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ESE-2018 Achiever Study Plan Electrical Material Quiz 3
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Question 1
Molydenum has a Body-Centered Cubic, (BCC) structure with an atomic radius of 1.36 Å. Then the lattice parameter for BCC molybdenum is:
Question 2
Consider the following statements:
1) Metal conductors have more R at higher temperatures.
2) Tungsten can be used as a resistance wire.
3) A superconductive material is one which has practically zero resistance.
Which of the above statements are correct?
1) Metal conductors have more R at higher temperatures.
2) Tungsten can be used as a resistance wire.
3) A superconductive material is one which has practically zero resistance.
Which of the above statements are correct?
Question 3
Consider the following statements:
1) Type-I superconductors undergo abrupt transition to the normal state above a critical magnetic field.
2) Type-II superconductors are highly technologically useful super-conductors because the incidence of a second critical field in them is useful in the preparation of high field electromagnets.
Which of the above statements is/are correct?
1) Type-I superconductors undergo abrupt transition to the normal state above a critical magnetic field.
2) Type-II superconductors are highly technologically useful super-conductors because the incidence of a second critical field in them is useful in the preparation of high field electromagnets.
Which of the above statements is/are correct?
Question 4
A sphere of homogeneous linear dielectric material of dielectric constant ≥1 is placed in a uniform electric field E0, then the electric field E that exists inside the sphere is
Question 5
In a quantum mechanical model of the hydrogen, if the orbital quantum number is 6, find out how many substates are possible?
Question 6
Consider the following statements about diamagnetic materials and diamagnetism:
1) The materials have negative magnetic susceptibility
2) At very low temperatures diamagnetic materials are converted into paramagnetic materials
Which of the statements given above is/are correct?
1) The materials have negative magnetic susceptibility
2) At very low temperatures diamagnetic materials are converted into paramagnetic materials
Which of the statements given above is/are correct?
Question 7
The radius of the first Bohr orbit of electrons in hydrogen atom is 0.529 
. What is the radius of the second Bohr orbit in singly ionized helium atom?
. What is the radius of the second Bohr orbit in singly ionized helium atom? Question 8
A parallel plate capacitor with air between the plates has a capacitance of 8 pF. The separation between the plates is now reduced by half and the space between them is filled with a medium of dielectric constant 5. Calculate the value of capacitance of the capacitor in the second case.
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