Schottky Diode Question & AnswersJanuary 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 Hint3 names.2). Which of the following scientist discovered Schottky diode? Walter H Schottky James Schottky Richard Daniel Schottky HintA German physicist.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 HintBy running a current through this dc resistance will cause? Read more about Voltage4). A diode has ____ number of terminals? 1 2 3 4 HintMinimum number of terminals.5). Which of the following is the primitive application of Schottky diode? Wireless rectifiers Metal rectifiers Metal detectors All the above HintElectronic appliances. 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 Hint3 types.7). A Schottky diode consist of ___ pins? 1 2 3 4 HintPositive and negative terminal.8). Identify the type of diode shown in the image below?Diode PN diode Zener Diode Schottky diode SCR diode HintA hot carrier diode.9). Identify the Anode terminal of the diode from the following diagram?Diode 1 2 3 Both a and b HintPositive terminal.10). Identify the Cathode terminal of the diode from the following diagram?Diode 1 2 3 Both a and b HintNegative terminal.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 HintHigher value voltage.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 HintMinimum voltage value.13). A Schotkky diode with minimum forward type voltage provides _____ factors? High switching speed High system efficiency Low power consumption Both a and b HintWorking metrics of schottky diode.14). Which of the following was the first Schottky diode design with cut open packaging? IN5822 IN 5522 IN2255 IN2258 HintIN series.15). Which of the following combination junction forms a schottky diode? Semiconductor and Semiconductor Metal and Semiconductor Conductor and Semiconductor Both b and c HintBad conductor of current and semi bad conductor of current.16). Which of the following type of metal substance are used in Schottky diode fabrication? Molybdenum Platinum Chromium All the above HintChemical elements.17). Which of the following is the semiconductor material used in Schottky diode? P-type N-type PN All the above HintElectrons as majority carriers.18). Which of the following type acts as anode in Schottky diode? Metal N-type P-type All the above HintBad electric conductor.19). Which of the following type acts as cathode in Schottky diode? Metal N-type P-type All the above HintElectrons as majority carriers.20). A conventional current in Schottky diode flows from_________. Anode to Cathode Cathode to Anode Cathode to Cathode HintPositive to Negative terminal.21). Which of the following creates Schottky diode barrier? P-type N-type PN-type All the above HintContains both holes and electrons as majority carriers.22). Which of the following diode substance type has less forward voltage? Ptype Ntype PN type All the above HintHoles as majority carriers.23). Which of the following type of substances with stands temperature value of diode? Silicides Titanium Silicides Germanium Silicides All the above Hint3 types.24). What happens to depletion region during forward biasing of diode? Thin Widens Thickens Both b and c HintReduces.25). At low doping levels the schottky diode behaves as ______? Rectifier Ohmic device Non ohmic device All the above HintAn electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC).Schottky Diode Interview Questions and Answers26). At high doping levels the schottky diode behaves as ______? Rectifier Ohmic device Ohmic device All the above HintHigh resistance device.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 HintThe amount of time current flows in the reverse direction when the forward current instantaneously switches directions due to residual stored charge.28). Which of the following is the reverse recovery time value of pn diode? <100ns >100ns 100 ns 1000ns HintLower values.29). Which of the following is the switching time value of schottky diode? 100ps 200ps 300ps 400ps HintMinimum value.30). A schottky diode has ____ carriers? Majority Minority Both a and b No carriers HintHigher charge concentration.31). Which of the following is the voltage value of silicon diode? 0.7V 0.3V 0.4V 0.5V HintMaximum voltage.32). Which of the following is the voltage value of germanium diode? 0.7V 0.3V 0.4V 0.5V HintMinimum voltage.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 HintMid range.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 HintSupply metrics applications.35). A Schottky diode has ______ current density? Higher Lower Zero Infinity HintMaximum value.36). How much quantity of heat is dissipated during forward voltage drop? High Low Infinity Zero HintMinimum value.37). Which of the following are the application of Schottky diode? Voltage clamping Switch mode power supply Sample and hold circuits All the above Hint3 basic applications.38). A schottky diode is a ___ component? Electronic Electrical Mechanical All the above HintContains transistor component.39). Which of the following are appliance application of schottky diode? Mixer Radio frequency Rectifiers All the above HintPassive components.40). A schottky diode has _____ type of junction? Uni Bi Tri Multi HintSingle.41). Uni type direction mean_____? Single Double Multi Zero HintSingle direction.42). A c is a function of ____dropping? Voltage Current Temperature Humidity HintMeasurement of pressure.43). Operation of schottky diode is represented using ______? VI VR RI VIR HintBasic electronic parameters. 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 HintMeasured in terms of volts.45). Which of the following parameter is represented on Y-axis in VI characteristics of schottky diode? Voltage Current Ohms Both a and b HintMeasured in terms of amperes.46). Current is measured in terms of _____ units? Amperes Volts Ohms Joules HintSI units of current.47). Voltage is measured in terms of _____ units? Amperes Volts Resistance Joules HintMeasured using voltmeter.48). Resistance is measured in terms of _____ units? Amperes Volts Ohms Joules HintMeasured using either multimeter or ohmeter.49). Which of the following substance leads to schottky diode breakdown? Silicon Aluminum Iron Graphite HintPentavalent substance.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 HintMajority of holes as carriers.Schottky Diode Important Questions for Interviews51). 