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The covers of electrical machines are made of
(A) Soft magnetic materials. (B) Hard magnetic materials.
(C) Super conductors. (D) Semiconductors.
Ans:
The covers of electrical machines are made of soft magnetic materials.
(a) Consider the circuit of the noninverting amplifier in Figure, including an ideal op amp. Obtain an expression for the voltage gain of the overall circuit. (b) Let R i = 10
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