State the need of multistage amplifier. List the types of multistage amplifier and give two advantages of each type.

State the need of multistage amplifier. List the types of multistage amplifier and give two advantages of each type. 
by

2 Answers

Answer :

The multistage amplifiers are needed for

- To achieve higher input impedance

- To achieve higher Gain

- To achieve Low output impedance

Coupling

Direct coupling - Less complex, used for load which is in series.

RC coupling - Noise free, High gain

Transformer coupling - Good isolation, Good impedance matching
by

Answer :

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 order to obtain greater voltage and power gain, we have to use more than one stage of amplification. Such an amplifier is called a „MULTISTAGE AMPLIFIER‟.

by

Related questions

Draw the multistage amplifier circuit diagram using RC coupling. State its advantages.

Description : Draw the multistage amplifier circuit diagram using RC coupling. State its advantages.

Last Answer : Advantages: 1. It has a wide frequency response. 2. For coupling the resistor and the capacitor are used and which are not expensive so the cost is low. 3. The circuit is very ... a wide frequency band. 5. It is high fidelity amplifier. 6. It provides less frequency distortion.

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

Description : 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.

two stage amplifier and need of multistage amplifier.

Description :  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.

Draw circuit diagram of two stage RC coupled amplifier using BJT

Description : Draw circuit diagram of two stage RC coupled amplifier using BJT

Last Answer : BJT - To amplify input signal. R1 & R2 = Biasing resistor to provide DC biasing voltage RE = Emitter resistor to control gain RL = Load resistor to carry load current Cin = Cout = Coupling capacitors to block DC CE = emitter bypass resistor

Give the advantages of multistage compression.

Description : Give the advantages of multistage compression.

Last Answer : 1.Saving in work is obtained 2.There is little chance of lubrication trouble as the maximum temperature is reduced. 3.it improves the volumetric efficiency. 4.the leakage loss is reduced ... 5. it provide more uniform torque and thus smaller size flywheel is required. 6.lighrter cylinders.

Name the circuit used in rectifier to minimize ripple. List the types of this circuit with simple circuit diagram.

Description : Name the circuit used in rectifier to minimize ripple. List the types of this circuit with simple circuit diagram.

Last Answer : Rectifier filter is an electronic circuit that removes ripple or unwanted AC signal components from the output of a Rectifier. Types - (a) Series Inductor filter (d) Shunt capacitor filter (b) L-C type filter (e) Π - type filter

List various types of CNC machine

Description : List various types of CNC machine

Last Answer : • CNC Plasma Cutting Machine. • CNC Laser Cutting Machine. • CNC Milling Machine. • CNC Router Machine. • CNC Lathe Machine.

List various elements of mechatronic system and state applications.

Description : List various elements of mechatronic system and state applications.

Last Answer : Elements Sensors. Actuators (Hydraulics, Phnumetics) PLC, Micro controllers. Electrical Motors. Mechanical Couplings, Assembly & Gears. Control Panel. Applications ... washer and washing machines. automatic air conditioning systems unmanned aerial vehicles and automatic pilots. 

Draw a labelled pin diagram of IC-555 and state function of each pin

Description : Draw a labelled pin diagram of IC-555 and state function of each pin

Last Answer : Pin Name Purpose 1 GND Ground reference voltage, low level (0 V)  2 TRIG The OUT pin goes high and a timing interval starts when this input falls below 1/2 of ... 8 Vcc Positive supply voltage, which is usually between 3 and 15 V depending on the variation.

Give the speciality of zener diode. State its 2-3 applications

Description : Give the speciality of zener diode. State its 2-3 applications

Last Answer : Speciality - This diode can keep breakdown voltage constant across it. It is used in reverse bias. Applications - Zener diodes voltage regulation as reference elements surge suppressors switching applications clipper circuits.

List the advantages of RC coupled amplifier.

Description : 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 

Give examples of : (i) Electrical transducer (ii) Mechanical Transducer

Description : Give examples of : (i) Electrical transducer (ii) Mechanical Transducer

Last Answer : (i) Electrical transducer Voltage measurement Temperature measurement Strain measurement (ii) Mechanical Transducer Pressure measurement Force measurement Velocity measurement

Define rectifier. Draw circuit diagram and input-output waveforms of bridge type full wave rectifier

Description : Define rectifier. Draw circuit diagram and input-output waveforms of bridge type full wave rectifier 

Last Answer : Rectifier - This circuit convert AC signal into DC.

