Analog Circuits Question & AnswersDecember 27, 2021 By WatElectronics This article lists 100 Analog Circuits MCQs for Engineering Students. All the Analog Circuits Questions & Answers given below includes solution and link wherever possible to the relevant topic.Electronics is a branch that deals with the flow of charge carriers in diodes as well as FETs and BJT’s. The analog circuits, digital circuits, and mixed-signal circuits are the type of electronic circuits. The analog, digital, and mixed-signal circuits all are types of electronic circuits. The analog electronics are bigger, consist of distortion & noise, and consume more power. When we look at electronic gadgets which contain digital and analog circuitry, then they primarily require DC supply, so the supply that we get to our homes and laboratories are the line supplies which is AC. In analog circuits, the input and output will be in analog format, and the circuits will consist of semiconductor devices.The input and output are in digital format in digital circuits whereas in analog circuits both output and inputs will be in analog format, whereas in the mixed-signal circuit the input is analog and the output is digital or the input will be digital output will be analog. The analog signals use a continuous range of values to represent the information. The human voice in the air, analog electronic devices are a few examples of analog signals, and the analog signals are stored in the form of wave signals.The analog electronics help to capture the data from a system whereas the power electronics help to operate the system and they have very low electrical safety hazards whereas the power electronics have a high electrical safety hazard.1). In which one of the following circuits both output and input will be in analog format? Analog Digital Both a and b None of the above HintThe input and output in digital format in digital circuits whereas in analog circuits both output and inputs will be in analog format2). In which one of the following circuits both output and input will be in digital format? Analog Digital Both a and b None of the above HintThe input and output in digital format in digital circuits whereas in analog circuits both output and inputs will be in analog format3). In which one of the following circuits the input is analog and the output is digital or the input will be digital and the output will be analog? Analog Digital Mixed None of the above HintThe input is analog and the output is digital in mixed-signal circuits4). Which one of the following is a type of electronic circuit? Analog Digital Mixed All of the above HintThere are three types of electronic circuits they are analog, digital, and the mixed-signal circuits5). The diode is a semiconductor device which is made of ____________ type of materials One Two Three Four HintThe P-type and N-type materials are used to make the diode6). In which material will have an excess of holes? P-type N-type Both a and b None of the above HintThe excess of holes present in P-type materials7). In which material will have an excess of electrons? P-type N-type Both a and b None of the above HintThe excess of electrons present in N-type materials8). In how many ways does the diode can operate? One Two Three Four HintDiodes operates in both forward and reverse bias9). What are the applications of diodes? Rectifiers Clippers Clampers All of the above HintThe applications of diodes include rectifiers, clippers, clampers, etc10). Which one of the following is a type of rectifier? Center tapped Clippers Clampers All of the above HintThe clippers and clampers are not a type of rectifiers11). How many types of clippers are there? One Two Seven Five HintThe positive & negative, series & parallel, combination, biased & unbiased clippers are the type of clippers12). In which type of clipper the portion of the negative peak will be removed? Positive clipper Negative clipper Combination clipper None of the above HintIn the negative type of clipper, the portion of the negative peak will be removed13). In which type of clipper the portion of the positive peak will be removed? Positive clipper Negative clipper Combination clipper None of the above HintIn positive type of clipper the portion of the positive peak will be removed14). In which type of clipper both the positive and negative clippers will be removed? Positive clipper Negative clipper Combination clipper None of the above HintIn combination type of clipper, both the positive and negative clippers will be removed15). When load is connected in parallel to diode circuit that is known as _____________ clipper Positive clipper Negative clipper Parallel clipper None of the above HintWhen the load is connected in parallel to diode circuit that is known as a parallel clipper16). When load is connected in series to diode circuit that is known as _____________ clipper Positive clipper Negative clipper Series clipper None of the above HintWhen the load is connected in series to a diode circuit that is known as a series clipper17). In which one of the following clippers will have a voltage source? Positive clipper Unbiased clipper Biased clipper None of the above HintIn biased clippers will have a voltage source18). What are the advantages of tuned amplifiers? Minimize the power loss Frequency is high Suitable for all radio transmitters & receivers All of the above HintThe tuned amplifiers are suitable for all radio transmitters & receivers19). What are the disadvantages of tuned amplifiers? L & C are bulky & costly Complexity to design the circuit Not suitable for audio frequency applications All of the above HintHint: The tuned amplifiers are not suitable for audio frequency applications20). For proper functioning, the