Ferrites are materials

Related Mcqs:

Main causes of noisy solenoid are______________?

A. strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force B. uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts C. both of above D. none of the above...

The uniform magnetic field is______________?

A. the field of a set of parallel conductors B. the field of a single conductor C. the field in which all lines of magnetic flux are parallel and equidistant D. none of the above...

The magneto-motive force is______________?

A. the voltage across the two ends of exciting coil B. the flow of an electric current C. the sum of all currents embraced by one line of magnetic field D. the passage of magnetic field through an exciting coil...

Which of the following is the unit of magnetic flux density ?

A. weber B. lumens C. tesla D. none of the above...

The use of permanent magnets is. not made in_____________?

A. magnetoes B. energy meters C. transformers D. loud-speakers...