Define transducer. State factors which are considered while selecting transducer for a particular application.

Description : Define transducer. State factors which are considered while selecting transducer for a particular application.

Last Answer : Transducer - It converts one form of signal into another form. A transducer is a device that is used to convert a physical quantity into its corresponding electrical signal. ... compatibility : The transducer should maintain input and output characteristic for the selected environmental condition.

State important specification parameters of ADC

Description : State important specification parameters of ADC

Last Answer : Accuracy Resolution Linearity Conversion time Settling time stability

Define counter. State four applications of counter.

Description : Define counter. State four applications of counter.

Last Answer : Counter - The circuit which counts number of clock pulses is called as counter. Applications - Processor Real time clock Calculator Batch counter

Draw symbol of NPN transistor and state three configurations of transistor (BJT)

Description : Draw symbol of NPN transistor and state three configurations of transistor (BJT)

Last Answer : Configuration - Common Emitter Common Collector Common Base

Intercooling in multistage compression is done A. To cool the air during compression B. To cool the air at delivery C. To enable compression in two stages D. To minimize the work of compression

Description : Intercooling in multistage compression is done A. To cool the air during compression B. To cool the air at delivery C. To enable compression in two stages D. To minimize the work of compression

Last Answer : ANSWER : D

A multistage sales tax with credit for taxes paid on business purchases.

Description : A multistage sales tax with credit for taxes paid on business purchases.

Last Answer : Ans. VAT

For a multistage compressor, the polytropic efficiency is A. the efficiency of all stages combined together B. the efficiency of one stage C. Constant throughout for all the stages D. a direct consequence of the pressure ratio

Description : For a multistage compressor, the polytropic efficiency is A. the efficiency of all stages combined together B. the efficiency of one stage C. Constant throughout for all the stages D. a direct consequence of the pressure ratio

Last Answer : ANSWER : C

Which one of the following is correct? A. In a multistage compressor adiabatic efficiency is less than stage efficiency B. In a multistage turbine adiabatic efficiency is less than the stage efficiency C. Preheat factor for a multistage compressor is greater than one D. Preheat factor does not affect the multistage compressor performance

Description : Which one of the following is correct? A. In a multistage compressor adiabatic efficiency is less than stage efficiency B. In a multistage turbine adiabatic efficiency is less than the stage ... compressor is greater than one D. Preheat factor does not affect the multistage compressor performance

Last Answer : ANSWER : A

In a reciprocating air compressor the compressor work per kg of air A. Increases as clearance volume increases B. Decreases as clearance volume increases C. Is independent of clearance volume D. Increases with clearance volume only of multistage compressor

Description : In a reciprocating air compressor the compressor work per kg of air A. Increases as clearance volume increases B. Decreases as clearance volume increases C. Is independent of clearance volume D. Increases with clearance volume only of multistage compressor

Last Answer : ANSWER : C

When a multistage tray tower uses a minimum reflux ratio, it implies (A) Infinite trays and maximum reboiler heat load (B) Infinite trays and minimum reboiler heat load (C) Minimum trays and minimum reboiler heat load (D) Minimum trays and maximum reboiler heat load

Description : When a multistage tray tower uses a minimum reflux ratio, it implies (A) Infinite trays and maximum reboiler heat load (B) Infinite trays and minimum reboiler heat load (C) Minimum trays and minimum reboiler heat load (D) Minimum trays and maximum reboiler heat load

Last Answer : (A) Infinite trays and maximum reboiler heat load

A ________ switch combines crossbar switches inseveral (normally three) stages. A) multistage B) multiple crossbar C) multiple path D) none of the above

Description : A ________ switch combines crossbar switches inseveral (normally three) stages. A) multistage B) multiple crossbar C) multiple path D) none of the above

Last Answer : multistag

Multistage centrifugal pumps are generally used for (A) High head (B) Low head but high discharge (C) Highly viscous liquid (D) Slurries of high solid concentration

Description : Multistage centrifugal pumps are generally used for (A) High head (B) Low head but high discharge (C) Highly viscous liquid (D) Slurries of high solid concentration

Last Answer : (A) High head

Interstage coolers are provided in a multistage compressor to (A) Save power in compressing a given volume to a given pressure (B) Cool the delivered air (C) Achieve the exact delivery pressure (D) None of these

Description : Interstage coolers are provided in a multistage compressor to (A) Save power in compressing a given volume to a given pressure (B) Cool the delivered air (C) Achieve the exact delivery pressure (D) None of these

