Single Stage Transistor Amplifier Question & Answers November 2, 2021 By WatElectronics This article lists 100 Single-Stage Transistor Amplifier MCQs for Engineering Students. All the Single-Stage Transistor Amplifier Questions & Answers given below includes solution and link wherever possible to the relevant topic. In a single-stage transistor amplifier, the circuit has only one transistor with associated circuitry. The biasing circuit, input capacitor, emitter bypass capacitor, and coupling capacitor are the circuit elements. The single-stage amplifiers are the most convenient and least expensive amplifiers, and it provides high audio fidelity and low-frequency distortion. The tuned voltage amplifiers are categorized into two types they are single tuned voltage amplifier and double tuned voltage amplifier. The tuned amplifiers have high selectivity, low power loss, and very small harmonic distortion and they are used in IF, RF amplifiers, radar, television, etc. The doubled-tuned amplifier uses two inductively coupled circuits. The single tuned amplifiers are classified into two types they are capacitively coupled and transformer-coupled. The transformer-coupled amplifiers are costly, bulky, have high-frequency distortion, are efficient in operation, gain achieved is higher, and there will be no power loss in base and collector resistors. The RC coupled transformer coupled, and direct-coupled amplifiers are the type of amplifiers based on the coupling method whereas the class A, B, C, and class AB amplifiers are the type of amplifiers based on the biasing condition. The disadvantages of RC coupled amplifiers are the power transformer, voltage & power gain are low, and they become noisy with age the advantages of the RC coupled amplifiers are they are cheap and compact. 1). How many types of load lines are there? One Two Three Four None Hint 2). The tuned voltage amplifiers are categorized into __________ types One Two Three Four None Hint 3). We generally use _____________ capacitors in transistor amplifiers Add description here! Mica Electrolytic Both a and b None of the above None Hint 4). How many types of gains are there? One Two Three Four None Hint 5). The current gain of a common-base amplifier is __________ <1 <0.5 <0.1 >5 None Hint 6). ______________ are the building block in single transistor amplifier stages Common source, common gate Source follower, series feedback Shunt feedback All of the above None Hint 7). The _______________ amplifiers are the type of amplifiers based on the number of stages Single-stage amplifier Multi-stage amplifier Both a and b None of the above None Hint 8). The _______________ amplifiers are the type of amplifiers based on the number of stages Single-stage amplifier Multi-stage amplifier Voltage and power amplifiers None of the above None Hint 9). The voltage gain in common-collector amplifier is ______________ Less than unity Less than one Greater than one None of the above None Hint 10). How many types of couplings are there? One Two Three Four None Hint 11). The _______________ amplifiers are the type of amplifiers based on the transistor configuration CE amplifier CC amplifier CB amplifier All of the above None Hint 12). What are the disadvantages of the transformer-coupled amplifier? Bulky Costly Frequency distortion is higher All of the above None Hint Read more about Transformer 13). What are the advantages of a transformer-coupled amplifier? Efficient in operation Gain achieved is higher No power loss in base and collector resistors All of the above None Hint 14). The _________ amplifiers are the type of amplifiers based on the coupling method RC coupled Transformer coupled Direct coupled All of the above None Hint 15). The _________ amplifiers are the type of amplifiers based on the biasing condition Class A, Class B Class C Class AB All of the above None Hint 16). What are the disadvantages of an RC coupled amplifier? Power transformer will be low Voltage and power gain are low They become noisy with age All of the above None Hint 17). What are the advantages of an RC coupled amplifier? Cheap Compact Both a and b None of the above None Hint 18). The _________ amplifiers are the type of amplifiers based on the frequency response Audio frequency Intermediate frequency Radiofrequency All of the above None Hint 19). The _________ amplifiers are the type of amplifiers based on the input signals Small signal & large signal Audio and power RC coupled, Direct-coupled All of the above None Hint 20). Which one of the amplifiers is not suitable for cascading? CB amplifier CC amplifier CE amplifier None Hint 21). In which one of the following amplifiers the voltage gain is greater than unity? CB amplifier CC amplifier CE amplifier All of the above None Hint 22). Which one of the amplifiers is not suitable for intermediate stages? CB amplifier CC amplifier CE amplifier All of the above None Hint 23). The base current, collector current, and emitter current are the various circuit ___________ Elements Currents Both a and b None of the above None Hint 24). The biasing circuit, input capacitor, emitter bypass capacitor, coupling