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...
1) Calculate the permeability (in T/A. t/m) of a magnetic material that has a relative permeability of 300
A) 3.78 X10^-4
B) 3.78 X10^-5
C) 3.78 X 10^-3
D) 3.78 X10^-6
Ans:A
2) Calculate the flux density that will be produced by the field intensity of 2000 a. t/m for a permeability of 126 x 10^-6 T/A.t/m
A) 0.252 G
B) 0.252 x 10^-2 T
C) 0.252 T
D) 0.252 x 10^-2 G
Ans:C
3) How many tums are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
A) 6000 turns
B) 600 turns
C) 167 turns
D) 67 turns
Ans:C
4) A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ohms Calculate the number of ampere turns?
A) 100
B) 50
C) 300
D) 600
Ans:C
5) What determines the atomic number of an element?
A) The number of protons
B) The number of electrons
C) The number of neutrons
D) The number of neutrons and protons
Ans:A
6) One of the solid structures in which the position of the atoms or ions are predetermined
A) Crystalline solid
B) Amorphous solid
C) Poly crystalline solid
D) Poly- amorphous solid
Ans:A
7) Mmf in a magnetic circuit corresponds to in an electric circuit
A) Emf
B) Voltage drop
C) Electric Field Intensity
D) Potential gradient
Ans:A
8) What solid has no defined crystal structure except perhaps in the arrangement of the nearest neighboring atoms or ions‘?
A) Crystalline
B) Amorphous
C) Polycrystalline
D) Poly- amorphous
Ans:B
9) Amorphous solid is also called
A) Crystalline
B) Non Crystalline
Ans:B
10) A principle that states that only two electrons with different spins are allowed to exist in a given orbit
A) Bohr’s principle
B) Pauli exclusion principle
C) Avogadro’s principle
D) Coulomb’s principle
Ans:B
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1) Calculate the permeability (in T/A. t/m) of a magnetic material that has a relative permeability of 300
A) 3.78 X10^-4
B) 3.78 X10^-5
C) 3.78 X 10^-3
D) 3.78 X10^-6
Ans:A
2) Calculate the flux density that will be produced by the field intensity of 2000 a. t/m for a permeability of 126 x 10^-6 T/A.t/m
A) 0.252 G
B) 0.252 x 10^-2 T
C) 0.252 T
D) 0.252 x 10^-2 G
Ans:C
3) How many tums are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
A) 6000 turns
B) 600 turns
C) 167 turns
D) 67 turns
Ans:C
4) A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ohms Calculate the number of ampere turns?
A) 100
B) 50
C) 300
D) 600
Ans:C
5) What determines the atomic number of an element?
A) The number of protons
B) The number of electrons
C) The number of neutrons
D) The number of neutrons and protons
Ans:A
6) One of the solid structures in which the position of the atoms or ions are predetermined
A) Crystalline solid
B) Amorphous solid
C) Poly crystalline solid
D) Poly- amorphous solid
Ans:A
7) Mmf in a magnetic circuit corresponds to in an electric circuit
A) Emf
B) Voltage drop
C) Electric Field Intensity
D) Potential gradient
Ans:A
8) What solid has no defined crystal structure except perhaps in the arrangement of the nearest neighboring atoms or ions‘?
A) Crystalline
B) Amorphous
C) Polycrystalline
D) Poly- amorphous
Ans:B
9) Amorphous solid is also called
A) Crystalline
B) Non Crystalline
C) Poly crystalline
D) HomogeneousAns:B
10) A principle that states that only two electrons with different spins are allowed to exist in a given orbit
A) Bohr’s principle
B) Pauli exclusion principle
C) Avogadro’s principle
D) Coulomb’s principle
Ans:B
If you like my post please share it with your friends and subscribe to latest updates.. If you have doubts you can start new topic on forum and start discussion with our readers..
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