Negative feed back reduces - - - - in amplifiers

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Negative feed back reduces Distortion in amplifiers 

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Negative feedback is used in audio amplifiers to

Last Answer : Negative feedback is used in audio amplifiers to Reduce distortion.

What are feed back amplifiers?

Description : What are feed back amplifiers?

Last Answer : Amplifiers which uses feed back principle is called as feed back amplifiers.

Amplifiers are coupled to - - - -

Last Answer : Amplifiers are coupled to Increase gain

If three stage amplifiers has individual stage gain of 10 db, 5 db & 12 db then the total gain

Last Answer : If three stage amplifiers has individual stage gain of 10 db, 5 db & 12 db then the total gain 27 db

Tuned amplifiers are used for - - - - frequency amplification

Last Answer : Tuned amplifiers are used for Radio frequency amplification

In all base driver amplifiers

Last Answer : In all base driver amplifiers ac collector voltage is 180° out of phase with ac base voltage.

what are bjt amplifiers used for?

Last Answer : Transformer coupled amplifiers Direct coupled amplifiers Multistage amplifiers Darlington amplifiers Emmiter follower

Negative feedback in amplifiers – (1) increases bandwidth and decreases noise (2) decreases bandwidth and decreases noise (3) increases bandwidth and in-creases noise (4) decreases bandwidth and increases noise

Description : Negative feedback in amplifiers – (1) increases bandwidth and decreases noise (2) decreases bandwidth and decreases noise (3) increases bandwidth and in-creases noise (4) decreases bandwidth and increases noise

Last Answer : (1) increases bandwidth and decreases noise Explanation: Voltage gain, input impedance, output impedance, bandwidth etc. are few important characteristics of an amplifier. These parameters are more or ... be controlled. This can be conveniently achieved by employing a technique, called the feedback.

Negative feedback in amplifiers – (1) increases bandwidth and decreases noise (2) decreases bandwidth and decreases noise (3) increases bandwidth and in-creases noise (4) decreases bandwidth and increases noise

Description : Negative feedback in amplifiers – (1) increases bandwidth and decreases noise (2) decreases bandwidth and decreases noise (3) increases bandwidth and in-creases noise (4) decreases bandwidth and increases noise

Last Answer : (1) increases bandwidth and decreases noise Explanation: Voltage gain, input impedance, output impedance, bandwidth etc. are few important characteristics of an amplifier. These parameters are more or ... be controlled. This can be conveniently achieved by employing a technique, called the feedback.

Negative feedback in amplifiers (1) increases bandwidth and decreases noise (2) decreases bandwidth and decreases noise (3) increases bandwidth and increases noise (4) decreases bandwidth and increases noise

Description : Negative feedback in amplifiers (1) increases bandwidth and decreases noise (2) decreases bandwidth and decreases noise (3) increases bandwidth and increases noise (4) decreases bandwidth and increases noise

Last Answer :  increases bandwidth and decreases noise

Comment on the effect of negative feedback on the gain, input and output resistance of the feedback amplifiers.Describe the gain bandwidth product term used in this context and its importance.

Description : Comment on the effect of negative feedback on the gain, input and output resistance of the feedback amplifiers.Describe the gain bandwidth product term used in this context and its importance.

Last Answer : Effect of negative feedback: 1. Gain decreases with negative feedback. 2. Input resistance increases with negative feedback. 3. Output resistance decreases with negative feedback. Explanation ... feedback bandwidth increases which means it is stable output on more range of frequency.

Positive feed back used in - - - -

Last Answer : Positive feedback used in Oscillators

. In evaporators, lowering the feed temperature (A) Increases the heating area required (B) Reduces the economy (C) Both (A) and (B) (D) Decreases the heating area required

Description : . In evaporators, lowering the feed temperature (A) Increases the heating area required (B) Reduces the economy (C) Both (A) and (B) (D) Decreases the heating area required

Last Answer : (C) Both (A) and (B)

What is the disadvantage of negative feed back?

Description : What is the disadvantage of negative feed back?

Last Answer : Reduces amplifier gain.

What is the advantage of negative feed back?

Description : What is the advantage of negative feed back?

