### Category: Electronics Engineering

Latest multiple choice questions with answers for electronics engineering students.

## Electronics Engineering MCQs [Quiz 30]

Q1. When the relative permeability of a material is slightly less than 1, it is called                     material.
A. diamagnetic
B. ferromagnetic
C. paramagnetic
D. non-magnetic

Q2. When the relative permeability of a material is slightly more than 1, it is called                    material.
A. diamagnetic
B. ferromagnetic
C. paramagnetic
D. non-magnetic

Q3. Which of the following is a diamagnetic material?
A. Aluminum
B. Silver
C. Air
D. Cobalt

Q4. Which of the following is a paramagnetic material?
A. Carbon
B. Bismuth
C. Copper
D. Oxygen

Q5. The greater percentage of materials is                     .
A. diamagnetic
B. paramagnetic
C. ferromagnetic
D. non-magnetic

Q6. When the relative permeability of a material is much greater than 1, it is called                        material.
A. diamagnetic
B. ferromagnetic
C. paramagnetic
D. non-magnetic

Q7. The flux density in an air-cored coil is 10^-3 Wb/m^2. With a cast iron core of relative permeability 100 inserted, the flux density will become
A. 10^-3 Wb/m^2
B. 10^-2 Wb/m^2
C. 10^3 Wb/m^2
D. 0.1 Wb/m^2

Q8. At/m is a unit of
A. mmf
B. magnetic force
C. reluctance
D. magnetic flux density

Q9. The direction of force o a current carrying conductor placed in a magnetic field can be found by
A. Cork screw rule
B. Fleming’s left hand rule
C. Fleming’s right hand rule
D. using a compass

Q10. When a current carrying conductor is placed in a magnetic field, the maximum force will act on the conductor when the conductor is at an angle of                      to the magnetic field.
A. 45o
B. 60o
C. 30o
D. 90o

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