minimum input voltage is ________________ in IC 7805 7V 5V 10V 15V HintFor proper functioning, the minimum input voltage is 7V in IC 780521). In case of diode the standard form of PIV is ____________________ Peak Interior Value Peak Inverse Voltage Peak Interior Voltage None of the above HintIn the case of diode the standard form of PIV is Peak Inverse Voltage22). For germanium the ideality factor or emission coefficient is __________________ One Seven Four Six HintFor germanium, the ideality factor or emission coefficient is one23). For silicon the ideality factor or emission coefficient is __________________ One Two Four Six HintFor silicon, the ideality factor or emission coefficient is two24). The reverse saturation current ____________ when temperature decreases Increases Decreases Either increase or decreases Constant HintThe reverse saturation current increases when temperature decreases25). When the temperature is 25 degree centigrade, the thermal voltage is ______________ One Two Four Zero HintThe thermal voltage is zero when the temperature is 25 degrees centigradeAnalog Circuit Quiz Questions and Answers26). An active device ______________ controls the electron flow Electrically Mechanically Pneumatically None of the above HintAn active device electrically controls the electron flow27). What is the unit of gain? Joules Ohms Unit less Amperes HintThere is no unit for gain, so the gain is unitless28). For the manufacturer of Zener diode ________________ material is used Silicon Arsenic Germanium None of the above HintThe silicon material is used for the manufacturer of Zener diode29). The ______________ material is used to make light-emitting diodes Silicon Arsenic Germanium GaAsP HintHint:The Gallium Arsenide Phosphide is used to make light-emitting diodes30). Which one of the following signals is a continuous and naturally occurring or physically occurring signal? Analog signal Digital signal Both a and b None of the above HintThe digital signals are not continuous31). Which one of the following signals is discrete, not continuous, not naturally occurring, or physically occurring signal? Analog signal Digital signal Both a and b None of the above HintThe analog signal is a continuous and naturally occurring or physically occurring signal32). What are the advantages of digital signals? More immune to noise They are easy to process They are easily reproducible All of the above HintThe digital signals are more immune to noise, easy to process, and easily reproducible33). Which one of the following is an example of digital circuits? Microprocessor Encoders Memory elements All of the above HintThe microprocessors, encoders, memory elements are a few examples of digital circuits34). What are the advantages of analog systems? This is a physical signal Analog to analog processing directly that could be much faster Both a and b None of the above HintThe advantages of analog systems are it is a physical signal, and the analog to analog processing directly could be much faster35). How many types of biasing circuits are there? One Two Three Four HintThe self-bias and the voltage divider bias are the two types of biasing circuits36). Which one of the following FET is easier to fabricate? MOSFET JFET Both a and b None of the above HintThe junction field-effect transistor is not easier to fabricate37). Which one of the following FET operates only in depletion mode? MOSFET JFET Both a and b None of the abovev HintThe MOSFET operates in both enhancement and depletion mode but the JFET operates only in depletion mode38). The drain resistance of a junction field-effect transistor is about ___________ 0.1 to 1MΩ 1 to 10MΩ 0.1 to 5MΩ 0.1 to 9MΩ HintThe drain resistance of a junction field-effect transistor is about 0.1 to 1MΩ39). The gate leakage current of a junction field-effect transistor is around _________________ 10^-1 A 10^-3 A 10^-4 A 10^-9 A HintThe gate leakage current of a junction field-effect transistor is around 10^-9 A40). The input resistance of a junction field-effect transistor is around _________ 10^2 A 10^4 A 10^8 A 10^-9 A HintThe input resistance of a junction field-effect transistor is around 10^-9 A41). The gate leakage current of a metal oxide semiconductor field-effect transistor is around _________ 10^2A 10^8A 10^20A 10^12A HintThe gate leakage current of a metal oxide semiconductor field-effect transistor is around 10^12A42). The input resistance of a metal oxide semiconductor field-effect transistor is between _________ 0.1 to 1MΩ 10^10 to 10^15 Ω 0.1 to 5MΩ 0.1 to 9MΩ HintThe input resistance of a metal oxide semiconductor field-effect transistor is between 10^10 to 10^15 Ω43). What are the important characteristics of junction field-effect transistor? Drain or VI characteristics Transfer characteristics Both a and b None of the above HintThe drain or VI and transfer are the important characteristics of junction field-effect transistor44). How many regions do the output characteristics of common base configuration have? One Two Three Four HintThe output characteristics of common base configuration have three regions they are active region, saturation region, and cutoff region45). Which one of the following configurations has voltage gain but no current gain? Common emitter Common Base Common Collector None of the above HintThe common base configuration has an only voltage gain46). Which one of the following configurations has both voltage and current gain? Common emitter Common Base Common Collector None of the above HintThe common base and common collector configurations have only one gain that is either current or voltage gain, but common-emitter has both gains47). Which one of the following configurations has current gain but no