Last Answer : (A) Save power in compressing a given volume to a given pressure

Boiler feed water pump is usually a __________ pump.(A) Reciprocating (B) Gear (C) Multistage centrifugal (D) Diaphragm

Description : Boiler feed water pump is usually a __________ pump. (A) Reciprocating (B) Gear (C) Multistage centrifugal (D) Diaphragm

Last Answer : (C) Multistage centrifugal

Multistage compressors are used in industry, because they (A) Reduce the cost of compressor (B) Reduce the size requirement (C) Resemble closely to isothermal compression (D) Are easy to control

Description : Multistage compressors are used in industry, because they (A) Reduce the cost of compressor (B) Reduce the size requirement (C) Resemble closely to isothermal compression (D) Are easy to control

Last Answer : (C) Resemble closely to isothermal compression

Multistage operation (as in the case of catalytic oxidation of SO2 ) is not carried out for NH3 synthesis, because of (A) Comparatively higher pressure drop (B) High cost of the high pressure vessel used for the reactor (C) Higher pumping cost (D) Chances of entrainment and disturbance of catalyst bed

Description : Multistage operation (as in the case of catalytic oxidation of SO2 ) is not carried out for NH3 synthesis, because of (A) Comparatively higher pressure drop (B) High cost of the high pressure ... for the reactor (C) Higher pumping cost (D) Chances of entrainment and disturbance of catalyst bed

Last Answer : (B) High cost of the high pressure vessel used for the reactor

The preferred reacting system for oxidation of o-xylene to phthalic anhydride is (A) Jacketed liquid phase CSTR (B) Jacketed steam heated multitubular reactor (C) Multitubular reactor with cooling (D) Multistage multitubular reactor with interstage cooling

Description : The preferred reacting system for oxidation of o-xylene to phthalic anhydride is (A) Jacketed liquid phase CSTR (B) Jacketed steam heated multitubular reactor (C) Multitubular reactor with cooling (D) Multistage multitubular reactor with interstage cooling

Last Answer : (A) Jacketed liquid phase CSTR

In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 ⇌ 2SO3 ), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to SO3 can be increased by (A) Increasing the oxygen concentration (B) Putting more quantity of V2O5 catalyst in the converter (C) Removing some quantity of SO3 during intermediate stage (D) Maintaining low temperature & pressure in the converter

Description : In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 ⇌ 2SO3 ), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to ... some quantity of SO3 during intermediate stage (D) Maintaining low temperature & pressure in the converter

Last Answer : (C) Removing some quantity of SO3 during intermediate stage

Multistage catalytic converter is not used in the (A) Conversion of SO2 to SO3 (B) NH3 synthesis reaction (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Multistage catalytic converter is not used in the (A) Conversion of SO2 to SO3 (B) NH3 synthesis reaction (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (B) NH3 synthesis reaction

Multistage compression of air as compared to single stage compression offers the advantage of (A) Power saving per unit weight of air delivered (B) Moisture elimination in the inter-stage cooler (C) Increased volumetric efficiency (D) All (A), (B) & (C)

Description : Multistage compression of air as compared to single stage compression offers the advantage of (A) Power saving per unit weight of air delivered (B) Moisture elimination in the inter-stage cooler (C) Increased volumetric efficiency (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Comparison of three configuration of BJT

Description : Comparison of three configuration of BJT

Last Answer : Parameter Common Base(CB) Common Emitter (CE) Common collector (CC) Input terminal  Emitter Base Base Common terminal Base Emitter Collector Output terminal Collector Collector Emitter Gain factor Alpha(Ic/Ie) Beta(Ic/Ib) Gamma(Ie/Ib)

Piezo-electric effect

Description : Piezo-electric effect

Last Answer : Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress. The word Piezoelectric is derived from the Greek piezein, which means to squeeze or ... Storage Temperature Range: -55 to + 125°C Insulation Resistance: 500 M ohms

Shift Register

Description : Shift Register

Last Answer : Shift Register:- Shift Register is a group of flipflops used to shift data from one side to other side or to convert serial data into parallel or vice versa. Shift registers are of following types  i) ... iii) Parallel in serial out(PISO) iv) Parallel in parallel out(PIPO)

Comparison of BJT and FET

Description : Comparison of BJT and FET

Last Answer : FET BJT It is unipolar device i.e. current in the device is carried either by electrons or holes It is bipolar device i.e. current in the device is carried either by both ... is comparatively more noisy. It is relatively immune to radiation. It is susceptible to radiation

Selection Criteria of PLC

Description : Selection Criteria of PLC

Last Answer : Selection criteria :- To select PLC for any particular application following points are to be considered. a) Type of PLC: Analog or Digital b) Number of inputs and outputs to PLC c) Operating voltage ... Type of memory of PLC g) Type of programming h) Reliability of PLC i) Flexibility of PLC

Function of OR Gate its logical symbol and truth table.

