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Tunnel Diode Question & Answers

February 9, 2022 By WatElectronics

This article lists 100 Tunnel Diode MCQs for engineering students. All the Tunnel Diode 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 Tunnel Diode.

A Tunnel diode is a type of PN diode designed by Tokyo scientist Leo Esaki in 1958. During this discovery of diode, Leo has observed the heavily doping condition to diode has generated negative based resistance.

This generation of negative-based resistance has further reduced the current flow across the diode. This diode works on the principle of Tunneling also called the Quantum mechanical effect and its characteristics are plotted using VI characteristics in forward and reverse bias conditions.

VI characteristics operate in 3 regions tunneling current, negative resistance, and valley point. A heavy doping-based condition is observed in forward bias condition of the tunnel diode. In reverse bias conditions, the diode acts as a fast rectifier.

These diodes benefit in terms of switching property, minimum noise, less power dissipation, and generation of negative resistance. But limits in terms of cost, zero isolation between input and output, low output swing, and low power devices. The applications include oscillators, amplifiers, storage devices, etc.

1). A tunnel diode is also called ____?

Hint
2). A tunnel diode is a ____ diode?

Hint

Read more about Semiconductor.

3). A tunnel diode is similar to ____ diodes operation?

Hint
4). A tunnel diode has _____ polarity resistance?

Hint
5). Due to _____ property tunnel diode experience tunneling?

Hint
6). Quantum mechanic is related to _____ subject?

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7). Quantum physics includes _____?

Hint
8). A semiconductor diode has ___ number of substances?

Hint
9). In negative resistance concept, increase in voltage of a device leads to _____ in current quantity?

Hint
10). Tunneling is a _____ phenomenon?

Hint
11). Tunnel diode was invented by ____ scientist?

Hint
12). Tunnel diode is a ___ device?

Hint
13). Tunnel diode works on ___ principle?

Hint
14). Which of the following was the first production of tunneling diode?

Hint
15). How many pins do a tunnel diode comprises of?

Hint
16). Identify the following diode type in the figure below?

Diode

Diode

Hint
17). A cathode is a ___ polarity?

Hint
18). A anode is a ___ polarity?

Hint
19). A tunnel diode has ____ doped PN junction?

Hint
20). A PN junction is also called_____ junction?

Hint
21). A P-type semiconductor has ____ as majority carriers?

Hint
22). A N-type semiconductor has ____ as majority carriers?

Hint
23). A heavy doping in tunnel diode has ____ band?

Hint

Read more about Band.

24). N-side in tunnel diode has ___ band?

Hint
25). P-side in tunnel diode has ___ band?

Hint

Tunnel Diode Interview Questions and Answers

26). A band gap is a _____?

Hint
27). Which of the following is the mid gap in an electron conduction?

Hint
28). Which of the following substance are used in a semiconductor device?

Hint
29). Which of the following are the applications of tunnel diode?

Hint

Read more about Switching Circuits.

30). The power output from a tunnel diode is ____?

Hint
31). Which of the following device application of tunnel diode has step tunneling?

Hint
32). Which of the following application of tunnel diode has highest frequency of an solid based oscillator?

Hint
33). In forward bias of a tunnel diode the width of band is ____?

Hint
34). In reverse bias of a tunnel diode the width of band is ____?

Hint
35). At negative differential resistance the value of current _____?

Hint
36). When ____ parameter increases beyond fixed transition point the tunnel diode conducts.

Hint
37). A tunnel diode in reverse bias is called ____?

Hint
38). In tunnel diode reverse bias condition the diode acts as fast _____?

Hint
39). Which of the following are the properties of Tunnel diode in reverse bias?

Hint
40). Which of the following substance is mostly used in tunnel diode?

Hint
41). A high impurity based PN junction devices is called ____ diode?

Hint
42). Which of the following is the formula for tunnel diode phenomenon?

Hint
43). A tunnel diode has ___ body?

Hint
44). Which of the following are the components of tunnel diode?

Hint
45). The tin-dot in tunnel diode is connected to ____ terminal?

Hint
46). The pellet component of tunnel diode is connected to ____?

Hint
47). How many bias modes are observed in a tunnel diode?

Hint
48). The characteristic operation of tunnel diode is _____ than tunnel diode?

