Schottky Diode Question & Answers January 17, 2022 By WatElectronics This article lists 100 Schottky Diode MCQs for engineering students. All the Schottky Diode Questions & 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 Schottky Diode. A diode is an electronic component designed with 2 terminals anode and cathode. Where anode is the positive terminal and cathode is the negative terminal. The anode terminal is represented with positive polarity and the cathode terminal is represented with negative polarity. Depending upon the polarity connection of this anode to the device it defines whether the diode is forward biased or reverse biased. These diodes are classified into different types based on their operations namely Zenor diode, Schottky diode, PN diode, and more. A Schottky diode discovered by Walter H Schottky is a semiconductor class of diode also named as hot carrier diode. This diode is designed with 2 terminals anode (metal) and cathode (semiconductor) where a metal-semiconductor separates metal and semiconductor within the diode a creates a barrier between them. It has a forward voltage of 150 to 450mV and acts similar to a normal PN junction diode. This diode varies from pn diode in terms of reverse recovery time. Where a pn junction diode has several microseconds to less than 100 ns. Whereas a Schottky diode switched faster. This diode overcomes the limitation of charge storage issue observed in the PN diode. A potential barrier is created between semiconductors and metal. They benefit in terms of low turn-on voltage, fast recovery time, and low junction capacitance. But lack in terms of cost, higher reverse-biased current, and high heat dissipation. They are deployed in wireless rectifiers, metal rectifiers, and metal detectors. 1). A Schottky diode is also called _______? Schottky Barrier diode Hot carrier diode Semi conductor diode All the above None Hint 2). Which of the following scientist discovered Schottky diode? Walter H Schottky James Schottky Richard Daniel Schottky None Hint 3). Which of the following is the valid point of Schottky diode? Has high voltage drop Has low voltage drop Slow switching All the above None Hint Read more about Voltage 4). A diode has ____ number of terminals? 1 2 3 4 None Hint 5). Which of the following is the primitive application of Schottky diode? Wireless rectifiers Metal rectifiers Metal detectors All the above None Hint Read more about Rectifires. 6). Which of the following are the examples of Schottky barrier type diode? Small signal based RF device High Power Schottky rectifying diode Low Power Schottky rectifying diode Both a and b None Hint 7). A Schottky diode consist of ___ pins? 1 2 3 4 None Hint 8). Identify the type of diode shown in the image below? Diode PN diode Zener Diode Schottky diode SCR diode None Hint 9). Identify the Anode terminal of the diode from the following diagram? Diode 1 2 3 Both a and b None Hint 10). Identify the Cathode terminal of the diode from the following diagram? Diode 1 2 3 Both a and b None Hint 11). Which of the following is the forward voltage value of a pn junction diode? 600 to 700mV 500 to 600 mV 400V to 300mV 200 V to 100 mV None Hint 12). Which of the following is the forward voltage value of a Schottky junction diode? 600 to 700mV 150 to 450 mV 400V to 300 mV 200 V to 100 mV None Hint 13). A Schotkky diode with minimum forward type voltage provides _____ factors? High switching speed High system efficiency Low power consumption Both a and b None Hint 14). Which of the following was the first Schottky diode design with cut open packaging? IN5822 IN 5522 IN2255 IN2258 None Hint 15). Which of the following combination junction forms a schottky diode? Semiconductor and Semiconductor Metal and Semiconductor Conductor and Semiconductor Both b and c None Hint 16). Which of the following type of metal substance are used in Schottky diode fabrication? Molybdenum Platinum Chromium All the above None Hint 17). Which of the following is the semiconductor material used in Schottky diode? P-type N-type PN All the above None Hint 18). Which of the following type acts as anode in Schottky diode? Metal N-type P-type All the above None Hint 19). Which of the following type acts as cathode in Schottky diode? Metal N-type P-type All the above None Hint 20). A conventional current in Schottky diode flows from_________. Anode to Cathode Cathode to Anode Cathode to Cathode None Hint 21). Which of the following creates Schottky diode barrier? P-type N-type PN-type All the above None Hint 22). Which of the following diode substance type has less forward voltage? Ptype Ntype PN type All the above None Hint 23). Which of the following type of substances with stands temperature value of diode? Silicides Titanium Silicides Germanium Silicides