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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 13
21.
In a common Emitter BJT amplifier, the maximum usable supply voltage is limited by
avalanche breakdown of Base emitter junction
collector to Base Breakdown voltage with emitter open (βVCBO)
collector Emitter Breakdown voltage with base open (βVCBO)
zener breakdown voltage of the emitter base Junction
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
High frequency oscillations can be caused by
electric coupling
magnetic coupling
ground loop
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
In order to obtain triangular pulses at the output of the circuit in the figure, the input should be.
grounded
a square wave
Triangular wave
Trigger
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The circuit in figure is
rectifier
voltage to frequency converter
frequency to voltage converter
logarithmic amplifier
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
A feedback network to be used with an amplifier to provide oscillation is tested and found to give an output of 0.124 V with a 0.5 V input. What will be the effect on output if the amplifier's gain is twice that required by the Barkhausen criterion?
Linear oscillations
Non-linear oscillations
Damped oscillations
No oscillations
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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