Hint
49). At ____ bias condition tunnel diode acts as fast rectifier?

Hint

Read more about Rectifier.

50). Which of the following state in tunnel diode empty states are present on ____ side aligned with filled states?

Hint

Tunnel Diode MCQs for Exams

51). Which of the following is the filled state in tunnel diode?

Hint
52). Which of the following is the un-filled state in tunnel diode?

Hint
53). In tunnel diode electrons tunnel through ____?

Hint
54). A tunnel diode with high concentration is a good _____?

Hint

Read more about Conductor.

55). A tunnel diode is represented using ____ characteristics?

Hint
56). Which of the following parameter is plotted on X-axis of tunnel diode characteristics?

Hint
57). Which of the following parameter is plotted on Y-axis of tunnel diode characteristics?

Hint
58). The forward resistance in tunnel diode is _____ value?

Hint
59). When voltage increases beyond peak based voltage the value of current _____?

Hint
60). How many points are observed in an tunnel diode?

Hint
61). Which of the following is the equation of current component in tunnel diode?

Hint
62). Due to which of the following reason current in tunnel diode raises?

Hint
63). Which of the following is the value of output voltage of tunnel diode?

Hint
64). ____ are the maximum values of tunnel diode?

Hint
65). Which of the following voltage is maximum in tunnel diode?

Hint
66). _____ properties in tunnel diode is considered negligible?

Hint
67). Which of the following is the minimum and maximum current equation of a diode?

Hint
68). Which of the following is the equation of a tunnel diode with negative resistance of a small signal based value?

Hint
69). Which of the following is the order of switching time of a tunnel diode?

Hint
70). Due to triple valued feature tunnel diode act as _____ device?

Hint
71). Which of the following conditions of a tunnel diode makes it work as a microwave oscillator?

Hint
72). Which of the following is the frequency of microwave oscillator?

Hint
73). A tunnel diode with negative resistance acts as _____?

Hint

Read more about Oscillators.

74). Which of the following is the advantage of tunnel diode?

Hint
75). Which of the following are the disadvantages of tunnel diode?

Hint

Tunnel Diode Quiz Questions and Answers.

76). What is the width of PN junction in tunnel diode?

Hint
77). In ____ material tunneling is a incident based conduction?

Hint
78). In tunneling diode electrons flow in ___ region?

Hint
79). The doping capacity of a tunnel diode is ___?

Hint
80). In which character a tunnel diode differs from pn diode?

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81). On ___ voltage application to tunnel diode band conversion takes place?

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82). On application of minimum voltage to tunnel diode ____ quantity of electrons flow across depletion region?

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83). At ___ voltage condition in tunnel diode charge carriers are generated?

Hint
84). When there is increase in voltage level the bands in tunnel diode____?

Hint
85). Increase in conductor based voltage then tunnel current becomes _____?

Hint
86). The bands ____ with increase in conductor voltage?

Hint
87). Which of the following are the equivalent circuit components of a tunnel diode?

Hint
88). Which of the following is the resistance value of a resistor used in tunnel diode?

Hint
89). Which of the following is the inductor value of a resistor used in tunnel diode?

Hint

Read more about Inductor.

90). Which of the following is the capacitance value of a resistor used in tunnel diode?

Hint
91). ____ is defined as the current flow via diode due to punching of electron across PN junction?

Hint
92). A heavy doping condition occurs due to ___ condition?

Hint
93). Which of the following are the components of a tunnel diode oscillator?

Hint
94). Resistance, Inductance and capacitance in an tunnel diode oscillator are connected in ____ configuration?

Hint
95). At ___ condition the tunnel diode oscillator amplitude is blocked?

Hint
96). Which of the following is the formula for oscillation frequency of tunnel diode oscillator?

Hint
97). Which of the following is the frequency value of a tunnel diode oscillator?

Hint
98). Which of the following are the applications of tunnel diode oscillator?

Hint
99). The switching capacity of a tunnel diode is ____?

Hint
100). Due to low current based property a tunnel diode is used as ___?

Hint

Read more about FM.

For More MCQs

  • Zener Diode Questions and Answers
  • Schottky Diode Questions and Answers
  • Semiconductor Diode Questions and Answers

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