What is the reluctance of a magnetic path having a length of 2x 10^-3m and crosssectional area of 2.5 x 10^-3 m^2?
6366 A, t/Wb
6000 A, t/Wb
8x10^-3 A, t/Wb
0.8 A, t/Wb
Correct Answer :
A. 6366 A, t/Wb
Related Questions
The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of magnetizing force?
5 × 10^-5 N/Wb
500 × 10^3 N/Wb
4 × 10^7N/Wb
4 × 10^7N/Wb
Formed when there exist distant electronic interactions between (opposite) charges present in the neighboring atoms or molecules.
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Covalent bond
Metallic bond
Van der Waals bond
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Shielding
Limiting
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large
narrow
very large
very narrow
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Low permeability
Moderate permeability
High permeability
Which of the following is a natural magnet?
Steel
Magnesia
Lodestone
S oft iron
A commercial alloy of aluminum nickela and iron with cobalta copper and titanium added to produce about 12 grades.
Alnico
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Aluminum
Constantan
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becomes sixteen times
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becomes two times
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1.1 x 10^-6
1.1 x 10^7
1.1 x 10^-8
1.1 x 10^-9
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Amount of current
Current divided by the resistance
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Permalloy
Hipernik
Manganin
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Electric field
Electromagnetic field
Free Space Field
Electric potential is a _______ quantity.
scalar
phasor
vector
variable
What is the SI unit of conductance?
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Mhos
Ohms
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6000 turns
600 turns
167 turns
67turns
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A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
5 Wb
0.5 Tesia of flux density
5x 10^-5 Wb of flux
5000 Tesia of flux density
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Hardened steel
Cobalt steel
Soft iron
Tungsten steel
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Ionic
Covalent
Metallic
Van der Waals
A substance that attracts pieces iron
Conductor
Semiconductor
Magnet
All of the above
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a semiconductor
a conductor
an insulator
a semi-insulator
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45 o
90o
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free
valence
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Helix rule
End rule
Cork screw rule
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1 newton/coulomb
1 newton-meter
1 volt/second/ampere
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Permittivity
Reluctivity
Conductivity
Permeability
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Edison effect
Skin effect
Half effect
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8.854 F/m
8.854 × 10^-12 mF/m
8.854× 10^-12 F/m
8.854 × 10^-12 F/m
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decreases
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