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Electronic Devices and Circuits Question & Answers

January 17, 2022 By WatElectronics

This article lists 100 Electronic Devices and Circuits MCQs for engineering students. All the Electronic Device and Circuit Questions and Answers are given below include a hint and a 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 Electronic Devices and Circuits.

Electronic devices deal with electronic components deployed for controlling the direction of electronic related parameters like voltage, current within the designed circuits. Electronics is a branch that involves subjects such as physics and electrical. These devices are constructed using a combination of active and passive type electronic components such as resistors, capacitors, inductors, transistors, ammeters, and more.

An active type of electronic device is a component that requires an external power source for its interfaced load operation, these devices include transistors, diode, LED, etc. Whereas a passive type of electronic device is components that do not need any external power source to operate such as cables, optical fibers, etc.

There are various branches of electronics such as IC, digital electronics, nanoelectronics, etc. Where each of these branches deals with different subjective. There is a number of electronic devices developed depending on the application-specific such as amplifiers, oscillators, rectifiers, AC to DC converter, DC to AC converter, etc.

They benefit in terms of noise margin, rectify the SNR ratio, are more reliable, etc. But lack in terms of power consumption and require high power. They are used in multiple zones such as domestic as lights, fans; commercial as robots to perform a repeated task, electronic gadgets for rectifying, etc.

1). The field of electronics is a branch of _____ engineering?
Hint2 subjects.
2). Electronic circuit exhibits ____ properties of electronic devices?
Hint3 properties.
3). How many types of devices electronic circuits are classified into?
HintMinimum number.
4). Which of the following is the properties of active type electronic device?
Hint3 properties.
5). Electrons are ______ polarity?
HintInverting terminal means?
6). A device that enhances the signal power is ____?
HintUsed in music equipment.
Read more about Diffrential Amplifier
7). An amplifier is also called _____?
Hint2 names.
8). An amplifier has _____ number of ports?
Hintminimum number.
9). To which of the following ports of amplifier supply is provided?
HintAt source end of amplifier.
10). At which of the following port resultant signal is obtained from amplifier?
HintLoaded terminal.
11). Which of the following term defines the amplified signal output obtained from amplifier?
HintMeasured in logarithmic decibel (dB) units .
12). Which of the following is the formula for voltage gain?
HintDivision term.
13). The value of power gain in an amplifier is _____?
HintHigher value.
14). A device that transduces AC to DC is called ____?
Hint"straightens" the direction of current.
Read more about Rectifier.
15). Which of the following electronic component performs reverse operation of rectifier?
HintA device that converts direct current (DC) to alternating current (AC).
16). Which of the following are the examples of rectifiers?
Hint3 types.
17). Which of the following is the major application of a rectifier device?
Hint3 rules.
18). Based on which of the following factors of rectifier output voltage fluctuates?
HintSource and design.
19). The resultant wave from rectifier can be smoothened using _____ electronic components?
Hint3 devices.
20). Which of the following types of phases a rectifier circuit can be designed?
HintMany.
21). A domestic application rectifier are of _____ phase?
HintUni phase.
22). The industrial application rectifier are of _____ phase?
HintMany
23). Which of the following is applied to half wave single phase rectifier circuit?
Hint2of the cycles of wave.
24). How many diodes are required in a single phase half wave rectifier?
HintUni.
25). How many diodes are required in a 3 phase full wave rectifier?
HintOdd number of diodes.

Electronic Device and Circuit Interview Questions and Answers

26). A rectifier has ___ directional flow of charge?
HintSingle.
27). Which of the following type of rectifier has maximum ripple count?
HintEither only positive or negative.
28). Which of the following type of rectifier requires maximum filters?
HintUni phase.
29). Which of the following is the Vrms value of ideal half wave rectifier?
HintAverage of terms,
30). Which of the following is the Vdc value of ideal half wave rectifier?
HintDivision.
31). A full wave rectifier rectifies ______ to constant polarity?
Hint2 polarities.
32). Which of the following is the output obtained from full wave rectifier?
HintDirect current.
33). Which of the following are the components of a full wave rectifier?
Hint3 components.
34). Which of the following are the passive effects observed in electronic devices?
Hint3 effects.
35). A vacuum tube has the capacity to _____?
Hint3 capacities.
36). Which of the following was the first transistor invented?
HintAlso called Insulated Gate Field Effect Transistor.
37). Which of the following are the major application of electronic devices?
HintElectronic appliances.
Read more about Computers.
38). Electronic branches are of ____ types?
HintMaximum value.
39). A study that deals with digital signals is called _____ type of electronics?
HintExpressed in 0's and 1's.
40). A study that deals with continuous type variable signal is called _____ type of electronics?
HintAny continuous signal for which the time-varying feature of the signal represents some other time-varying quantity.
41). A study that deals with sub fields based electronics is called _____ type of electronics?
HintHolds unique wiring techniques such as wire bonding.
42). A study and the application of various electronic based systems and applications is called?
HintExample gamma rays, X-rays, ultraviolet and infrared,.
43). A study of electronics application in order to control and convert the electric power is _____ type of electronics?
HintMeasures in megawatt.
44). Which of the following are the semiconducting devices used in semiconducting appliances?
Hint3 substances.
45). A semiconducting device are constructed as ___?
Hint2 terms.
46). A semiconducting substance are of ______ types?
HintMinimum number.
47). Which of the following is the positive charge semiconducting type?
HintHoles as majority carriers.
48). Which of the following is the negative charge semiconducting type?
HintElectrons as majority carriers.
Read more about Semiconductor.
49). A p-type semiconductor has ____ as majority charge carriers?
HintPositive carriers.
50). A n-type semiconductor has ____ as majority charge carriers?
HintNegative terms.

