Analog Electronics Questions and Answers March 22, 2021 By WatElectronics This article lists 100 Analog Electronics MCQs for engineering students. All the Analog Electronics Questions & Answers given below includes solution and link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on Analog Electronics topic which is core in Electronics Engineering. Conductive materials are classified into 3 types namely insulators, semiconductors, and conductors. An insulator offers low conductivity, some of the examples of an insulator are wood, oil. Whereas a semiconductor offers conductivity between an insulator and conductor. Examples of semiconductors are diodes, switches, transistors. A conductor offers maximum conductivity like copper wire, water. Semiconductors are further classified into 2 types namely, intrinsic type semiconductor and extrinsic type semiconductor. In analog electronics, there are two types of components active components like voltage resources, current resources, etc, and passive components like resistors, capacitors, inductors, etc. The main advantage of analog electronics is that provide accurate output, are more flexible, low cost, and are easily portable. 1). Analog electronics is __________ signal. Continuous variable Discrete Non-continuous Continuous static Hint 2). Analog communication gives a relationship between _________. Signal and voltage Voltage and current Current and voltage Signal and voltage or current Hint 3). Analog is derived from ___________. Greek Turkish German Indian Hint 4). The information in electric signals represented by changing its _________ form. Voltage Current Frequency All the above Hint 5). What is the function of the transducer? Converts one form of signal to another form Creates resistance It provides capacitance Holds signals information Hint Read more about Transducer. 6). Which of the following is an example of a transducer? Microphone Amplifier ADC All the above Hint 7). What is the function of an amplifier? It amplifies the low-frequency signal to high frequency signal It creates vacuum between signals It amplifies the high-frequency signal to low-frequency signal Both a and c Hint Read more about Amplifier. 8). What is the full form of ADC? Analog to digital converter Area and dimension calculator Analogue and digital calculator None of the above Hint 9). What is the full form of DAC? Digital to analog converter Dimension and area calculator Digital and area calculator None of the above Hint 10). Digital Signals are represented in __________ form. 0’s 1’s Both a and b Diagram Hint 11). Analog signal has ___________number of modulation techniques. 2 3 4 5 Hint 12). Analog circuits are classified into how many types? Active Passive Both a and b Digital Hint 13). Which of the following is an active elements in analog electronics? Transistors Resistors Capacitors Inductors Hint Read more about Transistors. 14). Which of the following is a passive element in analog electronics? Resistors Capacitors Inductors All the above Hint 15). Which of the following is a unit of resistor? Ohms Kilo Watts Joules Farad Hint 16). A resistor has _________ number of terminals? 2 3 4 1 Hint 17). Which of the following is the function of a resistor? It opposes the flow of current It passes current It acts as a dielectric component Both a and c Hint 18). What are the units of a capacitor? Ohms Kilo Watts Joules Farad Hint 19). Which of the following is the function of a capacitor? It stores charge It passes current It acts as a dielectric component All the above Hint 20). What is the other name for a resistor? Switch Diode Tuner Both a and b Hint Read more about Diodes. 21). A switch can operate in _________ states. 1 2 3 Both a and b Hint 22). Ohm’s law is given by ____________ equation. V = IP V = IR I = V/p V = I Hint 23). Resistors can be connected in _________ ways. 2 1 3 4 Hint 24). Which of the following statement is true for a transistor? It is a switch It is a semiconductor device It amplifies electric signals All the above Hint 25). How many terminals do a basic transistor have? 2 3 4 5 Hint Analog Electronics Interview Questions & Answers 26). What does CEC in transistor stands for? Common emitter configuration Collector emitter configuration Conjunction emitter configuration Configuration emitter collector Hint 27). What does CBC in transistor stand for? Common base configuration Collector base configuration Conjunction base configuration Configuration base collector Hint 28). What does CCC in transistor stand for? Common collector configuration Collector Card configuration Conjunction collector configuration Configuration conjunction collector Hint 29). How types of configuration are there in a transistor? 