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Recent questions tagged amplifier

1 answer 22 views

State the need of multistage amplifier. Draw frequency response of R-C coupled amplifier.

asked Sep 5, 2018 by Shimroz123
1 answer 8 views

Define gain and bandwidth of an amplifier.

asked Sep 5, 2018 by Shimroz123
1 answer 18 views

Draw diagram of class A push-pull amplifier and explain its operation. 

asked Sep 5, 2018 by Shimroz123
1 answer 23 views

State the need of cascade amplifier and draw circuit diagram of 2-stage direct coupled amplifier.

asked Sep 5, 2018 by Shimroz123
1 answer 9 views

Compare RC coupled, transformer coupled and direct coupled amplifier based on four points.

asked Sep 5, 2018 by Shimroz123
1 answer 52 views

Draw the single stage RC coupled amplifier circuit and explain its’s operation.

asked Sep 4, 2018 by Shimroz123
1 answer 6 views

List the advantages of RC coupled amplifier.

asked Sep 4, 2018 by Shimroz123
1 answer 5 views

State the need of cascade amplifier.

asked Sep 4, 2018 by Shimroz123
1 answer 58 views

A differential amplifier has a differential gain of 28000 and CMRR is 60 dB. What will be the value of common mode gain? A) Ac = 0.125 B) Ac = 0.33 C) Ac = 3 D) Ac = 28 

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
1 answer 26 views

The unity gain bandwidth of an inverting amplifier is 10 MHz What would be the bandwidth if the gain is increased to 10 V/V? A) 100 MHz B) 1 MHz C) 10 MHz D) 1 kHz 

asked Jun 18, 2018 in Amplifier by Shimroz123
1 answer 18 views

What is the efficiency of Class-B amplifier?  A) 68.50% B) 78.50% C) 88.50% D) 98.50%

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
1 answer 22 views

Which one of the following is another name for common-collector amplifier?  A) Source follower B) Collector follower C) Base follower D) Emitter follower

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
1 answer 30 views

The voltage gains of the amplifier with and without feedback are 20 and 100 respectively. The percentage of negative feedback would be

asked May 3, 2018 in Power Electronics by Shimroz123
1 answer 67 views

An amplifier has input power of 2 microwatts. The power gain of the amplifier is 60 dB. The output power will be

asked May 3, 2018 in Power Electronics by Shimroz123
1 answer 97 views

A differential amplifier has a differential gain of 20,000, CMRR : 80 dB. The common mode gain is given by

asked May 3, 2018 in Power Electronics by Shimroz123
1 answer 34 views

An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is  (1) 141 (2) 92.3 (3) 9.23 (4) 1.41

asked May 1, 2018 in Power Electronics by Shimroz123
1 answer 72 views

The voltage gain of a common -source JFET amplifier depends up on its  (1) Input impedance (2) Amplification factor (3) Dynamic drain resistance (4) Drain load resistance

asked Apr 30, 2018 in Power Electronics by Shimroz123
1 answer 24 views

The gain of an ideal amplifier must be

asked Apr 26, 2018 in Control System by Shimroz123
1 answer 13 views

The effect of a finite gain of an operational amplifier used in an integrator is that (A) it would not integrate (B) the slope of the output will vary with time (C) the final value of the output voltage will reduce (D) there will be instability in the circuit

asked Apr 26, 2018 in Electronics Engineering by Shimroz123
0 answers 19 views

What type of biasing is used in CE amplifier?

asked Mar 22, 2018 in Transistor Biasing by Quiz
0 answers 32 views

What is a BJT amplifier?

asked Mar 19, 2018 in Bipolar Junction Transistor by Zeeshan
0 answers 21 views

How can BJT be used as an amplifier?

asked Mar 19, 2018 in Bipolar Junction Transistor by Zeeshan
0 answers 27 views

What do you mean by frequency response of an amplifier?

asked Mar 10, 2018 in Analog electronics circuits by Quiz
0 answers 22 views

What is the advantage of differential amplifier?

asked Mar 10, 2018 in Analog electronics circuits by Quiz
0 answers 13 views

What is the power amplifier?

asked Mar 10, 2018 in Analog electronics circuits by Quiz
0 answers 14 views

What is the use of differential amplifier?

asked Mar 10, 2018 in Analog electronics circuits by Quiz
0 answers 22 views

How does an operational amplifier work?

asked Mar 10, 2018 in Analog electronics circuits by Quiz
0 answers 16 views

What is the meaning of operational amplifier?

asked Mar 10, 2018 in Analog electronics circuits by Quiz
0 answers 179 views

How does negative feedback reduces distortion in an amplifier?

asked Mar 10, 2018 in Electronics Engineering by Quiz
0 answers 17 views

What is stability in an amplifier?

asked Mar 10, 2018 in Electronics Engineering by Quiz
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