All the above None Hint 24). What happens to depletion region during forward biasing of diode? Thin Widens Thickens Both b and c None Hint 25). At low doping levels the schottky diode behaves as ______? Rectifier Ohmic device Non ohmic device All the above None Hint Schottky Diode Interview Questions and Answers 26). At high doping levels the schottky diode behaves as ______? Rectifier Ohmic device Ohmic device All the above None Hint 27). Which of the following terms defines the switching state from conducting to non conducting state of a diode? Reverse recovery time Raise time Fall time All the above None Hint 28). Which of the following is the reverse recovery time value of pn diode? <100ns >100ns 100 ns 1000ns None Hint 29). Which of the following is the switching time value of schottky diode? 100ps 200ps 300ps 400ps None Hint 30). A schottky diode has ____ carriers? Majority Minority Both a and b No carriers None Hint 31). Which of the following is the voltage value of silicon diode? 0.7V 0.3V 0.4V 0.5V None Hint 32). Which of the following is the voltage value of germanium diode? 0.7V 0.3V 0.4V 0.5V None Hint 33). Which of the following is the voltage drop range of schottky diode? 0.15 V to 0.46V 0.15 V to 0.3V 0.15 V to 0.5V 0.15 V to 0.6V None Hint 34). Which of the following is the major application of schottky diode with its drop down voltage? Voltage type clamping applications Transistor saturation blockage Zero biasing Both a and b None Hint 35). A Schottky diode has ______ current density? Higher Lower Zero Infinity None Hint 36). How much quantity of heat is dissipated during forward voltage drop? High Low Infinity Zero None Hint 37). Which of the following are the application of Schottky diode? Voltage clamping Switch mode power supply Sample and hold circuits All the above None Hint 38). A schottky diode is a ___ component? Electronic Electrical Mechanical All the above None Hint 39). Which of the following are appliance application of schottky diode? Mixer Radio frequency Rectifiers All the above None Hint 40). A schottky diode has _____ type of junction? Uni Bi Tri Multi None Hint 41). Uni type direction mean_____? Single Double Multi Zero None Hint 42). A c is a function of ____dropping? Voltage Current Temperature Humidity None Hint 43). Operation of schottky diode is represented using ______? VI VR RI VIR None Hint Read more about VI Characteristics. 44). Which of the following parameter is represented on X-axis in VI characteristics of schottky diode? Voltage Current Resistance Both a and b None Hint 45). Which of the following parameter is represented on Y-axis in VI characteristics of schottky diode? Voltage Current Ohms Both a and b None Hint 46). Current is measured in terms of _____ units? Amperes Volts Ohms Joules None Hint 47). Voltage is measured in terms of _____ units? Amperes Volts Resistance Joules None Hint 48). Resistance is measured in terms of _____ units? Amperes Volts Ohms Joules None Hint 49). Which of the following substance leads to schottky diode breakdown? Silicon Aluminum Iron Graphite None Hint 50). Which of the following concentration increases with increase in forward voltage of schottky diode with maximum trivalent impurities? P-type N-type Both a and b None of the above None Hint Schottky Diode Important Questions for Interviews 51). Identify the formula of current in schottky diode? IT= I Diffusion - I Tunneling + I Thermionic emission IT= I Diffusion+ I Tunneling - I Thermionic emission IT= I Diffusion- I Tunneling - I Thermionic emission IT= I Diffusion+ I Tunneling / I Thermionic emission None Hint 52). Which of the following is the diffusion current density of schottky diode? Jn = Dn * q* dn/dx Jn = Dn * q* dn * dx Jn = Dn * q* dn + dx None Hint 53). Which of the following is the value of electronic charge? 1.6*10^19 1.6*10^9 1.6*10^8 1.6*10^10 None Hint 54). _____ is a result of quantum mechanical tunnel via barrier? ITunneling I Thermionic emission I sat All the above None Hint Read more about Tunneling. 55). A schottky diode exhibits high switching speed due to ____? Low forward voltage Short reverse recovery time Long reverse recovery time Both a and b None Hint 56). Which of the following are the advantages of Schottky diode? Low turn-on based voltage Fast recovery time Low junction capacitance All the above None Hint 57). A low junction capacitance in schottky diode occupies ____amount of area? Large Small Adequent Zero None Hint 58). Which of the following are the valid features of Schottky diode? Enhance efficiency Minimum forward voltage drop Low capacitance All the above None Hint 59). Which of the following are the majority charge carriers in P-type semiconductor? Electrons Holes Neutrons All the above None Hint 60). Which of the following are the majority charge carriers in N-type semiconductor? Electrons Holes Neutrons All the above None Hint 61). In reverse bias condition of any diode the barrier width is ____? Small Wide Medium Zero None Hint 62). How many Schottky diode TTL logic gates exists? 