menu search
person
How does an operational amplifier work?
thumb_up_alt 0 like thumb_down_alt 0 dislike
61 views

Related questions

Description :

What is the meaning of operational amplifier?

thumb_up_alt 0 like thumb_down_alt 0 dislike
57 views 0 answers
Description :

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

Answer :

The effect of a finite gain of an operational amplifier used in an integrator is that there will be instability in the circuit

thumb_up_alt 0 like thumb_down_alt 0 dislike
111 views 1 answer
Description :

What is the use of operational amplifiers?

thumb_up_alt 0 like thumb_down_alt 0 dislike
54 views 0 answers
Description :

How does negative feedback reduces distortion in an amplifier?

thumb_up_alt 0 like thumb_down_alt 0 dislike
274 views 0 answers
Description :

How does a single phase induction motor work?

Answer :

As we know that single phase induction is not self started because for self started we require atleast two revolving field but single phase induction motor has only one. So we provide extra ... 1phase IM classified as split phase IM, capacitor start capacitor run, capacitor start induction run.

thumb_up_alt 0 like thumb_down_alt 0 dislike
105 views 1 answer
Description :

How does the Arduino work?

thumb_up_alt 0 like thumb_down_alt 0 dislike
61 views 0 answers
Description :

How does a PSC motor work?

thumb_up_alt 0 like thumb_down_alt 0 dislike
304 views 0 answers
Description :

How does electric locomotive work?

Answer :

Electric  locomotives  are  powered   by  motors  connected  to  battery  or  any  supply . The  electric  supply  is  connected  to  a  motor  which  drives  set  of  gears  connected  to  wheels.

thumb_up_alt 0 like thumb_down_alt 0 dislike
166 views 1 answer
Description :

What is a transducer and how does it work?

Answer :

An electronic device that converts one form of energy to another form.for example a transducer is used in microphone to convert speech signals to electrical signal.on the other hand,transducer is used to convert an electrical signal to speech signals in speakers.

thumb_up_alt 0 like thumb_down_alt 0 dislike
91 views 1 answer
Description :

How does signal processing work?

thumb_up_alt 0 like thumb_down_alt 0 dislike
69 views 0 answers
Description :

What is a servo motor and how does it work?

Answer :

It is a simple electrical motor that is operated by AC or DC signal in order to provide a precise angular motion for a given electrical signal.

thumb_up_alt 0 like thumb_down_alt 0 dislike
83 views 1 answer
Description :

What do you mean by frequency response of an amplifier?

thumb_up_alt 0 like thumb_down_alt 0 dislike
84 views 0 answers
Description :

Why does a transformer only work with an AC supply?

Answer :

The transformer work depends on the induction as main principle ,for that AC is the right means

thumb_up_alt 0 like thumb_down_alt 0 dislike
127 views 3 answers
Description :

Answer :

Electric locomotive has the highest operational availability.

thumb_up_alt 0 like thumb_down_alt 0 dislike
66 views 1 answer
Description :

What type of biasing is used in CE amplifier?

thumb_up_alt 0 like thumb_down_alt 0 dislike
69 views 0 answers
Description :

What is the advantage of differential amplifier?

thumb_up_alt 0 like thumb_down_alt 0 dislike
74 views 0 answers
Description :

What is the power amplifier?

thumb_up_alt 0 like thumb_down_alt 0 dislike
57 views 0 answers
Description :

What is the use of differential amplifier?

thumb_up_alt 0 like thumb_down_alt 0 dislike
63 views 0 answers
Description :

How can BJT be used as an amplifier?

thumb_up_alt 0 like thumb_down_alt 0 dislike
77 views 0 answers
Description :

Why using megger ? how to work megger?

Answer :

Megger is all about safety. You need to use cables that can meet your demand without putting anyone at risk through earth leakages. So Megger is all about testing cable insulation. You use an insulation tester resistant meter to make sure your cables are standard and properly insulated.

thumb_up_alt 0 like thumb_down_alt 0 dislike
49 views 1 answer
Description :

How do induction heaters work?

thumb_up_alt 0 like thumb_down_alt 0 dislike
36 views 0 answers
Description :

Define gain and bandwidth of an amplifier.