3 4 5 6 Hint 30). Which of the following are the advantages of analog electronics? Consumes less bandwidth Cost is low Time-varying All the above Hint 31). Analog signal is represented in ___________ waveform. Sine Square Triangular Pulse Hint 32). Which of the following are examples of analog signals? Temperature sensor FM radio signals Photocells All the above Hint 33). Analog signals _________ by noise. Deteriorate Increases Remain the same None of the above Hint 34). Does analog hardware offer flexible implementation? Yes No Hint 35). Analog signals offer ________ range. Fixed Variable Static Dynamic Hint 36). Which of the following are the advantages of analog signals? Represents data accurately Occupies less area More flexible Both a and c Hint 37). Which of the following are the disadvantages of analog components? Expensive Occupies more space Parallax error All the above Hint 38). What is the maximum efficiency of a CB amplifier? 100% 48% 25% 28% Hint 39). Which component is used in an analog circuit to prevent any short circuit or damage when there is high current or voltage fluctuation in the circuit? Resistor Capacitor Inductor Reactor Hint 40). Which of the following factor is responsible for transistor current leakage? Temperature Transistor rating Emitter size Base doping Hint 41). Op-amp stands for __________. Operational amplifier Operation amplifier Operation Active None of the above Hint 42). Op-amp is a __________ coupled amplifier. AC coupled DC coupled Both a and b ADC coupled Hint 43). Op-Amp was invented by _______ in ________ year. Karl D. Swartzel Jr in 1967 Otis Frank Boykin in 1987 Ohms in 1967 Ewald George in 1960 Hint 44). Resistor was invented by _____ in _____ year. Karl D. Swartzel Jr in 1967 Otis Frank Boykin in 1920 Ohms in 1967 Ewald George in 1960 Hint 45). Capacitor was invented by _____ in _____ year. Karl D. Swartzel Jr in 1967 Otis Frank Boykin in 1920 Ohms in 1967 Ewald George in 1745 Hint Read more about Capacitor. 46). Which of the following is the application of a capacitor? Memory storage Power storage Power factor corrector All the above Hint 47). Which of the following are classifications of capacitors? Electrolytic capacitor Paper capacitor Ceramic capacitor All the above Hint 48). Which of the following are different types of resistors? Thermistor Varistor Variable resistor All the above Hint 49). Which of the following statement is true regarding the oscillator? It is an electronic circuit It generates periodic signals It generates sinewave or square wave All the above Hint 50). Which of the following are the applications of an oscillator? Quartz crystal Used in TV Used in metal detectors All the above Hint Analog Electronics Exam Questions & Answers 51). The diode is a _______. Two-terminal semiconductor device Three-terminal semiconductor device Four-terminal semiconductor device None of the above Hint 52). What are diode terminals? Anode, cathode Collector, emitter Collector, emitter, base None of the above Hint 53). In terms of conductivity the materials are classified into ______. Conductor, semiconductor Insulator Collector, emitter, base Conductor, semiconductor, Insulator Hint 54). In a semiconductor the flow of current is due to ________. Electrons Holes Both a and b None of the above Hint 55). Which is the example for trivalent atoms? Aluminum Boron Gallium All of the above Hint 56). Which is the example for pentavalent atoms? Aluminium, Boron Arsenic, Antimony Phosphorus Both b and c Hint 57). In the case of P-type semiconductor the ________ are the majority carriers. Holes Electrons Both a and b None of the above Hint Read more about P-Type Semiconductor. 58). The phase lock loop is used in __________. Synchronization and demodulation circuits Clock recovery Frequency synthesizers All of the above Hint 59). In phase lock loop ______ is used as phase detector. Balanced mixture XOR gate Phase frequency detector All of the above Hint 60). In the conventional oscillator the frequency of oscillation can be selected by _________. Resistor, capacitor Capacitor, inductor Resistor, capacitor, inductor None of the above Hint 61). Which oscillator comes under harmonic oscillator? Crystal oscillator RC and LC oscillator Both a and b None of the above Hint 62). In RC oscillator the frequency is directly proportional to ______. 1/√RC 1/RC RC None of the above Hint Read more about RC Oscillator. 