Multi Stage Transistor Amplifier Question & AnswersNovember 2, 2021 By WatElectronics This article lists 100 Multi-Stage Transistor Amplifier MCQs for Engineering Students. All the Multi-Stage Transistor Amplifier Questions & Answers given below includes solution and link wherever possible to the relevant topic.The multistage transistor amplifier circuit has more than one transistor with associated circuitry. The RC coupling, transformer coupling, and direct coupling are the type of couplings in a multistage transistor amplifier. The increase in gain and change in bandwidth are the advantages of multistage transistor amplifiers. 1). In ______________ amplifier the voltage gain is less than unityCommon emitterCommon collectorCommon baseBoth b and cHintIn common collector and common base amplifier the voltage gain is less than unity 2). In _________ amplifier the voltage gain is greater than unityCommon emitterCommon collectorCommon baseBoth b and cHintIn common emitter amplifier the voltage gain is greater than unity 3). How many types of couplings are there in a single-stage transistor amplifier?OneTwoThreeFourHintThere are four types of couplings are there they are resistance capacitance, impedance, transformer, and direct couplings 4). Which one of the following couplings is used for voltage amplification?RC couplingTransformerDirectNone of the aboveHintThe resistance-capacitance coupling is used for voltage amplification 5). Which one of the following couplings is used for power amplification?RC couplingTransformerDirectNone of the aboveHintThe transformer coupling is used for power amplification 6). Which one of the following couplings is used for amplifying extremely low frequencies?RC couplingTransformerDirectNone of the aboveHintThe direct coupling is used for amplifying extremely low frequencies 7). The impedance matching is not good in _________________ couplingRC couplingTransformerDirectNone of the aboveHintThe impedance matching is not good in resistance-capacitance coupling 8). The impedance matching is excellent in _________________ couplingRC couplingTransformerDirectNone of the aboveHintThe impedance matching is excellent in transformer coupling 9). The Colpitts oscillators are used as __________________RF oscillatorIn mobile applicationsAs temperature sensorAll of the aboveHintThe Colpitts oscillators are used as RF oscillators, used in mobile applications, and also used as the temperature sensor 10). What are the advantages of Colpitts oscillators?Frequency stability is highLess number of components is sufficientIt can withstand high and low-temperatureAll of the aboveHintThe advantages of Colpitts oscillators is the frequency stability is high, has less number of components are sufficient, and it can withstand high and low temperature 11). The hartley oscillators are used as ________________ oscillatorRF oscillatorLocal oscillator in radio receiversTo produce a sine wave of the desired frequencyAll of the aboveHintThe hartley oscillators are used as RF oscillators, as a local oscillator in radio receivers, and to produce a sine wave of the desired frequency 12). Which one of the following oscillators doesn't use capacitive feedback?ColpittsHartleyClappNone of the aboveHintThe hartley oscillator doesn't use capacitive feedback 13). The impedance matching is good in _________________ couplingRC couplingTransformerDirectNone of the aboveHintThe impedance matching is good in direct coupling 14). The frequency response is poor in _______________ couplingRC couplingTransformerDirectNone of the aboveHintThe frequency response is poor in transformer coupling 15). Which one of the following coupling costs is more?RC couplingTansformerDirectNone of the aboveHintThe transformer coupling cost is more compared to other couplings 16). The space and weight is less in ______________ couplingRC couplingTransformerDirectNone of the aboveHintThe space and weight is less in resistance capacitance coupling 17). The electric oscillators are categorized into ________________ typesOneFourSixThreeHintThe electric oscillators are categorized into six types they are sinusoidal, non-sinusoidal, tuned circuit, RC, crystal, and negative resistance oscillatorRead more about Oscillators 18). What are the advantages of the RC phase shift oscillator?Doesn't require transformersCircuit provides good frequency stabilityUsed to provide very low frequenciesAll of the aboveHintThe RC phase shift oscillators don't require transformers, it is used to provide very low frequencies and the circuit provides good frequency stability 19). The frequency response is best in _______________ couplingRC couplingTransformerDirectNone of the aboveHintThe frequency response is best in direct coupling 20). Which one of the following coupling costs is less?RC couplingTransformerDirectNone of the aboveHintThe resistance-capacitance coupling cost is less compared to other couplings 21). The space and weight is more in ______________ couplingRC couplingTransformerDirectNone of the aboveHintspace and weight is more in transformer coupling 22). What are the advantages of the Wien bridge oscillator?Provides constant outputOperation of the circuit is a quite easyOverall gain is highAll of the aboveHintThe Wien bridge oscillator provides constant output, its circuit