Answer :

Bandwidth  The range of frequency over which the voltage gain is equal to or greater than 70.7% of its maximum value Gain: The ratio of output parameter (voltage/ current /power) to the input parameter (voltage/ current /power) of an amplifier is known as gain. It is denoted by a letter A

thumb_up_alt 0 like thumb_down_alt 0 dislike
66 views 1 answer
Description :

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 

Answer :

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 

thumb_up_alt 0 like thumb_down_alt 0 dislike
98 views 1 answer
Description :

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

Answer :

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

thumb_up_alt 0 like thumb_down_alt 0 dislike
287 views 1 answer
Description :

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

Answer :

An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is 9.23

thumb_up_alt 0 like thumb_down_alt 0 dislike
182 views 1 answer
Description :

The gain of an ideal amplifier must be

Answer :

The gain of an ideal amplifier must be infinity

thumb_up_alt 0 like thumb_down_alt 0 dislike
75 views 1 answer
Description :

What is stability in an amplifier?

thumb_up_alt 0 like thumb_down_alt 0 dislike
68 views 0 answers
Description :

Draw a neat sketch and explain the accessory used to support long work.

Answer :

Accessory to support long work: A steady rest is a tool for a lathe, enabling a machinist to make deep cuts in long, slender stock, bore out thin pieces of metal, and generally keeps thin stuff straight. ... tool that follows the cutter, a steady rest is firmly attached to the bed of a lathe.

thumb_up_alt 0 like thumb_down_alt 0 dislike
26 views 1 answer
Description :

State the modification to be done in dc series motor to work satisfactorily as ac series motor. State applications of ac series motor.

Answer :

Modifications are necessary in a dc series motor so that it operates satisfactorily on ac supply. The modifications are as follows:  1) AC series motor is built with a few field turns as ... and grinders 5) High speed vacuum cleaners 6) Sewing machines 7) Food processors 8) Drilling machine 

thumb_up_alt 0 like thumb_down_alt 0 dislike
124 views 1 answer
Description :

The unit of work or energy in S.I. units is

Answer :

The unit of work or energy in S.I. units is joule.

thumb_up_alt 0 like thumb_down_alt 0 dislike
62 views 1 answer
Description :

What is the work of MOSFET?

thumb_up_alt 0 like thumb_down_alt 0 dislike
70 views 0 answers
Description :

Answer :

Unit of work is Joule denoted by capital J .

thumb_up_alt 0 like thumb_down_alt 0 dislike
64 views 1 answer
Description :

working of class B push pull amplifier.

Answer :

Circuit Diagram:- Operation:  In class B amplifier transistor conduct only for half cycle of input signal.One conduct in positive half cycle and other conducts in negative half ... Then output transformer joins these two halves and produces a full sine wave in the load resistor. 

thumb_up_alt 0 like thumb_down_alt 0 dislike
112 views 1 answer
Description :

Compare amplifier and oscillator.

Answer :

Figure shows a block diagram of an amplifier and an oscillator.   An amplifier is a device, which produces an output signal with similar waveform as that of the input. ... is supplied. An oscillator does not require any external signal to start or maintain energy conversion process.

thumb_up_alt 0 like thumb_down_alt 0 dislike
67 views 1 answer
Description :

role of tuned LC circuit in tuned amplifier.

Answer :

In order to pick up and amplify the desired radio frequency signal, the resistive load in the audio amplifier is replaced by a tuned circuit (also called a parallel resonant circuit)as shown ... desired radio frequency signal. (ii)Amplification of the selected signal to a suitable voltage level.

thumb_up_alt 0 like thumb_down_alt 0 dislike
74 views 1 answer
Description :

 applications of RC coupled amplifier

Answer :

Applications of RC coupled amplifier: (i) Widely used as Voltage amplifiers. (ii) They are used in Public Address System. (iii) In Tape recorders. (iv) In stereo amplifiers (v) In T.V. V.C.R. and C.D. Players.

thumb_up_alt 0 like thumb_down_alt 0 dislike
66 views 1 answer
Description :

characteristics of Hi-Fi amplifier system.

Answer :

Characteristics of HI-FI amplifier: 1. Signal to noise ratio should be better than 50dB. 2. Frequency response should be flat within +-1dB. 3. Nonlinear distortion should not be more ... provided. 6. Environmental conditions should be such as to eliminate the external noise in listening room. 

thumb_up_alt 0 like thumb_down_alt 0 dislike
41 views 1 answer
Description :

 two stage amplifier and need of multistage amplifier.

