MCQ
The narrowest hysterisis loop is for:
  • A
    Cobalt steel
  • B
    Almico
  • Soft magnetic material
  • D
    Stainless steel

Answer

Correct option: C.
Soft magnetic material

A narrow hysteresis loop implies a small amount of dissipated energy. This occurs as a result of its small area and therefore more frequently repeated reversals of applied magnetising force. Soft magnetic are materials used in devices that require alternating magnetic fields have these narrow hysteresis shapes.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A radio transmitter radiates 1 kW power at a wavelength 198.6 metres. How many photons does it emit per second
An $\alpha $-particle is accelerated through a potential difference of $200\,V$. The increase in its kinetic energy is.......$eV$
The energy stored in a condenser of capacity C which has been raised to a potential V is given by
In a transformer, number of turns in the primary coil are $140$ and that in the secondary  coil are $280$. If current in primary is $4A$, then that in coil secondary is.....$A$
What happens to the inductive reactance and the current in a purely inductive circuit if the frequency is halved ?
In figure two parallel infinitely long current carrying wires are shown. If resultant magnetic field at point $A$ is zero. Then determine current $I.$ (in $A$)
If two protons are moving with speed $v=4.5 \times 10^{5} \,m / s$ parallel to each other then the ratio of electrostatic and magnetic force between them
The negative Zn pole of a Daniel cell, sending a constant current through a circuit, decreases in mass by 0.13g in 30 minutes. If the electrochemical equivalent of Zn and Cu are 32.5 and 31.5 respectively, the increase in the mass of the positive Cu pole in this time is
The magnifying power of an astronomical telescope is $8$ and the distance between the two lenses is $54\, cm$. The focal length of eye lens and objective lens will be respectively
Two capacitors with capacitance values $C _1=2000 \pm 10 pF$ and $C_2=3000 \pm 15 pF$ are connected in series. The voltage applied across this combination is $V=5.00 \pm 0.02 V$. The percentage error in the calculation of the energy stored in this combination of capacitors is . . . . . .