operation is quite easy, and the overall gain is high 23). The LC oscillators are categorized into __________________ typesOneFourSixThreeHintThe LC oscillators are categorized into three types they are hartley, Colpitts, and Clapp oscillator 24). Which one of the following oscillators uses inductive feedback?HartleyColpittsClappAll of the aboveHintThe hartley oscillator uses inductive feedback 25). Which one of the following uses capacitive feedback?HartleyColpittsClappAll of the aboveHintThe Colpitts uses capacitive feedback whereas the hartley doesn't useMultistage Transistor Amplifiers MCQ's for Interviews 26). Which one of the following coupling costs is the least?RC couplingTransformerDirectNone of the aboveHintThe direct coupling cost is least compared to other couplings 27). The space and weight is least in ______________ couplingRC couplingTransformerDirectNone of the aboveHintThe space and weight is least in direct coupling 28). What are the disadvantages of LC oscillators?Waveform is poorFrequency instabilityInductors are bulky and expensiveAll of the aboveHintIn LC oscillators the waveforms are poor, frequency is unstable, and the inductors are bulky and expensive 29). ________________ are the factors that affects the frequency of an oscillatorPower supply variationsChanges in temperatureChanges in loadAll of the aboveHintThe power supply variations, changes in temperature, and changes in load are the factors that affect the frequency of an oscillator 30). What are the advantages of multistage amplifiers?Improvement in gainWe will get improved Q-pointWe will get improved input and output impedanceAll of the aboveHintThe improvement in gain, improved Q-point, and the improved input and output impedance are the advantages of multistage amplifiers 31). What are the disadvantages of multistage amplifiers?Bandwidth of multistage amplifier is lowCircuit becomes complexCost will increaseAll of the aboveHintThe bandwidth of the multistage amplifier is low, less space and weight, and the cost will increase 32). What are the advantages of RC coupling?Simple networkCost-effectiveLess space and weightAll of the aboveHintThe advantages of RC coupling is its network is simple, cost-effective, and the space and weight is less 33). What are the disadvantages of RC coupling?Not good for impedance matchingNot great gainNoise is highAll of the aboveHintIn RC coupling the noise is high, and it is not good for impedance matching 34). The efficiency is ________________ in class A amplifier1%20%25%100%HintThe efficiency is 25% in class A amplifier but if we change the coupling the efficiency can extend up to 50% 35). The angle of conduction is ___________________ degree in class C amplifierZero360<18090HintThe angle of conduction is less than 180 degrees in class C amplifier 36). The angle of conduction is ___________________ degree in class AB amplifierzero360More than 180 but less than 36090HintThe angle of conduction is more than 180 but less than 360 degrees in a class AB amplifier 37). What are the disadvantages of direct coupling?Efficiency is very lessPoor Q point stabilityBoth a and bNone of the aboveHintIn direct coupling the efficiency is very less and it has poor Q point stability 38). What are the advantages of direct coupling?Cost-effectiveSimple circuitGood impedance matching and frequency responseAll of the aboveHintThe advantages of direct coupling are they are cost-effective, simple circuit, and has good impedance matching and frequency response 39). What are the disadvantages of transformer coupling?BulkyCostly and require more spaceFrequency distortion is highAll of the aboveHintThe disadvantages of transformer coupling are they are bulky, costly, and require more space, and the frequency by distortion is high 40). The angle of conduction is ___________________ degree in class A amplifierzero360More than 180 but less than 36090HintThe angle of conduction is 360 degrees in class A amplifier 41). The angle of conduction is ___________________ degree in class B amplifierzero36018090HintThe angle of conduction is 180 degree in class B amplifier 42). The circuit efficiency is _________________ in class B amplifier1%20%78.5%100%HintThe circuit efficiency is 78.5% in class B amplifier 43). The circuit efficiency is _________________ in class AB amplifier1%20%78.5%100%HintThe circuit efficiency is 78.5% in class AB amplifier 44). The circuit efficiency is _________________ in class C amplifier1%20%78.5%95%HintThe circuit efficiency is 95% in class C amplifier 45). The position of operating point is __________ in class A amplifierExactly at the center of the load lineOn X-axisJust above X-axisBelow X-axisHintThe position of the operating point is exactly at the center of the load line in class A amplifier 46). The position of operating point is __________ in class B amplifierExactly at the center of the load lineOn X-axisJust above X-axisBelow X-axisHintThe position of the operating point is on the X-axis in the class B amplifier 47). The distortions are ________________ in class A amplifierMinimum or no distortionDistortions are more than class CDistortions are more than class ABNone of the aboveHintThe distortions are minimum or no distortion in class A amplifier 48). The distortions in class B amplifier are more than