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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 18
26.
When negative feedback is used the fractional changes in closed loop gain are desensitized by the factor (1 + Avβ)
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Which of the following statement about JFET is true?
In a JFET, gate and source have opposite polarity with respect to drain irrespective of the type of FET
In its schematic symbol for JFET, the arrow always points to p-type material
In an n-channel JFET, the channel is the narrowest under zero gate bias condition
In JFET, gate source cut off voltage is numerically equal to the pinch off voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Which of the following is the common feature between FETs and bipolars?
Have low input impedance
Have low voltage gain
Are difficult to bias
None of them
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The circuit shown in the figure is that of
non-inverting amplifier
Inverting amplifier
an oscillator
Schmitt trigger
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
The current through common emitter resistor of a differential amplifier is called
differential current
emitter current
ground current
tail current
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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