Transistor Transistor Logic Question & AnswersMarch 7, 2022 By WatElectronics This article lists 100 Active Filter MCQs for engineering students. All the Active Filter 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 Active Filter.The world of digital electronics deals with billions of ICs designed with numerous logic gates such as AND, OR, NOT, XOR, etc. These gates are designed according to various digital logic families. Digital logic families are classified into 2 types Uni-polar and Bi-polar. A uni-polar has a single polarity family such as PMOS, NMOS, and CMOS. Whereas a bi-polar is a dual polarity family such as Non-saturated (Schottky TTL, Emitter Coupled Logic) and Saturated (RTL, DTL, and TTL).TTL abbreviated as Transistor-Transistor Logic was invented by James in 1961 is a logic used for designing ICs for application-specific. TTL is designed using BJTs comprising of 2 transistors where one transistor performs a logic function and another transistor performs amplification. TTLs are classified into 6 types namely Standard TTL, Schottky TTL, High power TTL, Low power TTL, and Advanced Schottky TTL. The performance of TTL depends on FAN out (10), power dissipation, noise margin, and propagation delay.The advantages of TTL are they are easy to interface, immune to electric shocks, and good noise margin. They limit high current utilization, high power consumption, and less fan-out. TTL is used in computers, synthesizers, and test equipment’s1). TTL stands for _____? Transistor Transistor Logic Transistor Triode Logic Transistor Tire Logic Transistor Transistor Layer Hint2 same devices with 3 terminals.2).A TTL is designed using ______? BJT FET IGBT Both a and b HintCurrent-controlled and operated devices.3). Which of the following is the function of TTL? Logic function Amplification Modification Both a and b Hint2 functions.4). TTL performs logic function and amplification in oppose to ___ logics? RTL DTL CTL Both a and b Hint2 functions.5). Which of the following are the applications of TTL? Computers Synthesizers Test equipment’s All the above Hint3 applications. Read more about Computer Ports.6). Which of the following is IC package type of TTL? DIP FP SIP Both a and b Hint2 types.7). A DIP has ___ type of housing design? Square Rectangle Triangle Both a and b HintArea=length*breadth.8). Which of the following are the applications of DIP? ICs Ribbon cables RTC All the above Hint3 applications.9). James L invented ____? Computer IC TTL Gates HintA digital logic design in which bipolar transistor s act on direct-current pulses.10). Which of the input terminal of 2 TTL transistors (BJT)? Base Emitter Collector Source HintInput terminal.11). Identify the universal logic gates? AND NAND NOR Both b and c Hint2 universal gates. Read more about NOR Gate.12). Which of the following are the basic logic gates? OR AND NOT All the above Hint3 basic gates. Read more about AND Gate.13). Which of the following are the other logic gates? NOR XOR NAND Both a and b Hint2 logic gates.14). AND, NOR, OR and other types of gates performs ___ operations? Logic Arithmetic Abacus All the above Hint0's and 1's operation.15). Gates are constructed with ___ components? BJT FET Diode All the above Hint3 components. Read more about Diode.16). Which of the following are digital logic families? ECL CMOS TTL All the above 17). Which of the following digital logic families are rarely used in applications? ECL RTL DTL Both b and c Hint2 families.18). Which of the following is the original name of TTL? TCTL TRTL TTTL Both a and b HintA logic gating function and the amplifying function are performed by bipolar junction transistors (BJTs).19). Which of the following is the first TTL logic based device designed? Sylvania Universal High Level Logic family IC 5400 IC 7400 All the above HintThe first TTL logic based device designed is Sylvania Universal High Level Logic family.20). Which of the following is the second TTL logic based device designed? Sylvania Universal High Level Logic family IC 5400 IC 7400 All the above HintAre military grade and require tighter supply voltages and temperatures.21). Which of the following is the third TTL logic based device designed? Sylvania Universal High Level Logic family IC 5400 IC 7400 All the above HintSuitable to learn regarding digital logic & a universal-spare while particular logic functions are required.22). Which of the following companies where responsible for design of 7400 IC? Motorola AMD Mullard All the above Hint3 companies.23). A TTL has ___ number of transistors in its design? 1 2 3 4 HintEven number. Read more about Logic Gates.24). Which of the following are TTL logic? Standard TTL Fast TTL High power TTL All the above Hint3 types.25). Which of the following is the switching speed of low power TTL at 1mW? 33ns 6ns 20ns 11ns HintOdd value.TTL Interview Questions and Answers26). Which of the following is the switching speed of high power TTL? 33ns 6ns 20ns 10ns HintEven number.27). Which of the following is the power dissipation of high power TTL? 20mW 21mW 25mW 22mW HintEven number.28). Which of the following are the characteristics of Schottky TTL? Enhanced switching time Zero charge storage Lower power dissipation Both a and b Hint2 characteristics.29). The power dissipation in Schottky TTL is ____? High Low Zero Constant HintHigh temperature of device.30). Which of the following is the operation of gate terminal in Schottky TTL diode? 