If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be____________?

Related Mcqs:

1. In a magnetic material hysteresis loss takes place primarily due to___________?

   A. rapid reversals of its magnetisation B. flux density lagging behind magnetising force C. molecular friction D. it high retentivity...

2. Hysteresis loss least depends on____________?

   A. volume of material B. frequency C. steinmetz coefficient of material D. ambient temperature...

3. A ferrite core has less eddy current loss than an iron core because_______________?

   A. ferrites have high resistance B. ferrites are magnetic C. ferrites have low permeability D. ferrites have high hysteresis...

4. Those magnetic materials are best suited for making armature and transformer cores which have ________ permeability and ________ hystersis loss

   A. high, high B. low, high C. high, low D. low, low...

5. The relative permeability of a ferromagnetic material is_____________?

   A. less than one B. more than one C. more than 10 D. more than 100 or 1000...

6. The property of a material which opposes the creation of magnetic flux in it is known as_____________?

   A. reluctivity B. magnetomotive force C. permeance D. reluctance...

7. A material for good magnetic memory should have____________?

   A. low hysteresis loss B. high permeability C. low retentivity D. high retentivity...

8. Relative permeability of vacuum is__________?

   A. 1 B. 1 H/m C. 1/4JI D. 4n x 10-‘ H/m...

9. The unit of retentivity is____________?

   A. weber B. weber/sq. m C. ampere turn/meter D. ampere turn...

10. Point out the wrong statement. Magnetic leakage is undesirable in electric machines because it___________?

    A. lowers their power efficiency B. increases their cost of manufacture C. leads to their increased weight D. produces fringing...