If Bmax is the maximum flux density, eddy current loss is proportional to Bmax B

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Question
If B_max is the maximum flux density, eddy current loss is proportional to
Options
A. B_max
B. B^1.6_max
C. B²_max
D. B³_max

Correct Answer

B_max

Materials and Components problems

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1. As the viscosity of a liquid increases, the relaxation time
Options
A. remains constant
B. increases
C. decreases
D. first decreases then increases

2. At room temperature the number of conducting electrons in an intrinsic semiconductor
Options
A. is almost equal to the number of valence electrons
B. is about half the number of valence electrons
C. is small as compared to the number of valence electrons
D. is a very small fraction of the number of valence electrons

4. Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called
Options
A. Debye temperature
B. Curie temperature
C. Neel temperature
D. Transition temperature

7. If the radius of electron cloud around the nucleus of a rare gas atom is R, the electronic polarizability of the atom is porportional to
Options
A. R
B. R²
C. R³
D.

10. An atom of a rare gas is placed is an electric field E. Then
Options
A. the nucleus will be shifted in the direction of E by an amount which is proportional to E.
B. the nucleus will not be shifted.
C. the nucleus will be shifted in the direction of E by an amount which is independent of E.
D. the nucleus will be shifted in a direction opposite to that of E.

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