%_Which of the following properties is not necessarily desirable for the material for transformer core?_%

%_Which of the following properties is not necessarily desirable for t

1.	%_Which of the following properties is not necessarily desirable for the material for transformer core?_%
A.	Low hysteresis loss
B.	High permeability
C.	High thermal conductivity
D.	Adequate mechanical strength
Answer» D. Adequate mechanical strength