A ferromagnetic material of volume 10^{-3} , | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The energy dissipated per unit volume per cycle is equal to the area of the hysteresis loop. Total energy dissipated per second is given by the fo

Vedclass · Accepted Answer

$1.19 	imes 10^{-3} \, 	ext{cal}$

Vedclass · Answer

(C) The energy dissipated per unit volume per cycle is equal to the area of the hysteresis loop. Total energy dissipated per second is given by the formula: $E = V 	imes A 	imes n 	imes t$. Given: Volume $V = 10^{-3} \, m^3$ Area of hysteresis loop $A = 0.1 \, J/m^3$ Frequency $n = 50 \, Hz$ Time $t = 1 \, 	ext{sec}$ Substituting the values: $E = 10^{-3} 	imes 0.1 	imes 50 	imes 1 = 5 	imes 10^{-3} \, J$. To convert Joules to calories, we use the conversion factor $1 \, 	ext{cal} \approx 4.2 \, J$, so $1 \, J \approx 0.2388 \, 	ext{cal}$. $E = 5 	imes 10^{-3} 	imes 0.2388 \approx 1.194 	imes 10^{-3} \, 	ext{cal}$. Thus, the energy dissipated is $1.19 	imes 10^{-3} \, 	ext{cal}$.

$A$ ferromagnetic material of volume $10^{-3} \, m^3$ is subjected to a magnetic field with a frequency of $50 \, Hz$. The area of the hysteresis loop is $0.1 \, M.K.S. \, \text{units}$. Calculate the energy dissipated in $1 \, \text{sec}$.

Similar Questions

The energy dissipated per unit volume per cycle in the hysteresis of an iron sample of mass $10 \, kg$ is $200 \, J \, m^{-3} \, cycle^{-1}$. The density of iron is $7500 \, kg \, m^{-3}$. The loss of energy per hour at $50 \, cycle \, s^{-1}$ is: (in $J$)

$A$ bar magnet has a coercivity of $4 \times 10^3 \, A/m$. It is desired to demagnetize it by inserting it inside a solenoid $12 \, cm$ long and having $60$ turns. The current that should be sent through the solenoid is... (in $, A$)

The figure illustrates how $B$,the magnetic flux density inside a sample of unmagnetised ferromagnetic material,varies with $B_0$,the external magnetic flux density in which the sample is kept. For the sample to be suitable for making a permanent magnet:

The figure illustrates how $B$,the flux density inside a sample of unmagnetised ferromagnetic material,varies with $B_0$,the magnetic flux density in which the sample is kept. For the sample to be suitable for making a permanent magnet:

The magnet can be completely demagnetized by

Vedclass Test Series

Exam Paper Generator

Online Exam Module