Hi friends, these are some of the multiple choice questions on electrical and magnetic properties. These are some of the basic questions which are asked in previous competitive papers check out and comment...
l) 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
Ans:A
2)When the relative permeability of a material is slightly more than l, it is called material.
A) diamagnetic
B) ferromagnetic
C) paramagnetic
D) non-magnetic
Ans:C
3) Which of the following is a diamagnetic material?
A) Aluminum
B) Silver
C) Air
D) Cobalt
Ans:C
4) Which of the following is a paramagnetic material?
A) Carbon
B) Bismuth
C) Copper
D) Oxygen
Ans:D
5) The greater percentage of materials is .
A) diamagnetic
B) paramagnetic
C) ferromagnetic
D) non-magnetic
Ans:B
6) When the relative permeability of a material is much greater than l, it is called material.
A) diamagnetic
B) Ferromagnetic
C) paramagnetic
D) non-magnetic
Ans:B
7) 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) l0^-2Wb/m^2
C) 10^3 Wb/m^2
D) 0.1 Wb/m^2
Ans:D
8) At/m is a unit of
A) mmf
B) magnetic force
C) reluctance
D) magnetic flux density
Ans:B
9) The direction of force 0 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
Ans:B
10) When 21 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) 45°
B) 60°
C) 30°
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l) 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
Ans:A
2)When the relative permeability of a material is slightly more than l, it is called material.
A) diamagnetic
B) ferromagnetic
C) paramagnetic
D) non-magnetic
Ans:C
3) Which of the following is a diamagnetic material?
A) Aluminum
B) Silver
C) Air
D) Cobalt
Ans:C
4) Which of the following is a paramagnetic material?
A) Carbon
B) Bismuth
C) Copper
D) Oxygen
Ans:D
5) The greater percentage of materials is .
A) diamagnetic
B) paramagnetic
C) ferromagnetic
D) non-magnetic
Ans:B
6) When the relative permeability of a material is much greater than l, it is called material.
A) diamagnetic
B) Ferromagnetic
C) paramagnetic
D) non-magnetic
Ans:B
7) 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) l0^-2Wb/m^2
C) 10^3 Wb/m^2
D) 0.1 Wb/m^2
Ans:D
8) At/m is a unit of
A) mmf
B) magnetic force
C) reluctance
D) magnetic flux density
Ans:B
9) The direction of force 0 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
Ans:B
10) When 21 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) 45°
B) 60°
C) 30°
D) 90°
Ans:D
Ans:D
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