1ns 2ns 3ns 4ns HintOdd value.31). Which of the following is the power dissipation of Schottky TTL diode? 19mW 20mW 25mW 30mW HintOdd value.32). The resistance value of low power TTL is ____? High Low Zero Either a or b HintGreater device heating.33). Which of the following type of TTL increases low to high logic transition? Fast TTL Low power TTL Schottky TTL High power TTL HintGreater switching operation.34). Which of the following is the temperature (Centigrade) range of 7400? 0 to 70 degrees 0 to 60 degrees -55 to +125 degrees -70 to 0 degrees HintPositive range.35). Which of the following is the temperature (Centigrade) range of 5400? 0 to 70 degrees 0 to 60 degrees -55 to +125 degrees -70 to 0 degrees HintNegative to positive ranges.36). Which of the following is the major application of 5400 TTL series? Military Aerospace Telecom All the above HintDefense area.37). Which of the following is the major application of SNJ54 TTL series? Military Aerospace Telecom All the above HintSpacecraft.38). Which of the following are the measuring parameters of TTL performance? Fan Out Power dissipation Propagation delay All the above Hint3 parameters.39). _____ parameter of TTL defines as number of loads TTL output gate handles without disturbing input? Fan Out Power dissipation Propagation delay Fan-in HintA number of inputs that can be connected to a specified output.40). ____ parameter of TTL is measured in terms of mW? Fan Out Power dissipation Propagation delay Fan-in HintA process by which an electronic or electrical device produces heat (energy loss or waste) as an undesirable derivative of its primary action.41). _____ the product of average current drawn, and voltage supplied to device? Fan Out Power dissipation Propagation delay Fan-in HintA process by which an electronic or electrical device produces heat (energy loss or waste) as an undesirable derivative of its primary action.42). _____ is the transition time that elapses when change in input level? Fan Out Power dissipation Propagation delay Fan-in HintMeasured in Watts.43). ____ is defined as disturbance in signal? Fan Out Power dissipation Propagation delay Noise HintUnits: Decibels.44). Current is measured in terms of ____ units? Amperes Volts Watts Ohms HintOne coulomb per second.45). Voltage is measured in terms of ___ units? Amperes Volts Watts Ohms HintElectric potential.46). Which of the following is the power delay of fast TTL? 4pJ 10pJ 15pJ Both a and b HintEven number.47). Which of the following are the applications of open collector transistor? Relays Wired logic Common bus system All the above HintPassive components. Read more about Mho Relays.48). In an open collector transistor if input provided is high then the base-emitter junctions are biased in ____ way? Forward Reverse Zero Both b and c HintLesser depletion width. Read more about Transistor Biasing.49). In an open collector transistor if input provided is low then the base-emitter junctions are biased in ____ way? Forward Reverse Zero Both b and c HintOutput terminal of transistor.50). Which of the following is the voltage drop value across the primary transistor in open collector transistor? 0.9V 0.5V 0.3V 0.4V HintOdd value.TTL Quiz Questions and Answers.51). When input provided is low to an open collector transistor then the output drawn from other transistors is ____ value? Vcc High level Floating All the above Hint3 inputs.52). When input provided is high to an open collector transistor then the other transistors operates in ____ region or mode? Saturation Active Depletion All the above HintConducting state in a semiconductor junction.53). How many transistors are used in open collector output circuit? 1 2 3 4 HintOdd number.54). How many resistors are used in a open collector output circuit? 1 2 3 4 HintEven number.55). How many transistors are used in Totem pole output circuit? 1 2 3 4 HintEven number.56). How many resistors are used in a Totem pole output circuit? 1 2 3 4 HintEven number.57). To which of the following transistor terminal in Totem pole output circuit additional pull up is added? Base Emitter Gate Drain HintTransistor middle terminal.58). Which of the following components in Totem pole output circuit provide charging and discharging function of a capacitor? Transistor Diode Resistor Both a and b Hint2 components.59). Which of the following component in Totem pole output circuit safeguard device from breakdown? Transistor Diode Resistor Resistor HintMeasures in ohms.60). Which of the following is the low level logic voltage range in TTL? 0 to 0.2V 0 to 5V O to 0.4V 0 to 1V HintMinimum range.61). Which of the following is the high level logic voltage in TTL? 1V 2V 3V 5V HintOdd value.62). A fan out value of TTL is 10 supports ____ number of logic gates? 5 6 7 10 HintMaximum number.63). Which of the following is the power value drawn by basic TTL? 10mW 12mW 15mW 20mW HintEven number.64). Which of the following is the TTLs average propagation delay? 5nS 8nS 9nS 10nS HintOdd value.65). An advanced schottky diode has a delay of ____? 1.5ns 2ns 3ns 4ns HintOdd value.66). Power dissipation of schottky diode is _____? 1mW 2mW 3mW 4mW HintOdd value.67). In TTL device the 1 st and 2 nd names defines ____? Subfamily Temperature range Logic function Resistance value HintNames category.68). In TTL device the 1 st and 2 nd digits defines ____? