Electrical Engineering materials are classified into four classes: Conductors, Semiconductors, Insulators, and Magnetic materials.

MCQ on Electric Materials

Packing fraction of the simple cube is:

1. 0.35
2. 0.48
3. 0.52
4. 0.67

Correct answer: 3. 0.52

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Superconducting metal in the superconducting state has a relative permeability of:

1. One
2. Zero
3. Negative
4. Two

Correct answer: 2. Zero

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Bohr Magneton is unit of:

1. Momentum
2. Magnetic moment
3. Plank mass
4. Virtual work

Correct answer: 2. Magnetic moment