class ________________ amplifierClass AClass ABBoth a and bNone of the aboveHintThe distortions in class B amplifier are more than class A and class AB amplifiers 49). The distortions in class B amplifier are less than class ________________ amplifierClass AClass ABClass CNone of the aboveHintThe distortions in class B amplifier are less than class C amplifier 50). The position of operating point is __________ in class C amplifierExactly at the center of the load lineOn X-axisJust above X-axisBelow X-axisHintThe position of the operating point is below the X-axis in the class C amplifierMultistage Transistor Amplifiers MCQ's for Exams 51). The position of operating point is __________ in class AB amplifierExactly at the center of the load lineOn X-axisJust above the X-axisBelow X-axisHintThe position of the operating point is just above the X-axis in the class AB amplifier 52). The collector coupled bistable multivibrator is categorized into _________________ typesOneFourTwoThreeHintThe collector coupled bistable multivibrator is categorized into two types they are fixed bias bistable multivibrator, and self bias bistable multivibrator 53). The bistable multivibrators are categorized into _________________ typesOneFourTwoThreeHintThe bistable multivibrators are categorized into two types they are collector coupled bistable multivibrator and emitter-coupled bistable multivibrator 54). Which one of the following amplifiers is used as an audio power amplifier?Class AClass BClass CClass ABHintThe class C amplifier is used as an audio power amplifier 55). Which one of the following amplifiers is used as an RF amplifier?Class AClass BClass CClass ABHintThe class AB amplifier is used as an RF amplifier 56). The class A amplifiers are used in _________________ amplifiersRF amplifiersAudio amplifiersOutdoor musical systemAll of the aboveHintThe class A amplifiers are used in RF amplifiers, audio amplifiers, and outdoor musical systems 57). The distortions are maximum in ________________ amplifierClass AClass CClass ABHintThe distortions are maximum in class C amplifier 58). The distortions in class AB amplifiers are more than __________________ amplifierClass AClass BClass CClass ABHintThe distortions in class AB amplifiers are more than class A amplifier 59). The distortions in class AB amplifiers are less than __________________ amplifierClass AClass BClass CBoth b and cHintThe distortions in class-AB amplifiers are less than class B and C amplifier 60). The large signal tuned amplifiers are used to amplify ________________ signalsLow-frequency signalsLarge RF signalsBoth a and bNone of the aboveHintThe large signal tuned amplifiers are used to amplify large RF signals 61). The small-signal tuned amplifiers are operated in ________________ modeClass AClass BClass CBoth b and cHintThe small-signal tuned amplifiers are operated in class A mode 62). The power output is more in ________________ tuned amplifierSmall signalLarge signalBoth a and bNone of the aboveHintThe power output is more in large-signal tuned amplifier 63). The small-signal tuned amplifier are used to amplify __________________ signalsHigh frequencyLow frequencyVery low frequencyNone of the aboveHintThe small signal tuned amplifier are used to amplify low frequency signals 64). The small signal tuned amplifiers are categorized into ___________________ typesOneFourTwoThreeHintThe small-signal tuned amplifiers are categorized into three types they are single tuned, double-tuned, and staggered tuned amplifiers 65). The power output is low in ________________ tuned amplifierSmall signalLarge signalBoth a and bNone of the aboveHintThe power output is low in small signal tuned amplifier 66). The single tuned amplifiers are categorized as ______________________ typesOneFourTwoThreeHintThe single tuned amplifiers are categorized into two types they are capacitive coupled and transformer-coupled tuned amplifiers 67). The ratio of susceptance of inductance or capacitance divided by the conductance of shunt resistance is known as _______________Q effective equivalent Q factorOverall gainPower gainNone of the aboveHintThe ratio of susceptance of inductance or capacitance divided by the conductance of shunt resistance is known as Q effective equivalent Q factor 68). How many types of astable multivibrators are there?OneFourTwoThreeHintThere are two types of astable multivibrators are there they are, collector, coupled astable multivibrator, and emitter-coupled astable multivibrator 69). The distortions are categorized into _____________________ typesOneFourTwoThreeHintThe distortions are categorized into four types they are non-linear, frequency, phase, and intermodulation distortions 70). How many connections do feedback networks have?OneFourTwoThreeHintThe feedback networks have three connections they are sampling, feedback, and mixer network 71). What are the features of negative feedback amplifiers?Overall gain and distortion is reducedNoise is reducedBandwidth and stability is improvedAll of the aboveHintThe features of negative feedback amplifiers are overall gain and distortion is reduced, noise is reduced, bandwidth and stability is improved 72). In which one of the following amplifiers the input voltage is low?VoltageCurrentBoth a and bNone of the aboveHintIn voltage