Electronics and Communication Engineering - Materials and Components

6. 

Resistivity of rubber is about

A. 102 Ω-m
B. 10-2 Ω-m
C. 5 x 108 Ω m
D. 5 x 1012 Ω-m

Answer: Option D

Explanation:

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7. 

An iron specimen has µr = 1000 when B = 0.3 T. If B = 0.35 T, µr

A. will be 1000
B. will be less than 1000
C. will be more than 1000
D. may be more or less than 1000

Answer: Option D

Explanation:

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8. 

Which solid dielectric has highest temperature limit?

A. E
B. H
C. C
D. F

Answer: Option C

Explanation:

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9. 

Permeability is analogous to

A. resistivity
B. retentivity
C. conductivity
D. coercivity

Answer: Option C

Explanation:

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10. 

The colour code on a carbon resistor is green-blue-yellow. The tolerance is

A. ± 5%
B. ± 10%
C. ± 20%
D. ± 30%

Answer: Option C

Explanation:

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