Which type of ADC gives high resolution?
Last Answer : Sigma Delta, successive approximation and integrating type analogue to digital converter gives very high resolution but they have slower speed.
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108 views
1 answer
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May 4, 2018
by
anonymous

The ADC having highest conversion speed is (A) Dual-slope ADC (B) Successive approximation ADC (C) Flash ADC (D) Servo ADC
Last Answer : The ADC having highest conVersion speed is Flash ADC
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123 views
1 answer
asked
Apr 28, 2018
by
anonymous

Describe the various blocks and their functions in pipelined ADC architecture.
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85 views
0 answers
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Mar 2, 2018
by
anonymous

Integrating or Dual Slope ADC
Last Answer : Operation: At the start of measurement the counter is reset to zero. So output of flip-flop is zero. This is applied to the switch control. The switch control now connects input voltage (Vin) to ... Then the data from counter is passed to the digital readout for display purpose.
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341 views
3 answers
asked
Aug 9, 2017
by
anonymous
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Write a note on ATP?
Last Answer : ATP is abbreviation of adenosine tri-phosphate. Composition: - It is made up of three-phosphate group. Adenosine is formed of nitrogenous base (adenine) and sugar (ribose). In ATP three- ... broken down a large amount of energy is released which is used in different activities of organism.
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7 views
1 answer

Define ADC and DAC. Write two applications of each.
Last Answer : ADC An analog to digital converter (ADC), converts any analog signal into quantifiable data, which makes it easier to process and store, as well as more accurate and reliable by ... signal, hence any analog circuit can work with digital system Application - Microcontroller, washing machine
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192 views
2 answers
asked
Aug 15, 2019
by
anonymous

The number of comparators required in a 4 bit comparator type ADC is (A) 16 (B) 15 (C) 17 (D) 12
Last Answer : The number of comparators required in a 4 bit comparator type ADC is 15
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453 views
1 answer
asked
Apr 28, 2018
by
anonymous

What is Analog to Digital Converter (ADC) ?
Last Answer : Analog to Digital Converter (ADC) Analog quantity may be voltage, temperature, sound, speed, audio etc. it is information or signal. ... digital form), digital speedometer (converts analog speed into digital form) etc.
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3.6k views
1 answer
asked
Aug 9, 2017
by
anonymous

Flash or Parallel ADC
Last Answer : Flash or Parallel ADC
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125 views
1 answer
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Aug 9, 2017
by
anonymous

Which is the fastest type of analogue to digital converter?
Last Answer : Flash converter is the fastest type of analogue to digital converter (ADC).
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88 views
1 answer
asked
May 4, 2018
by
anonymous

A feedback amplifier has a gain of 1000 without feedback. Find the gain with feedback and the amount of feedback in dB for a negative feedback of 10%.
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9 views
0 answers

working of class B push pull amplifier.
Last 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.
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169 views
1 answer
asked
Sep 3, 2019
by
anonymous

Compare amplifier and oscillator.
Last 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.
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90 views
1 answer
asked
Sep 3, 2019
by
anonymous

role of tuned LC circuit in tuned amplifier.
Last 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.
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116 views
1 answer
asked
Sep 3, 2019
by
anonymous

applications of RC coupled amplifier
Last 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.
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92 views
1 answer
asked
Sep 3, 2019
by
anonymous

characteristics of Hi-Fi amplifier system.
Last 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.
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75 views
1 answer
asked
Sep 2, 2019
by
anonymous

two stage amplifier and need of multistage amplifier.
Last 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.
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93 views
1 answer
asked
Aug 19, 2019
by
anonymous

advantages and disadvantages of direct coupled amplifier over RC coupled amplifier.
Last 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.
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612 views
1 answer
asked
Aug 19, 2019
by
anonymous

transformer coupled amplifier
Last Answer : transformer coupled amplifier
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94 views
1 answer
asked
Aug 19, 2019
by
anonymous

Single stage CE amplifier
Last 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.
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87 views
1 answer
asked
Aug 15, 2019
by
anonymous

Give the different types of amplifier coupling.
Last Answer : 1. Resistance – capacitance (RC) coupling. 2. Inductance (LC) coupling. 3. Transformer coupling (TC) 4. Direct coupling (D.C.)
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2.6k views
1 answer
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Jul 24, 2019
by
anonymous

What is distortion in class B amplifier
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80 views
0 answers
asked
Nov 9, 2018
by
anonymous

