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Transistors Question & Answers

September 2, 2021 By Wat Electrical Leave a Comment

This article lists 100+ Transistors MCQs for engineering students. All the Transistors Questions & Answers given below includes solution and link wherever possible to the relevant topic.

The transistors are small electronic devices that can be used as switches where we could use a small amount of current to drive a larger current. There are two main types of transistors they are bipolar and field-effect transistors. The NPN and PNP are bipolar transistors with two junctions, where JFET and MOSFET are field-effect transistors.

 

1). The ratio of collector current by the base current is known as _______________ gain

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2). Which one of the following is a bipolar transistor?

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3). How many junctions do NPN and PNP transistors have?

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4). The emitter and collector of an NPN transistor are made up of _______________ semiconductor

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5). The base of NPN transistors are made up of ______________ semiconductor

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6). Which one of the following is heavily doped in BJT?

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7). Which one of the following collects the electrons?

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8). In how many regions does BJT can operate?

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9). In an active region of operation the ______________ junction is forward biased


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10). When the BJT is used for the amplification of the signal then it can be operated in _____________ region

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11). The base of PNP transistors made up of _______________ semiconductor

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12). The emitter and collector of a PNP transistor are made up of _______________ semiconductor

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13). In a BJT common emitter configuration ____________ terminal is common between input and output

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14). In bipolar junction transistor the cut off frequency is ____________

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15). The switch implementation is poor in ________________ transistor

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16). What is the standard form of BJT?

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17).The bipolar junction transistor is categorized into ____________ types

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18). The input resistance of common base is ____________

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19). The cut off frequency of MOSFET is ______________

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20). Which one of the following is lightly doped in BJT?

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21). What is the standard form of UJT?

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22). In an active region of operation the ______________ junction is reverse biased

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23). In a BJT common collector configuration ____________ terminal is common between input and output

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24). The output resistance of the common base is ______________

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25). Which one of the following is a unipolar device?

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Transistors MCQ's With Hints

26). Which one of the following is a voltage-driven device?

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27). In ___________ transistor the gain is characterized by trans-conductance

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28).The turn off time in IGBT is_____________

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29). The switching frequency of power MOSFET is _____________

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30). The conduction drop in power MOSFET is ____________

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31). The voltage and current rating of power MOSFET is _____________

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32). The blocking capacity is asymmetrical in _____________

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33). In which one of the following transistors does the secondary break down occur?

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34). The saturation voltage is low in ____________

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35). The switching speed is fast in ______________ transistor

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36). The operating frequency is medium in _____________ transistor

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37). What is the standard form of MOSFET?

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38). How many junctions does UJT have?

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39). What is the important parameter in BJT?

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40). Which one of the following is moderately doped in BJT?

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41). In a BJT common base configuration ____________ terminal is common between input and output

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42). The output resistance of common emitter is ______________

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43). The input resistance of common emitter is ____________

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44). The turn-on time in BJT is_____________

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45). The unipolar junction transistor operated by ____________ carriers

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46). ________________ are the terminals of MOSFET

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47). What is the standard form of IGBT?

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48). The junction field-effect transistors are ____________

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49). Which one of the following transistors is mainly used in low noise applications?

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50). The control method in FET is ___________

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Transistors Important MCQs for Interviews

51). In the saturation region _____________ is forward biased

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52). In cut off region _____________ is reverse biased

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53). In an active region _____________ is forward biased

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54). The bipolar junction transistor is a __________ device

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55). What is the standard form of IGFET?

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56). The field-effect transistor used as ___________

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57). The operation of the FET relies on ____________

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58). The current in the field-effect transistor is controlled by applying voltage between _______________ terminal

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59). The input resistance of common collector is ____________

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60). The output resistance of the common collector is ______________

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61). The conduction drop in BJT is ____________

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62). The parallel operations are possible in _____________

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63). In the field-effect transistor the current is used to flow between _______________ terminals

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64). How many terminals does FET have?

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65). The gain-bandwidth product is low in _______________

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66). The voltage and current rating of BJT is _____________

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67). The input-output relation is non-linear in _______________

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68). The turn-on time in IGBT is_____________

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69). The voltage gain of the common collector is ____________

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70). What are the advantages of transistors?

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71). The current carriers in a PNP transistor is ____________

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72). What is the standard form of FET?

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73). In which one of the following the thermal stability is less?

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74). Which one of the following is a current-controlled device?

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75). The input impedance high in ____________

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Transistors MCQs for Quiz

76). The input resistance is high in ____________ transistor

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77). The unipolar junction transistor is a ________________ layer device

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78). What is the important parameter in UJT?

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79). The unipolar junction transistor is a _______________ device

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80). The voltage gain of the common emitter is ____________

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81). How many junctions do transistors have?

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82). In MOSFET the channel exists permanently in ____________ mode

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83). In which one of the following transistors the gate is formed as a diode?

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84). The drain resistance is high in ___________

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85). Which one of the following is difficult to fabricate?

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86). The MOSFET operates in ______________ mode

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Read more about MOSFET
87). The JFET operates in ______________ mode

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88). The trans-conductance is very high in __________ channel

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89). The current carriers are ___________ in P-channel JFET

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90). The current carriers are ___________ in N-channel JFET

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91). The field-effect transistors are categorized into _____________ types

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92). In which one of the following transistors the terminals are not interchangeable?

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93). The control method in BJT is ___________

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94). The voltage gain of the common base is ____________

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95). In which one of the following transistors the gate is formed as a capacitor?

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Read more about Capacitors
96). The leakage current in the common base is ____________

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97). The leakage current in the common-emitter is ____________

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98). The turn off time in bipolar junction transistor is_____________

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99). In _____________ transistor the gain is characterized by voltage gain

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100). The current flow is unipolar in _____________ transistor

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