Last Answer : 1. increased stability 2. Increased bandwidth 3. Decreased noise 4. Less frequency distortion

What is negative feed back?

Description : What is negative feed back?

Last Answer : If the feed back signal is applied in such a way that it is out of phase with the input signal and thus decreases it is said to be positive feedback.

Negative feed back:

Description : Negative feed back:

Last Answer : Negative feed back: Decreases the gain and increase the band width of the amplifier

Assuming the US reduces coal use due to negative externalities, should the US restrict coal exports to China and India who seek to use and build more coal-fired electrical generating plants?

Description : Assuming the US reduces coal use due to negative externalities, should the US restrict coal exports to China and India who seek to use and build more coal-fired electrical generating plants?

Last Answer : Coal jobs are already being lost at an alarming rate. If we don’t mine it, it will come from other coal exporting countries. I don’t see any benefit to hurting ourselves in a futile attempt to manage other countries.

A catalyst is said to be a negative catalyst, if it (A) Retards the rate of reaction (B) Reduces the value of equilibrium constant (C) Does not initiate the reaction (D) All (A), (B) and (C)

Description : A catalyst is said to be a negative catalyst, if it (A) Retards the rate of reaction (B) Reduces the value of equilibrium constant (C) Does not initiate the reaction (D) All (A), (B) and (C)

Last Answer : (A) Retards the rate of reaction

Consider the following statements: Sinking of an intermediate support of a continuous beam 1. Reduces the negative moment at support. 2. Increases the negative moment at support. 3. Reduces the positive moment at support. 4. Increases the positive moment at the centre of span. Of these statements (A) 1 and 4 are correct (B) 1 and 3 are correct (C) 2 and 3 are correct (D) 2 and 4 are correct

Description : Consider the following statements: Sinking of an intermediate support of a continuous beam 1. Reduces the negative moment at support. 2. Increases the negative moment at support. 3. Reduces the positive moment at ... 1 and 3 are correct (C) 2 and 3 are correct (D) 2 and 4 are correct

Last Answer : (A) 1 and 4 are correct

Sinking of an intermediate support of a continuous beam (i) Reduces the negative moment at support (ii) Increases the negative moment at support (iii) Reduces the positive moment at center of span (iv) Increases the positive moment at center of span The correct answer is (A) (i) and (iii) (B) (i) and (iv) (C) (ii) and (iii) (D) (ii) and (iv)

Description : Sinking of an intermediate support of a continuous beam (i) Reduces the negative moment at support (ii) Increases the negative moment at support (iii) Reduces the positive moment at center of span (iv) Increases the positive moment ... (B) (i) and (iv) (C) (ii) and (iii) (D) (ii) and (iv)

Last Answer : Answer: Option B

Dual wheels have disadvantage of a)reducing soil contact pressure and sub soil compact negative pressure b) concentrating load over an area c)reduces load on area by 50% d) none of the above

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Last Answer : b) concentrating load over an area

The following diuretic reduces positive free water clearance but does not affect negative free water clearance: A. Hydroflumethiazide B. Furosemide C. Ethacrynic acid D. Mannitol

Description : The following diuretic reduces positive free water clearance but does not affect negative free water clearance: A. Hydroflumethiazide B. Furosemide C. Ethacrynic acid D. Mannitol

Last Answer : A. Hydroflumethiazide

Is it possible to bridge an odd number of amplifiers?

Description : Is it possible to bridge an odd number of amplifiers?

Last Answer : No. That's not possible. Amplifiers can only be bridged in pairs, and pairs of pairs, etc. And if they're not identical amps, you're asking for trouble, too. Some stereo amplifiers are wired so that you ... 4-channel, and he's bridging them in some odd way to create a balanced pair of pair of amps.

What are antenna amplifiers used for?

Description : What are antenna amplifiers used for?

Last Answer : Antenna amplifiers are used to strengthen the signal being supplied to an appliance such as your TV. Amplifiers are necessary when the signal is weak and interferes with your TV reception.

Can I get government assistance if I am deaf and need phone amplifiers?

Description : Can I get government assistance if I am deaf and need phone amplifiers?