Answer :

Circuit diagram of two stage amplifier : Need of multistage amplifier: The output from a single stage amplifier is usually insufficient to drive an output device. So that ... to second amplifier.  To increase the overall gain of the amplifier multistage amplifier is needed.

thumb_up_alt 0 like thumb_down_alt 0 dislike
71 views 1 answer
Description :

advantages and disadvantages of direct coupled amplifier over RC coupled amplifier. 

Answer :

Advantages:  Due to absence of coupling capacitors, the gain does not reduce on the lower frequency side.  This amplifier can amplify dc signals. Reduced cost and complexity due to absence of ...   The output waveform has a dc shift.  Poor frequency response at a higher frequency.

thumb_up_alt 0 like thumb_down_alt 0 dislike
429 views 1 answer
Description :

 transformer coupled amplifier

Answer :

 transformer coupled amplifier

thumb_up_alt 0 like thumb_down_alt 0 dislike
65 views 1 answer
Description :

Single stage CE amplifier

Answer :

Requirement(Necessity) of Multistage amplifier: -In many applications we required a high gain. But sometimes gain produced by an amplifier is not sufficient so to increase the gain, we ... necessity of multistage amplifier is for providing high gain. It is also required for high bandwidth.

thumb_up_alt 0 like thumb_down_alt 0 dislike
65 views 1 answer
Description :

Give the different types of amplifier coupling.

Answer :

1. Resistance – capacitance (RC) coupling.  2. Inductance (LC) coupling.  3. Transformer coupling (TC)  4. Direct coupling (D.C.)

thumb_up_alt 0 like thumb_down_alt 0 dislike
2.5k views 1 answer
Description :

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

Answer :

The need of multistage amplifier The voltage (or power) gain, obtained from a single stage small signal amplifier, is limited. Therefore, it is not sufficient for all practical applications. Therefore, in ... to use a MULTISTAGE AMPLIFIER .  Frequency response of R-C coupled amplifier.

thumb_up_alt 0 like thumb_down_alt 0 dislike
129 views 1 answer
Description :

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

Answer :

Class A Push-pull Amplifier: The circuit diagram of class A push-pull amplifier is as shown in the fig.(a). Operation: The resistors R1 and R2 along with Vcc provide the dc biasing so as ... Vcc is applied to the collectors of transistors Q1 and Q2 through the centretapped output transformer. 

thumb_up_alt 0 like thumb_down_alt 0 dislike
81 views 1 answer
Description :

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

Answer :

Need:- The voltage (or power) gain, obtained from a single stage small signal amplifier, is limited. Therefore, it is not sufficient for all practical applications. Therefore, in order to obtain greater voltage and power gain, cascade amplifiers are used.

thumb_up_alt 0 like thumb_down_alt 0 dislike
473 views 1 answer
Description :

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

Answer :

Parameter RC coupled Transformer coupled Direct coupled  Coupling element Resistor and capacitor Transformer No element Impedance matching Poor Excellent good Frequency ... Low frequency amplifier,opamp Size and cost small Large and bulky least

thumb_up_alt 0 like thumb_down_alt 0 dislike
2.0k views 1 answer
Description :

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

Answer :

Operation:- The capacitors C1 and C2 are called as the coupling capacitors. As the load resistor RL (not shown in the diagram) is coupled to the amplifier through the coupling capacitor ... connected in the common emitter (CE) configuration. Therefore, this amplifier is called CE amplifier. 

thumb_up_alt 0 like thumb_down_alt 0 dislike
3.1k views 1 answer
Description :

List the advantages of RC coupled amplifier.

Answer :

Advantages: 1. The frequency response is excellent 2. The circuit is very compact and extremely light 3. Cost is low because it employ resistors and capacitors which are cheap 

thumb_up_alt 0 like thumb_down_alt 0 dislike
81 views 1 answer
Description :

State the need of cascade amplifier.

Answer :

Most systems a single transistor amplifier does not provide sufficient gain or bandwidth or will not have the correct input or output impedance matching. Hence cascade amplifier is use which consist more than one stages of amplification.

thumb_up_alt 0 like thumb_down_alt 0 dislike
60 views 1 answer
Description :

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 

Answer :

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 

thumb_up_alt 0 like thumb_down_alt 0 dislike
273 views 1 answer
editAsk a Question
...