capacitor are the various circuit _______ Elements Currents Both a and b None of the above None Hint 25). The doubled tuned amplifier uses ______________ inductively coupled circuits One Two Three Four None Hint Single Stage Transistor Amplifiers MCQ's for Interviews 26). The single tuned amplifiers are classified into _____________ types One Two Three Four None Hint 27). The small-signal tuned amplifiers are used to __________ Amplify low RF signals Operated in class A Power output is low All of the above None Hint 28). The large signal tuned amplifiers are used to __________ Amplify large RF signals Operated in class B, C, or AB modes Power output is more All of the above None Hint 29). What are the advantages of tuned amplifiers? Selectivity is high Small power loss Harmonic distortion is very small All of the above None Hint 30). The tuned amplifiers are used in _______________ type of amplifiers IF amplifiers Radar, television RF amplifiers All of the above None Hint 31). The heat sinks are categorized into _______________ types One Two Three Four None Hint 32). The class A power amplifiers have ____________ efficiency Lesser High Very high Moderate None Hint 33). Which one of the power amplifiers has more power? Class A Class B Class C Class AB None Hint 34). In which one of the following amplifiers the harmonic distortion is more? Class A Class B Class C Class AB None Hint 35). The series fed and transformer-coupled are the type of _______________ power amplifier Class A Class B Class C Class AB None Hint 36). The push-pull amplifiers and complementary symmetry circuits are the type of ______________ amplifiers Class A Class B Class C Class AB None Hint 37). What are the advantages of class B power amplifiers? More output power Efficiency is higher Negligible power loss at no signal All of the above None Hint 38). In which one of the following power amplifiers the power is less? Class A Class B Class C Class AB None Hint 39). In which one of the following power amplifiers the harmonic distortion is more? Class A Class B Class C Class AB None Hint 40). The power amplifiers are categorized into _______________ types One Two Four Six None Hint 41). In class A power amplifier the active device conducts for the _________ degrees 90 160 180 360 None Hint 42). Which one of the following amplifiers has low input resistance? Common emitter Common Base Common Collector None of the above None Hint 43). The Y-parameters are also known as _______________ parameter Impedance Admittance Hybrid None of the above None Hint 44). The H-parameters are also known as _______________ parameter Impedance Admittance Hybrid None of the above None Hint 45). How many types of parameters are there? One Two Three Six None Hint 46). Which one of the following amplifiers has high input resistance? Common emitter Common Base Common Collector None of the above None Hint None 47). The Z-parameters are also known as _______________ parameter Impedance Admittance Hybrid None of the above None Hint 48). _____________ are the type of amplifiers based on the bandwidth Class A, Class B Voltage amplifier, current amplifier Narrow and wideband amplifier All of the above None Hint 49). ___________ are the characteristics of common base amplifier High voltage gain Small input impedance Large output impedance All of the above None Hint 50). ___________ are the characteristics of common collector amplifier High current gain Large input impedance Small output impedance All of the above None Hint Single Stage Transistor Amplifiers MCQ's for Exams 51). Which one of the following amplifiers has high output resistance? Common emitter Common Base Common collector Both a and b None Hint 52). Which one of the following amplifiers has moderate input resistance? Common emitter Common Base Common Collector None of the above None Hint 53). ______________ are the characteristics of common emitter amplifier Large current gain, large power gain, large voltage gain Moderate input impedance, moderate output impedance Voltage phase shift of 180 degrees All of the above None Hint 54). Which one of the following amplifiers has a large output impedance? Common emitter Common Base Common Collector None of the above None Hint 55). Which one of the following amplifiers has a small input impedance? Common emitter Common Base Common Collector None of the above None Hint 56). The voltage phase shift of 180 degrees is one of the characteristics of _____________ amplifier Common emitter Common Base Common collector None of the above None Hint 57). __________ are the basic configurations for single stage BJT amplifier Common emitter Common Base Common collector All of the above None Hint 58). The FET and BJT transistors are the type of transistors based on _____________ Active device Q-point Number of stages None of the above None Hint 59). How many types of feedbacks are there? One Two Four Six None Hint 60). The output signal of series-shunt feedback amplifier is ____________ Voltage Current Frequency None of the above None Hint 61). The source signal of series-shunt feedback amplifier is ____________ Voltage Current