
Hysteresis loss and eddy current are used in
A) Induction heating of steel
B) Dielectric heating
C) Induction heating of brass
D) None of the above
Answer
491.1k+ views
Hint: Induction heating is a fast, efficient, and non-contact method for heating electrically conductive materials or semiconducting materials. Hysteresis is a phenomenon that is seen in ferromagnetic substances. It depends on the history of the ferromagnetic substance. According to Lenz’s law, the direction of this induced current is such that it opposes the change which produced it.
Complete step by step answer:
When a ferromagnetic substance is kept in a magnetic field the substance gets magnetized due to induction. In this when the magnetic field intensity (H) changes the magnetic induction (B) does not change in accordance with the change in magnetic field intensity i.e. the magnetic induction also depends on the past history of the substance. Due to this, the magnetic induction lags behind the magnetizing field.
This phenomenon of the lagging of the magnetic induction of the substance behind the magnetizing field is known as hysteresis.
A magnetic field passing through a metallic object changes due to this a current is induced in the metallic object. This induced current is known as eddy current.
Hysteresis loss occurs in ferromagnetic elements and eddy currents are produced due to change in the magnetic field flowing through the material. Hence they will be used in the induction heating of steel.
$\therefore $ Hysteresis loss and eddy current are used in the induction heating of steel. Hence, option (A) correct.
Note:
Option C is easily eliminated as Brass is not a magnetic substance.
The following are the Uses of eddy current.
1) They are used in electric brakes.
2) They are also used in speedometer.
3) Nowadays they are also used in induction heating and induction motors.
Complete step by step answer:
When a ferromagnetic substance is kept in a magnetic field the substance gets magnetized due to induction. In this when the magnetic field intensity (H) changes the magnetic induction (B) does not change in accordance with the change in magnetic field intensity i.e. the magnetic induction also depends on the past history of the substance. Due to this, the magnetic induction lags behind the magnetizing field.
This phenomenon of the lagging of the magnetic induction of the substance behind the magnetizing field is known as hysteresis.
A magnetic field passing through a metallic object changes due to this a current is induced in the metallic object. This induced current is known as eddy current.
Hysteresis loss occurs in ferromagnetic elements and eddy currents are produced due to change in the magnetic field flowing through the material. Hence they will be used in the induction heating of steel.
$\therefore $ Hysteresis loss and eddy current are used in the induction heating of steel. Hence, option (A) correct.
Note:
Option C is easily eliminated as Brass is not a magnetic substance.
The following are the Uses of eddy current.
1) They are used in electric brakes.
2) They are also used in speedometer.
3) Nowadays they are also used in induction heating and induction motors.
Recently Updated Pages
Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Biology: Engaging Questions & Answers for Success

Master Class 12 Physics: Engaging Questions & Answers for Success

Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Trending doubts
The probability that a leap year will have only 52 class 12 maths CBSE

Describe the poetic devices used in the poem Aunt Jennifers class 12 english CBSE

And such too is the grandeur of the dooms We have imagined class 12 english CBSE

What does the god that failed refer to class 12 english CBSE

Which country did Danny Casey play for class 12 english CBSE

Draw a labelled sketch of the human eye class 12 physics CBSE
