The use of permanent magnets is. not made in_____________?

Related Mcqs:

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...

The change of cross-sectional area of conductor in magnetic field will affect______________?

A. reluctance of conductor B. resistance of conductor C. A. and B. both in the same way D. none of the above...

Unit for quantity of electricity is_____________?

A. ampere-hour B. watt C. joule D. coulomb...

The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields______________?

A. meter is surrounded by strong magnetic fields B. a soft iron shielding is used C. a plastic shielding is provided D. a shielding of anon-magnetic material is used...

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...