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Electronics and Communication Engineering - Materials and Components

Exercise : Materials and Components - Section 8
1.
The number of protons in a silicon atom are
4
8
12
14
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The fact that domains exhibits spontaneous magnetisation is
first hypothesis is of Curie
second hypothesis is of Weiss
Curie-Weiss law
Boltzmann's statistics
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.

Assertion (A): Hall effect is used to determine whether the semi- conductor is p or n type.

Reason (R): Under the influence of field, holes and electrons move in opposite direction.

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.
4.
The most important set of specifications of transformer oil include
dielectric strength and viscosity
dielectric strength and flash point
viscosity and flash point
flash point and viscosity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Nickel is a non-magnetic material.
True
False
Answer: Option
Explanation:

Nickel is ferromagnetic material.

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