voltage gain? Common emitter Common Base Common Collector None of the above HintThe common collector configuration has an only current gain48). The ratio of current of injected carrier saturation JE divided by total emitter current is known as _________________ efficiency Emitter Collector Base None of the above HintThe ratio of current of injected carrier saturation JE divided by total emitter current is known as emitter efficiency49). The ratio of current of injected carrier current reaching Jc divided by injected carrier current at JE is known as _________________ efficiency Transport factor Collector efficiency Base efficiency None of the above HintThe ratio of current of injected carrier current reaching Jc divided by injected carrier current at JE is known as transport factor efficiency50). The resistivity value for copper material is around _______________ 10^1 Ω-cm 10^-6 Ω-cm 10^12 Ω-cm 10^6 Ω-cm HintThe resistivity value for copper material is around 10^-6 Ω-cmAnalog Circuit Interview Questions and Answers51). The resistivity value for silicon material is around _______________ 10^1 Ω-cm 50 x 10^3 Ω-cm 10^12 Ω-cm 10^6 Ω-cm HintThe resistivity value for silicon material is around 50 x 10^3 Ω-cm52). The resistivity value for germanium material is around _______________ 10^1 Ω-cm 50 x 10^3 Ω-cm 50 Ω-cm 10^6 Ω-cm HintThe resistivity value for germanium material is around 50 Ω-cm53). The resistivity value for mica material is around _______________ 10^12 Ω-cm 50 x 10^3 Ω-cm 50 Ω-cm 10^6 Ω-cm HintThe resistivity value for mica material is around 10^12 Ω-cm54).The Hartley oscillator recommended frequency range is between _____________ 30 kHz – 30 MHz 100 Hz – 300 MHz 1 Hz – 10 MHz 1 Hz – 5 MHz HintThe Hartley oscillator recommended frequency range is not above 300 MHz and not below 30 kHz55). Which one of the following feedback is used in the Hartley oscillator? Voltage series Voltage shunt Current series Current shunt HintThe feedback which is used in the Hartley oscillator is voltage series56). For sustained oscillation the hartley oscillator uses _____________ feedback Positive Negative Both a and b None of the above HintThe hartley oscillator uses positive feedback for sustained oscillation57). The hartley oscillator frequency is expressed as _______________ 1/2∏√LC 1/√LC 1/4∏√LC 1/∏√LC HintThe hartley oscillator frequency is expressed as 1/2∏√LC Read more about Hartley Oscillators58). The inductance L1 is 1mH, L2 is 2mH, C=10nF, then the oscillator frequency of hartley oscillator is _______________ 10KHz 17KHz 1KHz 29KHz HintThe oscillator frequency calculated by formula 1/2∏√LC59). In hartley oscillator the gain device act as a ____________ pass filter High Low Band None of the above HintIn the hartley oscillator, the gain device acts as a bandpass filter60). The frequency range of high frequency oscillators are between ________________ 100KHz-2GHz 200KHz-2GHz 300KHz-2GHz 400KHz-2GHz HintThe frequency range of high frequency oscillators are between 300KHz-2GHz61). The frequency range of low frequency oscillators are between ________________ 20Hz-100KHz 200KHz-2GHz 300KHz-2GHz 400KHz-2GHz HintThe frequency range of low-frequency oscillators are between 20Hz-100KHz62). Which one of the following oscillators is used in timing elements? RC LC Crystal None of the above HintThe crystal oscillator is used in timing elements63). The sinusoidal oscillators are also known as ____________ oscillators Harmonic RC LC Crystal HintThe sinusoidal oscillators are also known as harmonic oscillators64). Which one of the following oscillators is not a type of LC oscillator? Harmonic Hartley Clapp Crystal HintThe harmonic and hartley both are the type of LC oscillators65). _______________ are the few examples of non-sinusoidal oscillators Sawtooth generators Multivibrator Blocking oscillators All of the above HintThe sawtooth generators, multivibrators, blocking oscillators, are the few examples of non-sinusoidal oscillators66). ______________ are the few oscillators used in low frequency oscillations RC RC phase shift Wein bridge All of the above HintThe RC, RC phase shift, Wein bridge are the few oscillators used in low-frequency oscillations67). The feedback factor is _________________ for RC phase shift oscillator 1/10 1/20 1/29 1/3 HintThe feedback factor is 1/29 for RC phase shift oscillator68). In the output of RC phase shift network the direction level will be ____________ >10% >12% >30% <5% HintIn the output of the RC phase shift network the direction level will be less than 5%69). Which one of the following is a part of electronics engineering? Analog electronics Digital electronics Power electronics Both a and b HintThe analog and digital electronics is a part of electronics engineering70). Which one of the following works with the continuous variable signal? Analog electronics Digital electronics Power electronics None of the above HintThe analog electronics work with continuous variable signal71). Which one of the following works with low current and low voltage? Analog electronics Digital electronics Power electronics Both a and b HintThe analog electronics work with low current and low voltage72). Which one of the following doesn’t work with high current and high voltage? Analog electronics Digital electronics Power electronics Both a and b HintThe analog and digital electronics both doesn’t work with high current and high voltage73). Which one of the following electronics mainly delays with wireless transmission, amplification, and rectification of electronic signals? Analog electronics Digital electronics Power electronics Both a and b HintThe analog electronics mainly delays with wireless transmission, amplification, and rectification of electronic