Frequency None of the above None Hint 62). The source signal of shunt-series feedback amplifier is ____________ Voltage Current Frequency None of the above None Hint 63). Based on the magnitudes of the output and input impedance the amplifiers are categorized into _____________ One Two Four Six None Hint 64). The non-linear waveshaping are categorized into ________________ types One Two Four Six None Hint 65). In ______________ multi-vibrator one state is stable but other is not stable Monostable Bistable Astable None of the above None Hint 66). The source signal of series-series feedback amplifier is ____________ Voltage Current Frequency None of the above None Hint 67). The source signal of shunt-shunt feedback amplifier is ____________ Voltage Current Frequency None of the above None Hint 68). In ______________ multi-vibrator neither state is stable Monostable Bistable Astable None of the above None Hint 69). The flip flop is an application of _______________ multivibrator Monostable Bistable Astable None of the above None Hint 70). The timer is an application of _______________ multivibrator Monostable Bistable Astable None of the above None Hint 71). The oscillator is an application of _______________ multivibrator Monostable Bistable Astable None of the above None Hint 72). The output signal of shunt-series feedback amplifier is ________________ Voltage Current Frequency None of the above None Hint 73). The output signal of series-series feedback amplifier is ________________ Voltage Current Frequency None of the above None Hint 74). How many types of multivibrators are there? One Two Four Three None Hint 75). The output signal of shunt-shunt feedback amplifier is ________________ Voltage Current Frequency None of the above None Hint Single Stage Transistor Amplifiers MCQ's for Quiz 76). How many types of clamping circuits are there? One Two Four Three None Hint 77). Which one of the following is an amplifier efficiency formula? AC output power/DC input power (AC output power/DC input power)*100% DC output power/DC input power None of the above None Hint 78). The wave shapings are categorized into ____________ types One Two Four Three None Hint 79). The linear wave shaping is categorized into ____________ types One Two Four Three None Hint 80). The ____________ type of coupling will use in RC coupled amplifier Resistance capacitance No coupling Transformer coupling None of the above None Hint 81). What is the standard form of RC coupling amplifier? Resistance Coupling Resistance Capacitance Resistor Capacitor None of the above None Hint 82). Which type of coupling will use in a transformer-coupled amplifier? Resistance capacitance No coupling Transformer coupling None of the above None Hint 83). Which type of coupling will use in a direct-coupled amplifier? Resistance capacitance No coupling Transformer coupling None of the above None Hint 84). ____________ are the important terms related to amplifiers Gain Frequency response Bandwidth All of the above None Hint 85). The output current divided by the input current is known as ______________ gain Current Voltage Power None of the above None Hint 86). The output voltage divided by the input voltage is known as ______________ gain Current Voltage Power None of the above None Hint 87). The output power divided by the input voltage is known as ______________ gain Current Voltage Power None of the above None Hint 88). The load lines are categorized into _____________ types One Two Four Three None Hint 89). The amplifier circuits analyzed by ______________ method By drawing its equivalent circuit By graphical method Both a and b None of the above None Hint 90). The common base amplifiers are used for __________ frequency applications Audio High frequency Impedance None of the above None Hint 91). The common emitter amplifiers are used for _____________ frequency applications Audio High frequency Impedance None of the above None Hint 92). The common collector amplifiers are used for _____________ Audio High frequency Impedance matching None of the above None Hint 93). The current gain is high in common ____________ amplifier Collector Emitter Base None of the above None Hint 94). The voltage gain is about 150 in common _________________ amplifier Collector Emitter Base None of the above None Hint 95). The voltage gain is about 500 in common _________________ amplifier Collector Emitter Base None of the above None Hint 96). The phase shift is 180 degrees in common __________________ amplifier Collector Emitter Base None of the above None Hint 97). The phase shift is zero degrees in common __________________ amplifier Collector Emitter Base Both a and c None Hint 98). In which one of the following amplifiers the power gain is low? Common collector Common emitter Common base Both a and c None Hint Read more about Amplifiers 99). The voltage gain is less than one in common ________________ amplifier Common collector Common emitter Common base Both a and c None Hint 100). The current gain is appreciable in common ________________ amplifier Common collector Common emitter Common base Both a and c None Hint Time's up
