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WorksheetsFeedback Amplifiers
Total questions: 10
Worksheet time: 5mins
Another name for positive feedback
degenerative feedback
regenerative feedback
inverse feedback
The regenerative feedback amplifier overall gain is given by
Af = A/(1+Aβ)
Af = 1-Aβ
Af = A/(1-Aβ)
Af = 1+Aβ
When current feedback (negative) is applied to an amplifier, its output impedance....
is decreased
is increased
remains the same
none of the above
The degenerative feedback amplifier overall gain is given by
Af = A/(1+Aβ)
Af = 1+Aβ
Af = A/(1-Aβ)
Af = 1-Aβ
The output resistance of voltage shunt feedback Amplifier
decreases
increases
constant
none
The term
β A is called feedbackvalue
factor
ratio
None
Negative Feedback is frequently used in ...............................circuits
Amplifier
Permanent
microprocessor
All the Above
Negative feedback in an Amplifier
lowers its lower 3 dB frequency
raises its upper 3 dB frequency
increases its bandwidth
All the above
Feedback in an amplifier always helps to
control its output
increase its gain
decrease input impedence
stabilize its gain
Positive feedback increases amplifier gain
true
false
insufficient data
