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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 11
16.
In order to achieve good stabilization in potential divider method current I1 through R1 and R2 should be
I1 > 20 IB
I1 > 15 IB
I1 < 5 IB
I1 > 10 IB
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
A sample of N type semiconductor has electron density of 6.25 x 108/cm2 at 300 K. If the intrinsic concentration of carriers in this sample is 2.5 x 1013/cm3 at this temperature, the hole density works out to be
106/cm3
108/cm3
1010/cm3
10l2/cm3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Addition of 0.3 to 3.5% silicon to iron
increases the electrical resistivity of iron
decreases the electrical resistivity of iron
does not change electrical resistivity of iron
silicon can't be added with iron
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
A bistable multivibrator
has no stable state
has one stable state
has two stable state
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Transconductance indicates the
control of output voltage by input voltage
control of output current by input voltage
control of input voltage by output current
control of input current by input voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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