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Engineering Materials in EE
Which of following material has least value of dielectric constant?
Oil.
Glass.
Ceramics.
Paper.
Oil.
Glass.
Ceramics.
Paper.
Answer
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Engineering Materials in EE
According to the Bohr model, an electron gains or losses energy only by
being completely removed from an atom.
jumping from one atom to another atom.
jumping from one allowed orbit to another.
moving faster or slower in an allowed orbit.
being completely removed from an atom.
jumping from one atom to another atom.
jumping from one allowed orbit to another.
moving faster or slower in an allowed orbit.
Answer
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Engineering Materials in EE
The number of rings in the Bohr model of any element is determined by what?
Row number on periodic table.
Column number on periodic table.
Atomic number.
Atomic mass.
Row number on periodic table.
Column number on periodic table.
Atomic number.
Atomic mass.
Answer
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Engineering Materials in EE
Why diamond is very hard ?
Because of high melting point
Because of covalent solid
None of these
Because of large cohesive energy
Because of high melting point
Because of covalent solid
None of these
Because of large cohesive energy
Answer
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Engineering Materials in EE
The permeability of iron can be increased by
reducing carbon percentage.
increasing carbon percentage.
alloying with cobalt.
purifying it.
reducing carbon percentage.
increasing carbon percentage.
alloying with cobalt.
purifying it.
Answer
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Engineering Materials in EE
How many valence electrons would be found in an atom with the atomic number of 51?
8.
none of above.
51.
5.
8.
none of above.
51.
5.
Answer
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