1 2 3 4 None Hint 63). Identify the TTL series of schottky diode? 74SXX 74LXX 73SXX 70SXX None Hint 64). Across which of the following transistor junctions Schottky diode is place? Emitter and base Base and collector Emitter and collector Collector and collector None Hint 65). A transistor has ____ number of terminals? 1 2 3 4 None Hint Read more about Transistor. 66). Which of the following is the center terminal in a transistor? Base Emitter Collector Substrate None Hint 67). Which of the following terminal resides on left of center terminal of a transistor? Base Emitter Collector Substrate None Hint 68). Which of the following terminal resides on right of center terminal of a transistor? Base Emitter Collector Substrate None Hint 69). Which of the following are the advantages of low power schottky diode? Enhance speed Enhance stability Low power dissipation All the above None Hint 70). Which of the following is the TTL series of low power schottky diode? 74LSXX 74LXX 74SXX 70LSXX None Hint 71). Which of the following is the TTL series of Advanced low power schottky diode? 74ALSXX 74LXX 74SXX 70LSXX None Hint 72). A schottky clamped transistor is a_____ device? Standard Bipolar Junction Transistor Schottky diode Zener diode Both a and b None Hint Read more about Zener Diode. 73). In which form schottky diode in connected to schottky clamped transistor across base collector junction? Serial Parallel Shunt Both b and c None Hint 74). During active region of schottky clamped transistor ____ region is reversed biased? Emitter-base Emitter-collector Emitter-collector Emitter-emitter None Hint 75). In active region of schottky clamped transistor the diode acts like ____? NPN transistor PNP transistor NPNP transistor PNPN transistor None Hint Schottky Diode Quiz Questions and Answers. 76). At which region in schottky clamped transistor operation, schottky diode becomes forward biased? Active Saturation Linear Non linear None Hint 77). At how much quantity of voltage Schottky diode in schottky clamped transistor clamps collector-base junction? 0.1V 0.2V 0.3V 0.4V None Hint 78). Which of the following is the application of TTL logic? Memory chips Oscillators RAM All the above None Hint 79). Abbreviate TTL logic according to component? Transistor Transistor Logic Time to live Transfer transistor All the above None Hint 80). How many minimum number of transistor are used in TTL logic? 2 3 4 5 None Hint 81). A TTL is a family of ____? BJT FET CMOS NMOS None Hint 82). Which of the following is the major task of TTL? Logic function Amplifying function Modulation Both a and b None Hint 83). Which of the following are the application of TTL IC? Computers Industrial control Synthesizers All the above None Hint 84). Which of the following scientist discovered TTL? James L Susan L Charles L Danial L None Hint 85). TTL is a ____ logic? Analog Digital ADC DAC None Hint 86). Which of the following transistor terminal of bipolar TTL is the input? Base Emitter Collector Both b and c None Hint 87). Which of the following is the input terminal of multi-emitter transistor? Base Emitter Collector Both b and c None Hint 88). Which of the following buffers output of 2 input TTL NAND? Common emitter Common base Common collector All the above None Hint 89). The base emitter junction of 2 input TTL NAND is ____ biased when applied voltage is high? Forward Reverse Both a and b Zero None Hint 90). Which of the following is the disadvantage of TTL logic? High resistance output High output voltage Zero load Both b and c None Hint 91). Which of the following is the advantage of TTL logic? High resistance output High output voltage Zero load Both b and c None Hint 92). HTTL stands for_______? High TTL Hike TTL Heap TTL All the above None Hint 93). LTTL stands for ___? Low power TTL Like power TTL Leap power TTL All the above None Hint 94). STTL stands for ___? Schottky power TTL Short power TTL Side power TTL All the above None Hint 95). LS TTL stands for ____? Low power TTL Last TTL Least TTL All the above None Hint 96). FAS TTL stands for ___? Fast Advance Schottky TTL Fast Advance Side TTL Fast Air Schottky TTL Fast Adhered Schottky TTL None Hint 97). Which of the following is the power supply value of Low voltage 3.3V 5V 4V 1V None Hint 98). Which of the following is the speed value of LSTTL? 95ns 10ns 9.5ns 1ns None Hint 99). Which of the following is the power consumption value of LSTTL? 2mW 3mW 4mW 5mW None Hint 100). Which of the following is the operation time of STTL? 3ns 2ns 1ns 5ns None Hint Time's up
