Exercise: Materials And Components

Questions for: Materials And Components

If the operating temperature increases by 10°C, the rate of deterioration of solid dielectric becomes
A:
double
B:
one and a half time
C:
3 times
D:
4 times
Answer: A
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Tesla is a unit of
A:
flux
B:
field strength
C:
flux density
D:
MMF
Answer: C
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The colour code on a carbon resistor is brown-black-red-gold. The value of resistance is
A:
100 Ω
B:
1000 Ω
C:
1000 Ω ± 5%
D:
1000 Ω ± 10%
Answer: C
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A rare gas has N atoms per m3. If electronic polarizability of single atom of this gas is ae, then
A:
∈r = Nae
B:
∈0∈r = Nae
C:
∈0(∈r - 1) = Nae
D:
∈0(∈r - 2) = Nae
Answer: C
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∈r is determined by the atomic structure of the dielectric.
A:
True
B:
False
C:
D:
Answer: A
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