A. Soft iron
B. Stainless steel
C. Hardened steel
D. None of the above
Related Mcqs:
- The commonly used material for shielding or screening magnetism is____________?
A. copper
B. aluminium
C. soft iron
D. brass - Magnetism of a magnet can be destroyed by_____________?
A. heating
B. hammering
C. by inductive action of another magnet
D. by all above methods - The magnetism left in the iron after exciting field has been removed is known as____________?
A. permeance
B. residual magnetism
C. susceptance
D. reluctance - Materials subjected to rapid reversal of magnetism should have______________?
A. large area oiB-H loop
B. high permeability and low hysteresis loss
C. high co-ercivity and high retentivity
D. high co-ercivity and low density - Which of the following is a ferromagnetic material ?
A. Tungsten
B. Aluminium
C. Copper
D. Nickel - he retentivity (a property) of material is useful for the construction of_______________?
A. permanent magnets
B. transformers
C. non-magnetic substances
D. electromagnets - he retentivity (a property) of material is useful for the construction of__________?
A. permanent magnets
B. transformers
C. non-magnetic substances
D. electromagnets - A material which is slightly repelled by a magnetic field is known as_____________?
A. ferromagnetic material
B. diamagnetic material
C. paramagnetic material
D. conducting material - How does the magnetic compass needle behave in a magnetic field ?
A. It assures a position right angle to magnetic field
B. It starts rotating
C. It assures a position which follows a line of magnetic flux
D. None of the above - When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon____________?
A. resistance of the coil
B. motion of the magnet
C. number of turns of the coil
D. pole strength of the magnet