amplifier the input voltage is low 73). The collector current is low in _______________ amplifierVoltageCurrentBoth a and bNone of the aboveHintThe collector current is low in the voltage amplifier 74). The average AC power output divided by average DC power input to transistor is known as ________________ efficiencyEmitterCollectorBaseNone of the aboveHintThe average AC power output divided by average DC power input to the transistor is known as collector efficiency 75). The output impedance is low in __________________ amplifierVoltageCurrentPowerNone of the aboveHintThe output impedance is low in the power amplifierMultistage Transistor Amplifiers MCQ's for Quiz 76). The input impedance in common base is from ________________10 to 20 ohms20 to 30 ohms50 to 200 ohms1 to 2 ohmsHintThe input impedance in the common base is from 50 to 200 ohms 77). The large signal tuned amplifiers are operated in _________ modesClass BClass C or class ABBoth a and bNone of the aboveHintThe large signal tuned amplifiers are operated in class B, class C, or class AB modes 78). Which one of the following is a type of small-signal tuned amplifier?SingleDoubleStaggerAll of the aboveHintThe single tuned amplifier, double-tuned amplifier, and the stagger tuned amplifier are the types of small-signal tuned amplifier 79). Which one of the following tuned amplifiers uses only one parallel tuned circuit?Single tuned amplifierDouble tuned amplifierStagger tuned amplifierAll of the aboveHintThe single tuned amplifier uses only one parallel tuned circuit 80). Which one of the following tuned amplifiers uses two mutually coupled tuned circuits?Single tuned amplifierDouble tuned amplifierStagger tuned amplifierAll of the aboveHintThe double-tuned amplifier uses two mutually coupled tuned circuits 81). What are the advantages of tuned amplifiers?Has high selectivityHave small power lossBoth a and bNone of the aboveHintThe tuned amplifiers have high selectivity and low power loss 82). Which one of the following is a type of multi-stage amplifier?SingleDoubleStaggerAll of the aboveHintThe stagger tuned amplifier is a type of multi-stage amplifier 83). The output signal is not distorted in __________________ amplifierClass AClass BClass ABNone of the aboveHintThe output signal is not distorted in class A amplifier 84). The input impedance in common emitter is from ________________10 to 20 ohms20 to 30 ohms500 to 2000 ohms1 to 2 ohmsHintThe input impedance in the common-emitter is from 500 to 2000 ohms 85). The transistor with high beta is used in _________________ amplifierVoltagePowerBoth a and bNone of the aboveHintThe transistor with high beta is used in the voltage amplifier 86). In which one of the following amplifiers the heat sink is not necessary?VoltagePowerBoth a and bNone of the aboveHintIn voltage amplifier the heat sink is not necessary Read more about Amplifiers 87). The current gain in common emitter is from _________________20 to 20010 to 10020 to 401 to 5200HintThe current gain in the common-emitter is from 20 to 200 88). The current gain in common base is from _________________20 to 20010 to 10020 to 40<1HintThe current gain in the common base is less than one 89). The current gain in common collector is from _________________20 to 20010 to 10020 to 40<1HintThe current gain in the common collector is from 20 to 200 90). The voltage gain is _________________ in common emitter20 to 200100 to 100020 to 40<1HintThe voltage gain is 100 to 1000 in the common-emitter 91). The voltage gain is _________________ in the common base20 to 200100 to 1000500 to 800<1HintThe voltage gain is 500 to 800 in common base 92). The voltage gain is _________________ in the common collector20 to 200100 to 1000500 to 800<1HintThe voltage gain is less than one in the common collector 93). The output impedance in common emitter is from ____________10 K to 50 K ohms100 K to 500 K ohms1 K to 50 K ohms0.5 K to 50 K ohmsHintThe output impedance in the common-emitter is from 10 K to 50 K ohms 94). The output impedance in the common-emitter is from 10 K to 50 K ohms10 K to 50 K ohms100 K to 1 M ohms1 K to 50 K ohms0.5 K to 50 K ohmsHintThe output impedance in the common base is from 100 K to 1 M ohms 95). The small size transistors are used in _______________ amplifierVoltagePowerBoth a and bNone of the aboveHintThe small size transistors are used in the voltage amplifier 96). The transistor with low beta is used in _________________ amplifierVoltagePowerBoth a and bNone of the aboveHintThe transistor with low beta is used in type of power amplifier 97). The power transistor size is large in _____________ amplifierVoltagePowerBoth a and bNone of the aboveHintThe power transistor size is large in power amplifier 98). The output impedance in common collector is from ____________20 to 500 ohms100 K to 500 K ohms1 K to 50 K ohms0.5 K to 50 K ohmsHintThe output impedance in the common collector is from 20 to 500 ohms 99). The RC coupling is widely used in __________________ amplifierVoltagePowerBoth a and bNone of the aboveHintThe RC coupling is widely used in voltage amplifier 100). The transformer coupling is widely used in ________________ amplifierVoltagePowerBoth a and bNone of the aboveHintThe transformer coupling is widely used in power amplifier Time is Up! Time's up
