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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 11
21.
The pinch-off voltage is the drain voltage on the shorted gate drain curve above which the drain current becomes
almost negligible
very high
almost constant
highly variable
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Which of the following plot can be used to show the input volt-ampere characteristics of a common-emitter configuration?
VBE versus iB for constant values of VCE
VCE versus iC for constant values of IB
VCE versus iC for constant values of IE
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
A transconductance amplifier has
high input impedance and low output impedance
low input impedance and high output impedance
high input and output impedance
low input and output impedance
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The signal input to a given amplifier is made up of 100 mΩ signal power and 1 mΩ noise power. The amplifier contributes an additional 100 mΩ of noise and has a power gain of 20 dB. The output signal-to-noise ratio is
100
50
10
5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
In order to protect a MOSFET against damage from any stray voltage at the gate
grounding rings are provided
terminals are shorted
source terminal is earthed during transit
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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