Permeability in a magnetic circuit corresponds to________ in an electric circuit

Related Mcqs:

1. While comparing magnetic and electric circuits, the flux of magnetic circuit is compared with which parameter of electrical circuit ?

   A. E.m.f. B. Current C. Current density D. Conductivity...

2. 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...

3. 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...

4. 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...

5. Relative permeability of vacuum is__________?

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

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. 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...

8. An air gap is usually inserted in magnetic circuits to____________?

   A. increase m.m.f. B. increase the flux C. prevent saturation D. none of the above...

9. The unit of magnetic flux is______________?

   A. henry B. weber C. ampereturn/weber D. ampere/metre...

10. A material for good magnetic memory should have____________?

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