Last Answer : Some states do have assistance available-- Nevada and Nebraska are two examples. Help from the Federal Government directly is not available through Medicare or the National Institute on Deafness and Other ... do have a directory of local groups that will help-- www.nidcd.nih.gov/directory/

Are phone amplifiers bad for your hearing?

Description : Are phone amplifiers bad for your hearing?

Last Answer : They can be bad for your hearing if they are putting out more than 105 dB. 10 minutes of noise at 105 dB can damage your hearing. Though minor damage can be repaired by itself, repeatedly getting minor damage adds up to major damage and hearing loss.

Are car amplifiers just about volume, or do they improve sound quality, as well?

Description : Are car amplifiers just about volume, or do they improve sound quality, as well?

Last Answer : Cap amplifiers can provide an enhanced audio experience as they often are able to reproduce a wider range of audio frequencies compared to many stock car stereos.

Does the volume go to "11" on any car amplifiers?

Description : Does the volume go to "11" on any car amplifiers?

Last Answer : No. Police can pull you over for noise pollution so they tend not to make them do higher.

Which car amplifiers work best with MP3 files?

Description : Which car amplifiers work best with MP3 files?

Last Answer : Pioneer is the best amplifer and car system that works with MP3 files.

Are the amplifiers easy to remove?

Description : Are the amplifiers easy to remove?

Last Answer : Yes it's easy to remove amplifiers from your car. First make sure the fuse is out of the power wire , so the wire is not live. Then disconnect the wires from your amp. Then unscrew the amp from where it's mounted.

Are there special amplifiers for hybrid and electric vehicles?

Description : Are there special amplifiers for hybrid and electric vehicles?

Last Answer : Yes, they draw power differently as to not kill the engine.

Common basic applications for the operational amplifier include ____________. A. counting, pulsing and clocking amplifiers B. summing, scaling and difference amplifiers C. step-up, step-down and rectifying amplifiers D. all of the above

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Last Answer : Answer: B

Operational amplifiers, used primarily in analog circuits, are characterized by ____________. A. high input impedance, high gain and low output impedance B. high input impedance, high gain and high output impedance C. low input impedance, low gain and high output impedance D. low input impedance, high gain and low output impedance

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Last Answer : Answer: A

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Last Answer : Answer: A

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Last Answer : Answer: A

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Description : If you have available number of power amplifiers with a gain of 100 each, how many such amplifiers do you need to cascade to give an overall gain of 60 dB? A. 3 B. 4 C. 5 D. 2

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Description : How are amplifiers classified according to the transistor configuration?

Last Answer : 1. Common emitter amplifier 2. Common base amplifier 3. Common collector amplifier

How are amplifiers classified according to the input?

Description : How are amplifiers classified according to the input?

Last Answer : 1. Small – signal amplifier 2. Large – signal amplifier

List the applications of Log amplifiers:

Description : List the applications of Log amplifiers:

Last Answer : 1.Analog computation may require functions such as lnx, log x, sin hx etc. These functions can be performed by log amplifiers 2.Log amplifier can perform direct dB display on digital voltmeter and spectrum analyzer 3.Log amplifier can be used to compress the dynamic range of a signal

………………... are needed to communicate with systems on other networks.A. repeaters B. amplifiers C. Bridge D. Gateways

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Which of the following contributes to harmonics distortion in amplifiers? A) Positive feedback B) Presence of noise C) Defective active device D) Non linearity in active device.

Description : Which of the following contributes to harmonics distortion in amplifiers? A) Positive feedback B) Presence of noise C) Defective active device D) Non linearity in active device.

Last Answer : D) Non linearity in active device.

What is the primary difference between the NPN and PNP amplifiers?

Description : What is the primary difference between the NPN and PNP amplifiers?

Last Answer : The polarity of the source voltage

List two common usages of magnetic amplifiers

Description : List two common usages of magnetic amplifiers

Last Answer : Servosystems, temperature recorders, or power supplies

The IF amplifiers are connected in what amplifier configuration?

Description : The IF amplifiers are connected in what amplifier configuration?

Last Answer : Cascade.

In what two ways are amplifiers classified?

Description : In what two ways are amplifiers classified?

Last Answer : By function and frequency response.