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Electronics and Communication Engineering - Materials and Components

Exercise : Materials and Components - Section 2
11.
Semi conducting materials are all
elements
compounds
elements or compounds
elements or mixtures
Answer: Option
Explanation:

Many compounds also show semiconducting properties.

12.
Silicon and germanium atoms combine orderly into array of atoms located in repetitive geometric pattern. This pattern is called
crystal
covalent bond
molecule
valence bond
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
In a pure sample of silicon
the number of holes and free electrons is always equal
the number of free electrons is more than the number of holes
the number of free electrons and holes is equal at low temperature
the number of free electrons is less than number of holes
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Orbital magnetic dipole moment is due to the motion of electron in its orbit around nucleus.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.

Assertion (A): ∈r can be determined experimentally by measuring the capacitance of a parallel plate capacitor with and without the dielectric.

Reason (R): Capacitance of a parallel plate capacitor = .

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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