Description : Function of OR Gate its logical symbol and truth table.

Last Answer : Function: - OR gate is used to perform logical addition. So used in adder subtractor and logic circuits where logical Oring is required. Used to implement SOP form equations. Also used in PLA logic. Logical symbol of OR gate :- Truth table:- 

Define multiplexer. Draw logical symbol of 4:1 multiplexer with truth table and output logical equation

Description : Define multiplexer. Draw logical symbol of 4:1 multiplexer with truth table and output logical equation

Last Answer : Multiplexer - it is a combinational circuit which selects one input from several inputs and connects it to the output.  It is a circuit which has N-input and single output is called as multiplexer.

Compare microprocessor and microcontroller

Description : Compare microprocessor and microcontroller

Last Answer : Application Microprocessor - Computer, Mobile phone, calculator Microcontroller - washing machine, microwave oven Microprocessor Microcontroller Do not have inbuilt RAM or ROM ... access Less multifunction pins on the IC Many multifunction pins on the IC

Compare LED and Photo diode

Description : Compare LED and Photo diode 

Last Answer : Parameters LED (Light Emitting Diode) Photodiode Definition Two terminal device which converts electrical energy into light energy.  Two Terminal Device which converts light energy into ... and Numeric display etc. Switching, high speed counting, ac coupled signaling etc.

Draw simple block diagram of CNC machine and describe in short.

Description : Draw simple block diagram of CNC machine and describe in short.

Last Answer : (i) Input Devices: These are the devices which are used to input the part program in the CNC machine. There are three commonly used input devices and these are punch tape reader, magnetic tape ... Unit: A monitor is used to display the programs, commands and other useful data of CNC machine.

Describe how Op-Amp is used as adder using circuit diagram and output voltage equation.

Description : Describe how Op-Amp is used as adder using circuit diagram and output voltage equation.

Last Answer : Summing Amplifier Circuit In this simple summing amplifier circuit, the output voltage, ( Vout ) now becomes proportional to the sum of the input voltages, V1, V2, V3, etc. Then we can ... to the non-inverting input of the op-amp, it will produce the positive sum of the input voltages.

Draw pin diagram of Op-Amp IC-741.

Description : Draw pin diagram of Op-Amp IC-741.

Last Answer : Pin diagram of Op-Amp IC-741 :

Why NAND and NOR gate are called as universal gate? Draw AND gate using NAND gate only.

Description : Why NAND and NOR gate are called as universal gate? Draw AND gate using NAND gate only. 

Last Answer : Universal gate - All basic gates functionality can be implemented using NAND and NOR gate hence these gates are called as universal gates.  AND gate using NAND gate

State advantages of negative feedback used in feedback amplifier.

Description : State advantages of negative feedback used in feedback amplifier.

Last Answer : Advantage of negative feedback amplifier: * Increased stability in gain * Increased bandwidth * Less amplitude and harmonic distortion * Decreased noise * Less frequency distortion * Less non-linear distortion * Input and output resistance can be modified as desired

Draw the circuit diagram for Instrumentation amplifier using three OP-AMPs. State its advantages and applications.

Description : Draw the circuit diagram for Instrumentation amplifier using three OP-AMPs. State its advantages and applications.

Last Answer : Application: 1. In Data acquisition from low output transducers such as strain gauges, Thermocouples, Wheatstone bridge measurements e.t.c 2. In Medical instrumentation, Navigation, Radar ... video data acquisition and imaging 5. High frequency signal amplification in cable RF systems 

List the types of power amplifier.

Description : List the types of power amplifier.

Last Answer : Types of Power amplifier: 1) Class A power amplifier 2) Class B power amplifier 3) Class AB power amplifier 4) Class C power amplifier

List the types of coupling used in BJT amplifier.

Description : List the types of coupling used in BJT amplifier. 

Last Answer : Types of coupling used in BJT amplifier: i. Resistance capacitance (RC)coupling ii. Impedance coupling iii. Transformer coupling iv. Direct coupling