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Electronics and Communication Engineering - Materials and Components

Exercise : Materials and Components - Section 2
36.
In carbon resistor colour code, the third band is red. It indicates
two zeros
three zeros
multiplier is 0.01
multiplier is 0.1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Rochelle salt is a ferroelectric material.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Paramagnetic materials have permanent magnetic dipoles but interaction between neighbouring dipoles is negligible.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.

Assertion (A): If difference between static and optical dielectric constant is high, the mechanical compressiblity of that material is also high.

Reason (R): For soft ions, ionic polarization per unit field is higher than that of hard ions.

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.
40.

Assertion (A): In Figure, the intercept of the line on y-axis is equal to N (ae + ai), where N is number of atoms/m3, ae is electronic polarizability and ai is ionic polarizability.

Reason (R): ae and ai are independent of temperature.

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:

The intercept on y-axis equals N (ae + ai).

This intercept is constant because ae and ai are independent of temperature.

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