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

Page 15 of 44
1 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 44