Analog Circuits Question & Answers December 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 None Hint 2). 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 None Hint 3). 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 None Hint 4). Which one of the following is a type of electronic circuit? Analog Digital Mixed All of the above None Hint 5). The diode is a semiconductor device which is made of ____________ type of materials One Two Three Four None Hint 6). In which material will have an excess of holes? P-type N-type Both a and b None of the above None Hint 7). In which material will have an excess of electrons? P-type N-type Both a and b None of the above None Hint 8). In how many ways does the diode can operate? One Two Three Four None Hint 9). What are the applications of diodes? Rectifiers Clippers Clampers All of the above None Hint 10). Which one of the following is a type of rectifier? Center tapped Clippers Clampers All of the above None Hint 11). How many types of clippers are there? One Two Seven Five None Hint 12). In which type of clipper the portion of the negative peak will be removed? Positive clipper Negative clipper Combination clipper None of the above None Hint 13). In which type of clipper the portion of the positive peak will be removed? Positive clipper Negative clipper Combination clipper None of the above None Hint 14). In which type of clipper both the positive and negative clippers will be removed? Positive clipper Negative clipper Combination clipper None of the above None Hint 15). When load is connected in parallel to diode circuit that is known as _____________ clipper Positive clipper Negative clipper Parallel clipper None of the above None Hint 16). When load is connected in series to diode circuit that is known as _____________ clipper Positive clipper Negative clipper Series clipper None of the above None Hint 17). In which one of the following clippers will have a voltage source? Positive clipper Unbiased clipper Biased clipper None of the above None Hint 18). What are the advantages of tuned amplifiers? Minimize the power loss Frequency is high Suitable for all radio transmitters & receivers All of the above None Hint 19). 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 None Hint 20). For proper functioning, the minimum input voltage is ________________ in IC 7805 7V 5V 10V 15V None Hint 21). In case of diode the standard form of PIV is ____________________ Peak Interior Value Peak Inverse Voltage Peak Interior Voltage None of the above None Hint 22). For germanium the ideality factor or emission coefficient is __________________ One Seven Four Six None Hint 23). For silicon the ideality factor or emission coefficient is __________________ One Two Four Six None Hint 24). The reverse saturation current ____________ when temperature decreases Increases Decreases Either increase or decreases Constant None Hint 25). When the temperature is 25 degree centigrade, the thermal voltage is ______________ One Two Four Zero None Hint Analog Circuit Quiz Questions and Answers 26). An active device ______________ controls the electron flow Electrically Mechanically Pneumatically None of the above None Hint 27). What is the unit of gain? Joules Ohms Unit less Amperes None Hint 28). For the manufacturer of Zener diode ________________ material is used Silicon Arsenic Germanium None of the above None Hint 29). The ______________ material is used to make light-emitting diodes Silicon Arsenic Germanium GaAsP None Hint 30). 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 None Hint 31). 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 None Hint 32). What are the advantages of digital signals? More immune to noise They are easy to process They are easily reproducible All of the above None Hint 33). Which one of the following is an example of digital circuits? Microprocessor Encoders Memory elements All of the above None Hint 34). 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 None Hint 35). How many types of biasing circuits are there? One Two Three Four None Hint 36). Which one of the following FET is easier to fabricate? MOSFET JFET Both a and b None of the above None Hint 37). Which one of the following FET operates only in depletion mode? MOSFET JFET Both a and b None of the abovev None Hint 38). 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 None Hint 39). The gate leakage current of a junction field-effect transistor is around _________________ 10^-1 A 10^-3 A 10^-4 A 10^-9 A None Hint 40). The input resistance of a junction field-effect transistor is around _________ 10^2 A 10^4 A 10^8 A 10^-9 A None Hint 41). The gate leakage current of a metal oxide semiconductor field-effect transistor is around _________ 10^2A 10^8A 10^20A 10^12A None Hint 42). 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 None Hint 43). What are the important characteristics of junction field-effect transistor? Drain or VI characteristics Transfer characteristics Both a and b None of the above None Hint 44). How many regions do the output characteristics of common base configuration have? One Two Three Four None Hint 45). Which one of the following configurations has voltage gain but no current gain? Common emitter Common Base Common Collector None of the above None Hint 46). Which one of the following configurations has both voltage and current gain? Common emitter Common Base Common Collector None of the above None Hint 47). Which one of the following configurations has current gain but no voltage gain? Common emitter Common Base Common Collector None of the above None Hint 48). 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 None Hint 49). 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 None Hint 50). The resistivity value for copper material is around _______________ 10^1 Ω-cm 10^-6 Ω-cm 10^12 Ω-cm 10^6 Ω-cm None Hint Analog Circuit Interview Questions and Answers 51). 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 None Hint 52). 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 None Hint 53). 