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

Related Mcqs:

1. Permeability in a magnetic circuit corresponds to________ in an electric circuit

   A. resistance B. resistivity C. conductivity D. conductance...

2. 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...

3. 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...

4. The unit of magnetic flux is______________?

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

5. 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...

6. Laminated cores, in electrical machines, are used to reduce____________?

   A. copper loss B. eddy current loss C. hysteresis loss D. all of the above...

7. Silicon steel is used in electrical machines because it has_____________?

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

8. 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...

9. 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...

10. A material for good magnetic memory should have____________?

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