63). The process of converting the AC voltage signal into the DC voltage signal is called _____. Controller Rectifier Rectification Peak detector Hint 64). In a conductor the flow of current is due to ________. Electrons Holes Both a and b None of the above Hint 65). In the case of N-type semiconductor the ________ are the majority carriers. Holes, electrons Only electrons Only holes None of the above Hint Read more about N-Type Semiconductor. 66). In LC oscillator the frequency is directly proportional to _____. 1/√LC 1/LC LC None of the above Hint 67). Whenever the sin wave is applied as input to the half wave rectifier then the rectifier allows ________. Only positive half cycle Only negative half cycle Both a and b None of the above Hint 68). The efficiency in half wave rectifier is around _______. 40.6% 45.6% 49.6% None of the above Hint Read more about Half Wave Rectifier. 69). The average value or DC value of the half wave rectifier is expressed as______. Average value=vm/π Average value=vmπ Average value=1/π None of the above Hint 70). Which material is the example of an insulator? Mica Wood Copper Both a and b Hint 71). The average value or DC value of the full wave rectifier is expressed as______. Average value=vm/π Average value=2vm/π Average value=1/π None of the above Hint 72). The peak to peak ripple voltage in full wave rectifier is given by ______. V r(p-p) =2vm/2fRLC V r(p-p) =vm/2fRLC V r(p-p) =4vm/2fRLC None of the above Hint 73). The peak to peak ripple voltage of full wave rectifier in terms of DC is given by ______. V r(p-p) = I dc/2fR L C V r(p-p) =I dc/fC V r(p-p) =I dc/2fC None of the above Hint 74). The efficiency in full wave rectifier is around _______. 40.6% 80.6% 81.2% 84.5% Hint Read more about Full Wave Rectifier. 75). ________ is a material that offers very low conductivity when voltage is applied. Insulator Semiconductor Resistor Capacitor Hint Analog Electronics MCQs with Answers 76). The change in the output frequency with the change in the supply voltage is known as _____. Capture range Load pulling Supply pushing None of the above Hint 77). The change in the output frequency with the change in the load minimum deviation from the nominal frequency is known as _____. Capture range Load pulling Supply pushing None of the above Hint 78). The unit of the conductivity is ______. Siemens/meter Siemens/m2 Hz/V None of the above Hint 79). Which material is the example of the conductor? Mica Wood Copper All of the above Hint 80). ________ is a material that has conductivity more than insulators but less than conductors. Conductor Semiconductor Resistor Capacitor Hint 81). Semiconductors are classified into _____ types. 1 2 3 4 Hint 82). Extrinsic type semiconductors are classified into _____ types. 1 3 2 4 Hint 83). Which of the following are examples of intrinsic semiconductor? Si Ge Cu Both and b Hint 84). How many atoms of impurities are added to extrinsic type semiconductor? 1 part in 10 power6 atoms 1 part in 100 power6 atoms 2 part in 10 power6 atoms 10 part in 10 power6 atoms Hint 85). The impurity added in N-type semiconductor is ______. Pentavalent Trivalent Tetravalent Octavalent Hint 86). The impurity added in P-type semiconductor is _________. Pentavalent Trivalent Tetravalent Octavalent Hint 87). The positive and negative terminals of a diode is connected to _____ terminals of the power source in reverse bias diode. Negative, positive Positive, negative Positive, positive Negative, negative Hint 88). The positive and negative terminals of a diode is connected to _______ terminals of power a source in forward bias diode. Negative, positive Positive, negative Positive, positive Negative, negative Hint 89). Which bias has a maximum charge barrier? Forward bias Reverse bias Both a and b All the above Hint 90). Which bias has a minimum charge barrier? Forward bias Reverse bias Both a and b All the above Hint 91). Charge carrier is represented by _________. C Q R I Hint 92). Which of the following are the units of charge? Ohms Coulomb Volts Amperes Hint 93). Voltmeter is used to measure ______ in an electric circuit. Voltage Current Capacitance Resistance Hint 94). Ammeter is used to measure ______ in an electric circuit. Voltage Current Capacitance Resistance Hint 95). Multimeter is used to measure ______ in an electric circuit. Voltage Current Capacitance Resistance Hint 96). Which of the following is the unit of conductance? Ohms Siemen Volts Amperes Hint 97). Which of the following is the unit of Inductance? Ohms Siemen Volts Henry Hint 98). Which of the following is the unit of Impedance? Ohms Siemen Volts Henry Hint 99). Which of the following is the unit of Frequency? Ohms Siemen Volts Hertz Hint 100). Which of the following is the unit of Power? Ohms Watts Volts Hertz Hint Time is Up! Time's up