State the need of multistage amplifier. Draw frequency response of R-C coupled amplifier.
Last 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.
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168 views
1 answer
asked
Sep 5, 2018
by
anonymous

Define gain and bandwidth of an amplifier.
Last 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
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89 views
1 answer
asked
Sep 5, 2018
by
anonymous

Draw diagram of class A push-pull amplifier and explain its operation.
Last 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.
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153 views
1 answer
asked
Sep 5, 2018
by
anonymous

State the need of cascade amplifier and draw circuit diagram of 2-stage direct coupled amplifier.
Last 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.
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512 views
1 answer
asked
Sep 5, 2018
by
anonymous

Compare RC coupled, transformer coupled and direct coupled amplifier based on four points.
Last 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
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3.0k views
1 answer
asked
Sep 5, 2018
by
anonymous

List the advantages of RC coupled amplifier.
Last 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
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110 views
1 answer
asked
Sep 4, 2018
by
anonymous

State the need of cascade amplifier.
Last 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.
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78 views
1 answer
asked
Sep 4, 2018
by
anonymous

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
Last 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
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354 views
1 answer
asked
Jun 18, 2018
by
anonymous

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
Last 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
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171 views
1 answer
asked
Jun 18, 2018
by
anonymous
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What is the efficiency of Class-B amplifier? A) 68.50% B) 78.50% C) 88.50% D) 98.50%
Last Answer : What is the efficiency of Class-B amplifier? A) 68.50% B) 78.50% C) 88.50% D) 98.50%
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94 views
1 answer
asked
Jun 18, 2018
by
anonymous
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Which one of the following is another name for common-collector amplifier? A) Source follower B) Collector follower C) Base follower D) Emitter follower
Last Answer : Which one of the following is another name for common-collector amplifier? A) Source follower B) Collector follower C) Base follower D) Emitter follower
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101 views
1 answer
asked
Jun 18, 2018
by
anonymous

The voltage gains of the amplifier with and without feedback are 20 and 100 respectively. The percentage of negative feedback would be
Last Answer : The voltage gains of the amplifier with and without feedback are 20 and 100 respectively. The percentage of negative feedback would be 4%
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162 views
1 answer
asked
May 3, 2018
by
anonymous

An amplifier has input power of 2 microwatts. The power gain of the amplifier is 60 dB. The output power will be
Last 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
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431 views
1 answer
asked
May 3, 2018
by
anonymous

A differential amplifier has a differential gain of 20,000, CMRR : 80 dB. The common mode gain is given by
Last Answer : A differential amplifier has a differential gain of 20,000, CMRR : 80 dB. The common mode gain is given by 2
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3.2k views
1 answer
asked
May 3, 2018
by
anonymous

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
Last 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
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317 views
1 answer
asked
May 1, 2018
by
anonymous

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
Last Answer : B
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998 views
3 answers
asked
Apr 30, 2018
by
anonymous

The gain of an ideal amplifier must be
Last Answer : The gain of an ideal amplifier must be infinity
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87 views
1 answer
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Apr 26, 2018
by
anonymous

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
Last Answer : The effect of a finite gain of an operational amplifier used in an integrator is that there will be instability in the circuit
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152 views
1 answer
asked
Apr 26, 2018
by
anonymous

What type of biasing is used in CE amplifier?
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72 views
0 answers
asked
Mar 22, 2018
by
anonymous
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Last Answer : The voltage regulation in magnetic amplifier type voltage regulator is effected by varying the reactance.
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106 views
1 answer
asked
Mar 20, 2018
by
anonymous

What is a BJT amplifier?
Last Answer : Bilpolar Juntion transistor , this fuction is control the current
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100 views
1 answer
asked
Mar 19, 2018
by
anonymous
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How can BJT be used as an amplifier?
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86 views
0 answers
asked
Mar 19, 2018
by
anonymous

What do you mean by frequency response of an amplifier?
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88 views
0 answers
asked
Mar 10, 2018
by
anonymous

What is the advantage of differential amplifier?
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79 views
0 answers
asked
Mar 10, 2018
by
anonymous

What is the power amplifier?
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61 views
0 answers
asked
Mar 10, 2018
by
anonymous

What is the use of differential amplifier?
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68 views
0 answers
asked
Mar 10, 2018
by
anonymous

How does an operational amplifier work?
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67 views
0 answers
asked
Mar 10, 2018
by
anonymous

What is the meaning of operational amplifier?
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64 views
0 answers
asked
Mar 10, 2018
by
anonymous