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 HintSum of terms.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 HintProduct of terms and division.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 HintHighest power.54). _____ is a result of quantum mechanical tunnel via barrier? ITunneling I Thermionic emission I sat All the above HintBased on tunneling. 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 Hint2 parameters.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 Hint3 advantages.57). A low junction capacitance in schottky diode occupies ____amount of area? Large Small Adequent Zero HintLess value.58). Which of the following are the valid features of Schottky diode? Enhance efficiency Minimum forward voltage drop Low capacitance All the above HintDiodes metric features.59). Which of the following are the majority charge carriers in P-type semiconductor? Electrons Holes Neutrons All the above HintPositive carriers.60). Which of the following are the majority charge carriers in N-type semiconductor? Electrons Holes Neutrons All the above HintNegative carriers.61). In reverse bias condition of any diode the barrier width is ____? Small Wide Medium Zero HintLarge size of barrier.62). How many Schottky diode TTL logic gates exists? 1 2 3 4 HintOdd value.63). Identify the TTL series of schottky diode? 74SXX 74LXX 73SXX 70SXX HintHas single letter in series.64). Across which of the following transistor junctions Schottky diode is place? Emitter and base Base and collector Emitter and collector Collector and collector HintMid and external terminal of transistor.65). A transistor has ____ number of terminals? 1 2 3 4 HintOdd terms. Read more about Transistor.66). Which of the following is the center terminal in a transistor? Base Emitter Collector Substrate HintMid terminal of transistor.67). Which of the following terminal resides on left of center terminal of a transistor? Base Emitter Collector Substrate HintInput terminal of transistor.68). Which of the following terminal resides on right of center terminal of a transistor? Base Emitter Collector Substrate HintOutput terminal of transistor.69). Which of the following are the advantages of low power schottky diode? Enhance speed Enhance stability Low power dissipation All the above HintPerformance parameters.70). Which of the following is the TTL series of low power schottky diode? 74LSXX 74LXX 74SXX 70LSXX Hint2 parameters in series.71). Which of the following is the TTL series of Advanced low power schottky diode? 74ALSXX 74LXX 74SXX 70LSXX Hint3 parameters in series.72). A schottky clamped transistor is a_____ device? Standard Bipolar Junction Transistor Schottky diode Zener diode Both a and b Hint2 names. 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 HintConcurrently.74). During active region of schottky clamped transistor ____ region is reversed biased? Emitter-base Emitter-collector Emitter-collector Emitter-emitter HintInput out put terminal configuration of a transistor.75). In active region of schottky clamped transistor the diode acts like ____? NPN transistor PNP transistor NPNP transistor PNPN transistor HintElectrons as majority carriers.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 HintWorking region.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 HintHigh value.78). Which of the following is the application of TTL logic? Memory chips Oscillators RAM All the above HintStorage applications.79). Abbreviate TTL logic according to component? Transistor Transistor Logic Time to live Transfer transistor All the above HintCombination of passive components.80). How many minimum number of transistor are used in TTL logic? 2 3 4 5 HintBi transistors.81). A TTL is a family of ____? BJT FET CMOS NMOS HintUsed as amplifiers or switches to produce wide applicability in electronic equipment include mobile phones, industrial control, television, and radio transmitters.82). Which of the following is the major task of TTL? Logic function Amplifying function Modulation Both a and b HintGates component performance.83). Which of the following are the application of TTL IC? Computers Industrial control Synthesizers All the above Hint3 applications.84). Which of the following scientist discovered TTL? James L Susan L Charles L Danial L HintAmerican physicist.85). TTL is a ____ logic? Analog Digital ADC DAC Hint0's and 1's.86). Which of the following transistor terminal of bipolar TTL is the input? Base Emitter Collector Both b and c HintInput terminal of transistor.87). Which of the following is the input terminal of multi-emitter transistor? Base Emitter Collector Both b and c HintInput terminal of ideal transistor.88). Which of the following buffers output of 2 input TTL NAND? Common emitter Common base Common collector All the above HintInput terminal of ideal transistor.89). The base emitter junction of 2 input TTL NAND is ____ biased when applied voltage is high? Forward Reverse Both a and b Zero HintLess depletion region.90). Which of the following is the disadvantage of TTL logic? High resistance output High output voltage Zero load Both b and c HintA parameter that defines current opposition.91). Which of the following is the advantage of TTL logic? High resistance output High output voltage Zero load Both b and c HintOhms law parameters.92). HTTL stands for_______? High TTL Hike TTL Heap TTL All the above HintMaximum value.93). LTTL stands for ___? Low power TTL Like power TTL Leap power TTL All the above HintMinimum power.94). STTL stands for ___? Schottky power TTL Short power TTL Side power TTL All the above HintSTTL stands for diode based TTL.95). LS TTL stands for ____? Low power TTL Last TTL Least TTL All the above HintLS TTL stands for low power ttl.96). FAS TTL stands for ___? Fast Advance Schottky TTL Fast Advance Side TTL Fast Air Schottky TTL Fast Adhered Schottky TTL HintFAS TTL stands for Fast Advance Schottky TTL.97). Which of the following is the power supply value of Low voltage 3.3V 5V 4V 1V HintMinimum value.98). Which of the following is the speed value of LSTTL? 95ns 10ns 9.5ns 1ns HintOdd value.99). Which of the following is the power consumption value of LSTTL? 2mW 3mW 4mW 5mW HintMaximum value.100). Which of the following is the operation time of STTL? 3ns 2ns 1ns 5ns HintOdd value. Time's up
