Properties of Ferrimagnetic Materials MCQ’s

Electronics & Communication Engineering RF & Microwave Circuit Design

This set of RF & Microwave Circuit Design Multiple Choice Questions & Answers (MCQs) focuses on “Properties of Ferrimagnetic Materials”.

1. A microwave network can be called non reciprocal only if it contains anisotropic materials like ferrite materials.
a) True
b) False

2. This is not an example of anisotropic material:
a) Yttrium aluminum garnet
b) Aluminum
c) Cobalt
d) Silicon

3. Example of a non reciprocal device:
a) Branch line coupler
b) Wilkinson coupler
c) Magic-T hybrid
d) Circulator

4. The magnetic properties of a material are due to the existence of ___________
a) Electrons in atoms
b) Electric dipole moment
c) Magnetic dipole moment
d) None of the mentioned

5. Lande’s factor for all ferromagnetic materials is in the range of 0 to 1.
a) True
b) False

6. A permanent magnet is made by placing the magnetic material in a strong magnetic field.
a) True
b) False

7. ___________ is a measure of the relative contributions of the orbital moment and the spin moment to the total magnetic moment.
a) Lande’s factor
b) Gibbs factor
c) Newton’s ratio
d) None of the mentioned

8. The variation of magnetic moment of a ferromagnetic material with applied bias field is linear.
a) True
b) False

9. The operating point of a permanent magnet is in the:
a) First quadrant
b) Second quadrant
c) Third quadrant
d) Fourth quadrant

10. After demagnetization of a magnetic material, the residual magnetization retained in the magnetic material is called:
a) Remanence
b) Residue
c) Retardation
d) None of the mentioned

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