signals74). Which one of the following electronics mainly delays with the control inversion, inversion, and rectification of small to large electrical power? Analog electronics Digital electronics Power electronics Both a and b HintThe power electronics mainly delays with the control inversion, inversion, and rectification of small to large electrical power75). Which one of the following electronics uses both passive and active components? Analog electronics Digital electronics Power electronics Both a and b HintThe power electronics uses both passive and active componentsAnalog Circuit Important Questions for Interviews Read more about Analog Circuits76). Which one of the following electronics uses mostly passive but sometimes active components? Analog electronics Digital electronics Power electronics Both a and b HintThe analog electronics uses mostly passive but sometimes active components77). Which one of the following electronics has high noise and distortion? Analog electronics Digital electronics Power electronics Both a and b HintThe analog electronics has high noise and distortion78). Which one of the following electronics has low noise and distortion? Analog electronics Digital electronics Power electronics Both a and b HintThe power electronics has low noise and distortion79). In which one of the following electronics the power loss is low? Analog electronics Digital electronics Power electronics Both a and b HintIn analog electronics the power loss is low80). In which one of the following electronics the power loss is high? Analog electronics Digital electronics Power electronics Both a and b HintIn power electronics the power loss is high81). Which one of the following electronics helps to capture the data from a system? Analog electronics Digital electronics Power electronics Both a and b HintThe analog electronics helps to capture the data from a system82). Which one of the following electronics helps to operate the system? Analog electronics Digital electronics Power electronics Both a and b HintThe power electronics help to operate the system83). In which one of the following electronics has a very low electrical safety hazard? Analog electronics Digital electronics Power electronics Both a and b HintIn analog electronics have a very low electrical safety hazard84). In which one of the following electronics has high electrical safety hazards? Analog electronics Digital electronics Power electronics Both a and b HintIn power electronics has high electrical safety hazard85). Which one of the following is an example for analog electronics? Digital clocks SMPS FM Radios None of the above HintThe FM radios is an example of analog electronics86). Which one of the following is not an example for analog electronics? Digital clocks Televisions FM Radios Telephones HintThe digital clocks is not an example of analog electronics87). Which one of the following is an example of power electronics? Digital clocks Televisions FM Radios VFD HintThe VFD is an example of power electronics88). Which one of the following signal stores in the form of wave signal? Analog Digital Both a and b None of the above HintThe analog signals stored in the form of the wave signal89). The human voice in the air, analog electronic devices are a few examples of ___________ signal Analog Digital Both a and b None of the above HintThe human voice in the air, analog electronic devices are a few examples of analog signal90). Which one of the following signals uses a continuous range of values to represent the information? Analog Digital Both a and b None of the above HintThe analog signals use a continuous range of values to represent the information91). Which one of the following signals is denoted by sine waves? Analog Digital Both a and b None of the above HintThe analog signal denoted by sine waves92). What are the limitations of analog electronics? Bigger in size Consists of distortion and noise Consumes more power All of the above HintThe analog electronics are bigger, consist of distortion & noise, and consumes more power93). The bipolar junction transistor in common emitter amplifier can be treated as ___________ amplifier Inverting Non-inverting Latching circuit None of the above HintThe bipolar junction transistor in a common emitter amplifier can be treated as inverting amplifier94). The varactor diode is used for _____________ purpose Amplification Regulation Tuning None of the above HintThe varactor diode is used for tuning purpose95). The power factor of an alternating current circuit is given by ____________ Z/R R/Z XL/R None of the above HintThe power factor of an alternating current circuit is given by XL/R96). Which one of the following current-voltage characteristics graphs represents the constant voltage drop model of a diode? Fig A Fig B Fig C Fig D HintFigure b current-voltage characteristics graph represents the constant voltage drop model of a diode97). Which one of the following graphs represents a typical germanium diode? Fig A Fig B Fig C Fig D HintThe figure a graph represents a typical germanium diode98). Which one of the following current-voltage characteristics graphs represents a silicon diode? Fig A Fig B Fig C Fig D HintThe figure b current-voltage characteristics graph represents a silicon diode99). Which one of the following current-voltage characteristics graphs represents a real diode? Fig A Fig B Fig C Fig D HintThe figure D graph is a current-voltage characteristic of a real diode Read more about Diodes100). The diode in forward bias in an ideal diode model is considered as ____________ Perfect conductor Resistor Capacitor Insulator HintThe diode in forwarding bias in an ideal diode model is considered a perfect conductor Time is Up! Time's up