Electronic Device and Circuit Important Questions for Interviews

51). Abbreviate MOSFET?
HintUsed to switch or amplify voltages in circuits.
52). A MOSFET has ___number of terminals?
Hint2*2=
53). Which of the following components of MOSFET are isolated from one another?
HintMiddle terminals in MOSFET.
Read more about MOSFET.
54). Which of the following substance separates body and gate terminal in MOSFET?
HintA layer that oppose current.
55). MOSFET works on _____ principle?
HintP-type and N-type.
56). Which of the following is the advantage of MOSFET?
HintDepends on input.
57). Which of the following are the advantages of MOSFET?
Hint3 advantages.
58). In which of the following areas MOSFET is implemented?
Hint3 areas.
59). MOSFET are classified in to _____ types?
HintMinimum number.
60). A CMOS logic uses ____ MOSFET?
Hint2 Channels.
61). Which of the following type of insulator substance is used in MOSFET?
HintContains oxide element.
62). FGMOS stands for _______?
HintFGMOS stands for Floating Gate MOSFET.
63). Which of the following are the advantages of digital circuits?
Hint3 advantages.
64). A digital gates performs _____ operation?
HintInvolves in 0's and 1's operation.
65). Which of the following are the basic components of IC?
HintPassive components,
66). Which of the following are the techniques used in digital electronics?
Hint3 methods.
67). Digital operations are performed on _____?
HintProcessor based.
68). A synchronous sequential state in digital circuit is represented using _______?
Hint2 types.
Read more about Flip-Flops.
69). Which of the following are the examples of asynchronous based digital circuits?
Hint3 components.
70). Which of the following are the design issues in digital electronics?
Hint3 types.
71). Which of the following are the components of micro electronics?
Hint3 components.
72). An electronic circuit system is fabricated in _____ steps?
Hintmany.
73). Which of the following electronic circuit system design stage helps in verifying the accuracy of design?
Hintlast step.
74). Which of the following is the first step in electronic circuit system design?
HintBasic step with raw data.
75). Which of the following is the second step in electronic circuit system design?
HintObtain result.

Electronic Device and Circuit Quiz Questions and Answers.

76). Which of the following is the third step in electronic circuit system design?
HintDiagrammatic form.
77). Which of the following is the fourth step in electronic circuit system design?
HintActual result.
78). Which of the following is the first high power based electronic device developed?
HintVolatile substance.
79). Which of the following are modern system for power conversions?
Hint3 types.
Read more about IGBT.
80). A power conversion systems are classified in to _____ types?
HintEven number.
81). An AC to AC is a _____ device?
Hint"straightens" the direction of current.
82). An DC to DC is a _____ device?
HintPerforms opposite to input.
83). Which of the following are the components of embedded systems?
Hint3 components.
84). Which of the following are the memory components of embedded systems?
Hint2 components.
85). Which of the following are the I/O devices of an embedded system?
Hint3 components.
86). Which of the following is the modern type embedded system?
Hint3 components.
87). DSP stands for ___________?
HintDSP stands for Digital Signal Processor.
88). A DSP is a ___ type of embedded system?
HintExample Intel 8085.
89). Which of the following are the major application of DSP processor?
Hint3 components.
90). Which of the following is the goal of DSP?
Hint3 goals.
91). In DSP processor matrix operations performs______?
Hint3 operations.
92). Fundamental DSP algorithm depends on_____?
Hint2 filters.
93). Which of the following are the instructions used in DSP?
Hint2 types.
94). SIMD stands for _________?
HintSIMD stands for Single Instruction and Multiple Data.
95). VLIW stands for _______?
HintVLIW stands for Very Long Instruction Word.
96). VLIP is designed to exploit _____?
HintDepends on instruction.
97). A 8051 microcontroller has ___ number of pins?
Hint4*10=
98). Which of the following pin in 8051 microcontroller is an interrupt pin?
Hint4*3=
99). Which of the following is the ground pin in 8051 microcontroller is an interrupt pin?
Hint2*10=
100). Which following is the Vcc pin in 8051 microcontroller is an interrupt pin?
Hint4*10=
clock.png

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