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Semiconductor Device Question & Answers

January 24, 2022 By WatElectronics

This article lists 100 Semiconductor Device MCQs for engineering students. All the Semiconductor Device Questions and Answers 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 Semiconductor devices.

A device that relies on the properties of a semiconductor and functions accordingly is called a semiconductor device. Semiconductor devices such as diodes, rectifiers, amplifiers, etc are designed using semiconductor substances that include gallium, silicon, and germanium.

These devices are designed to overcome the drawback attained by vacuum tubes. These devices can be manufactured on 2 platforms is on an integrated chip called IC and as single discrete devices. The conductivity of these devices mainly depends on the level of doping impurities such as p-type or n-type.

These semiconductor devices are classified into 2 types namely majority carrier devices and minority carrier devices. Where majority carrier device includes JFET, Schottky diode and powers MOSFET and BJT, PIN diode, IGBT and thyristor are the examples of minority carrier devices.

These devices benefit in terms of minim required voltage, compact, budget-friendly, small size, and more life span. But lack in terms of noise level, miss handling of high power and high frequency. Multivibrators, Schottky diode, TRIAC, BJT, and more are a few of the applications of semiconductor devices.

1). A semiconductor device is a _____ component?

Hint
2). On which of the following materials properties electronic devices depends on?

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3). ____ is a solid based semiconducting substance?

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4). Which of the following device where replaced by semiconductor device?

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5). Semiconductor device perform conduction in _____ state?

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6). A vacuum tube perform conduction in ____ state?

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7). In how many packages semiconductor devices are manufactured?

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8). Which of the following are the examples of discrete devices?

Hint

Read more about Radio.

9). IC stands for ___?

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10). An IC is also called ___?

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11). An IC comprises of _____ on the chip?

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12). ______ devices are integrated in huge quantity on an IC?

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13). MOSFET stands for _____?

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14). A MOST FET is a ____ device type?

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15). Which of the following is the result form obtained from MOSFET?

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16). ____ properties of IC design lead to rapid adoption of standardized IC?

Hint
17). Which of the following are the electronic device application of IC?

Hint

Read more about Computer.

18). Which of the following are small IC applications?

Hint
19). A microcontroller has ___ number of CPUs?

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20). Program memory in microprocessor comprises of _____?

Hint
21). A semiconductor wafer is also called ____?

Hint
22). Behavior of semiconductor device depends on _____?

Hint

Read more about Intrinsic and Extrinsic Semiconductor Doping.

23). The process of doping is done in _____ type of semiconductor device?

Hint
24). An intrinsic type semiconductors is also called ____?

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25). The process of doping is done for improving ____ properties?

Hint

Semiconductor Device Interview Questions and Answers

26). Conduction in semiconductor device occurs due to ______?

Hint
27). Which of the following are the semiconductor device?

Hint

Read more about LED.

28). A diode is made up of _____junction?

Hint
29). A P-type has majority as ______ carriers?

Hint
30). A N-type has majority as ______ carriers?

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31). In PN diode forward bias condition the p-type is connected to ______ polarity of battery or source?

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32). In PN diode forward bias condition the n-type is connected to ______ polarity of battery or source?

Hint
33). In PN diode forward bias condition the barrier size is ______?

Hint
34). In PN diode reverse bias condition the barrier size is ______?

Hint
35). The conductivity in semiconductor device can be controlled by ______?

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36). A diode is constructed with _____ number of pn junctions?

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37). A diode has ____ number of terminals?

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38). A diode is a ____ element?

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39). Which of the following is the units of resistance?

Hint
40). A photo diode has ____ number of terminals?

Hint
41). A photo diode is exposed to ______ rays?

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42). A photo diode converts _____ energy to current?

Hint
43). A photo diode operates in _____ bias?

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44). A photo diode is of ____ structure?

Hint
45). Identify the semiconductor device symbol displayed below.

Diode

Diode

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46). Identify the semiconductor device symbol displayed below.

Diode

Diode

Hint

Read more about Zener Diode.

47). Identify the semiconductor device symbol displayed below.

Diode

Diode

Hint

Read more about Varactor Diode.

48). In photo diode ____ terminal is provided with positive charge?

Hint
49). In photo diode ____ terminal is provided with negative charge?

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50). Which of the following substance are used for developing photo diode?

Hint

Semiconductor Device Quiz Questions and Answers.

51). A micro controller is a _____device?

Hint
52). Which of the following are the memory elements of microcontroller?

Hint
53). Which of the following are the advanced peripherals interfaced to microcontrollers?

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54). Which of the following are the applications of microcontrollers?

Hint
55). A GPU is designed to alter _______ component of processor?

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56). Which of the following are the applications of GPU?

Hint
57). DIAC stands for ______?

Hint
58). A DIAC is a _____ type of component?

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59). A DIAC has _____ number of pins?

Hint
60). A DIAC has ___ number of layers?

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61). Which of the following is the breakover voltage of DIAC?

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62). Which of the following is not a part of DIAC?

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63). A DIAC is also called ______ diode?

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64). DIACS are ____ directional devices?

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65). Which of the following are the characteristics of SIDAC?

Hint
66). SYDIAC stands for ________?

Hint
67). Which of the following are the applications of DIAC?

Hint
68). Oscillation takes place in ____ systems?

Hint
69). Which of the following are the applications of electrical based oscillation?

Hint

Read more about Oscillator.

70). Which of the following is the power based semiconductor device?

Hint
71). A power based semiconductor device is used in _____ mode?

Hint
72). Which of the following are the applications of linear power based circuits?

Hint
73). A thyristor is a _____ type of semiconductor device?

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74). A thyristor has _____ number if layers?

Hint
75). A thyristor acts as _____ switch?

Hint

Semiconductor Device Important Questions for Interviews

76). A thyristor is a ____ component?

Hint
77). A thyristor has _____ number of pins?

Hint
78). A thyristor operates in ____ number of states?

Hint
79). In which of the following mode of thyristor, voltage is applied in direction of diode blocked?

Hint
80). In which of the following mode of thyristor, voltage is applied in direction of diode conduction?

Hint
81). In which of the following mode thyristor diode is not triggered?

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82). In which of the following mode thyristor diode is triggered?

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83). In which of the following thyristor mode “holding current” is observed?

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84). How many junctions are present in thyristor?

Hint
85). A power based semiconductor devices are classified in to _____ types?

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86). Which of the following is the classification of 2 terminal power based semiconductor device?

Hint
87). Which of the following is the classification of 2 terminal power based semiconductor device?

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88). Which of the following are the examples of majority carrier devices?

Hint
89). Which of the following are the examples of minority carrier devices?

Hint
90). Which of the following are the examples of 2 terminal devices?

Hint
91). Which of the following are the examples of 3 terminal devices?

Hint
92). Which of the following are the examples of microprocessors?

Hint
93). Which of the following are the examples of special purpose processors?

Hint
94). DSP processor is used for _____ purpose?

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95). GPU processor is used for _____ purpose?

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96). A switch has ______ number of contacts?

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97). ____ terms defines switch contact variations?

Hint
98). A logic gate is implemented using ____?

Hint
99). Which of the devices can be represented using logic gate?

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100). Which of the following are the examples of compound logic gates?

Hint
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