strength as there are limitations to the degree of loading.
----------------------------------------------------------------------------------------------
| Q-9 What
are flexible magnets? |
Ans. Flexible magnets are very similar to injection
molded magnets but difference lie in the fact that they are manufactured
in the form of sheets and flat strip.
----------------------------------------------------------------------------------------------
| Q-10 What
is magnetic therapy? |
Ans. The use of magnets for treating various
physical disorders is called as magnetic therapy. The magnets increase
the flow of blood and generates heat thereby providing relief in various
joint pains, arthritis, cervical, spondylitis, headache etc.
----------------------------------------------------------------------------------------------
| Q-11 What
is the relation between temperature and the permanent magnetic
behavior? |
Ans. The magnetic material starts to lose its
strength permanently if it is operated at curie temperature. Also if the
magnet is used above Tmax temperature it will effect its power and
magnetic strength.
