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Recent questions tagged feedback in amplifiers
+3
votes
1
answer
What is the effect of negative feedback on the bandwidth of an amplifier?
asked
Mar 29, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+1
vote
1
answer
Define feedback factor?
asked
Mar 17, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+1
vote
1
answer
How is the gain bandwidth product of an amplifier?
asked
Mar 10, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+2
votes
0
answers
The gain of an amplifier falls from 100 to 40 when negative feedback is applied. If the input voltage is IV,
asked
Mar 8, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+1
vote
1
answer
Name the type of feedback that is preferred for an amplifier?
asked
Feb 24, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+1
vote
0
answers
An amplifier with loop gain of 25 is, subjected to a negative feedback of 12%. If open loop gain changes by 5% due to temperature
asked
Jan 29, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+3
votes
1
answer
What is the effect of negative feedback on stability of an amplifier?
asked
Jan 27, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+1
vote
1
answer
What is meant by closed loop gain?
asked
Jan 21, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+2
votes
1
answer
Which type of negative feedback decreases both input and output impedances of an amplifier?
asked
Jan 18, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+3
votes
0
answers
Write the expressions for (i) open loop gain (ii) Closed loop gain
asked
Jan 1, 2019
in
Class 12
by
kratos
class-12
feedback in amplifiers
+1
vote
0
answers
Derive an expression for the input impedance of an amplifier with negative feedback.
asked
Dec 24, 2018
in
Class 12
by
kratos
class-12
feedback in amplifiers
+2
votes
1
answer
Why is positive feedback seldom used in amplifier?
asked
Dec 21, 2018
in
Class 12
by
kratos
class-12
feedback in amplifiers
+2
votes
1
answer
Explain positive and negative resonance effect.
asked
Dec 20, 2018
in
Class 12
by
kratos
concept of demand
chemical bonding
consumers equilibrium and demand
class-11
feedback in amplifiers
molecular structure
class-12
+3
votes
1
answer
The open loop voltage gain of an amplifier is 60 dB. A negative feedback factor 0.03 is applied to it.
asked
Dec 12, 2018
in
Class 12
by
kratos
class-12
feedback in amplifiers
+1
vote
1
answer
Wht is the basic purpose of applying negative feedback to an amplifier
asked
Dec 6, 2018
in
Class 12
by
kratos
class-12
feedback in amplifiers
+2
votes
1
answer
Define positive feedback.
asked
Dec 4, 2018
in
Class 12
by
kratos
class-12
feedback in amplifiers
+1
vote
0
answers
Derive the expression for the gain of an amplifier with negative feedback.
asked
Nov 19, 2018
in
Class 12
by
kratos
class-12
feedback in amplifiers
+2
votes
1
answer
The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be
asked
Nov 18, 2018
in
Class 12
by
kratos
semiconductor electronics
class-12
feedback in amplifiers
+1
vote
1
answer
Find the power gain of an amplifier whose power gain in 50 dB.
asked
Nov 17, 2018
in
Class 12
by
kratos
class-12
feedback in amplifiers
+2
votes
1
answer
If the bandwidth of an amplifier is 20 kHe and open-loop gain is 200 and β = 0.1
asked
Nov 2, 2018
in
Class 12
by
kratos
class-12
feedback in amplifiers
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