Magnetic moment is a_____________? A. pole strength B. universal constant C. scalar quantityD. vector quantity

Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials A. circular B. triangularC. rectangular D. none of the above

A keeper is used to_____________? A. change the direction of magnetic lines B. amplify flux C. restore lost fluxD. provide a closed path for flux

The uniform magnetic field is______________? A. the field of a set of parallel conductors B. the field of a single conductorC. the field in which all lines of magnetic flux are parallel and equidistant 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 conductorC. A. and B. both in the same way 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 currentC. the sum of all currents embraced by one line of magnetic field D. the passage of magnetic field through…

A certain amount of current flows through a ring-shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil ? A.…

What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m ? A. 2 ATB. 4 AT C. 6 AT D. 10 AT

The initial permeability of an iron rod is________________? A. the highest permeability of the iron rod B. the lowest permeability of the iron rod C. the permeability at the end of the iron rodD. the permeability almost in non-magnetised state

The magnetic reluctance of a material______________? A. decreases with increasing cross sectional area of material B. increases with increasing cross-sec-tional area of material C. does not vary with increasing cross-sectional area of material D. any of the above