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 None Hint 54).The Hartley oscillator recommended frequency range is between _____________ 30 kHz – 30 MHz 100 Hz – 300 MHz 1 Hz – 10 MHz 1 Hz – 5 MHz None Hint 55). Which one of the following feedback is used in the Hartley oscillator? Voltage series Voltage shunt Current series Current shunt None Hint 56). For sustained oscillation the hartley oscillator uses _____________ feedback Positive Negative Both a and b None of the above None Hint 57). The hartley oscillator frequency is expressed as _______________ 1/2∏√LC 1/√LC 1/4∏√LC 1/∏√LC None Hint Read more about Hartley Oscillators 58). The inductance L1 is 1mH, L2 is 2mH, C=10nF, then the oscillator frequency of hartley oscillator is _______________ 10KHz 17KHz 1KHz 29KHz None Hint 59). In hartley oscillator the gain device act as a ____________ pass filter High Low Band None of the above None Hint 60). The frequency range of high frequency oscillators are between ________________ 100KHz-2GHz 200KHz-2GHz 300KHz-2GHz 400KHz-2GHz None Hint 61). The frequency range of low frequency oscillators are between ________________ 20Hz-100KHz 200KHz-2GHz 300KHz-2GHz 400KHz-2GHz None Hint 62). Which one of the following oscillators is used in timing elements? RC LC Crystal None of the above None Hint 63). The sinusoidal oscillators are also known as ____________ oscillators Harmonic RC LC Crystal None Hint 64). Which one of the following oscillators is not a type of LC oscillator? Harmonic Hartley Clapp Crystal None Hint 65). _______________ are the few examples of non-sinusoidal oscillators Sawtooth generators Multivibrator Blocking oscillators All of the above None Hint 66). ______________ are the few oscillators used in low frequency oscillations RC RC phase shift Wein bridge All of the above None Hint 67). The feedback factor is _________________ for RC phase shift oscillator 1/10 1/20 1/29 1/3 None Hint 68). In the output of RC phase shift network the direction level will be ____________ >10% >12% >30% <5% None Hint 69). Which one of the following is a part of electronics engineering? Analog electronics Digital electronics Power electronics Both a and b None Hint 70). Which one of the following works with the continuous variable signal? Analog electronics Digital electronics Power electronics None of the above None Hint 71). Which one of the following works with low current and low voltage? Analog electronics Digital electronics Power electronics Both a and b None Hint 72). Which one of the following doesn’t work with high current and high voltage? Analog electronics Digital electronics Power electronics Both a and b None Hint 73). 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 None Hint 74). 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 None Hint 75). Which one of the following electronics uses both passive and active components? Analog electronics Digital electronics Power electronics Both a and b None Hint Analog Circuit Important Questions for Interviews Read more about Analog Circuits 76). Which one of the following electronics uses mostly passive but sometimes active components? Analog electronics Digital electronics Power electronics Both a and b None Hint 77). Which one of the following electronics has high noise and distortion? Analog electronics Digital electronics Power electronics Both a and b None Hint 78). Which one of the following electronics has low noise and distortion? Analog electronics Digital electronics Power electronics Both a and b None Hint 79). In which one of the following electronics the power loss is low? Analog electronics Digital electronics Power electronics Both a and b None Hint 80). In which one of the following electronics the power loss is high? Analog electronics Digital electronics Power electronics Both a and b None Hint 81). Which one of the following electronics helps to capture the data from a system? Analog electronics Digital electronics Power electronics Both a and b None Hint 82). Which one of the following electronics helps to operate the system? Analog electronics Digital electronics Power electronics Both a and b None Hint 83). In which one of the following electronics has a very low electrical safety hazard? Analog electronics Digital electronics Power electronics Both a and b None Hint 84). In which one of the following electronics has high electrical safety hazards? Analog electronics Digital electronics Power electronics Both a and b None Hint 85). Which one of the following is an example for analog electronics? Digital clocks SMPS FM Radios None of the above None Hint 86). Which one of the following is not an example for analog electronics? Digital clocks Televisions FM Radios Telephones None Hint 87). Which one of the following is an example of power electronics? Digital clocks Televisions FM Radios VFD None Hint 88). Which one of the following signal stores in the form of wave signal? Analog Digital Both a and b None of the above None Hint 89). 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 None Hint 90). 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 None Hint 91). Which one of the following signals is denoted by sine waves? Analog Digital Both a and b None of the above None Hint 92). What are the limitations of analog electronics? Bigger in size Consists of distortion and noise Consumes more power All of the above None Hint 93). The bipolar junction transistor in common emitter amplifier can be treated as ___________ amplifier Inverting Non-inverting Latching circuit None of the above None Hint 94). The varactor diode is used for _____________ purpose Amplification Regulation Tuning None of the above None Hint 95). The power factor of an alternating current circuit is given by ____________ Z/R R/Z XL/R None of the above None Hint 96). 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 None Hint 97). Which one of the following graphs represents a typical germanium diode? Fig A Fig B Fig C Fig D None Hint 98). Which one of the following current-voltage characteristics graphs represents a silicon diode? Fig A Fig B Fig C Fig D None Hint 99). Which one of the following current-voltage characteristics graphs represents a real diode? Fig A Fig B Fig C Fig D None Hint Read more about Diodes 100). The diode in forward bias in an ideal diode model is considered as ____________ Perfect conductor Resistor Capacitor Insulator None Hint Time's up
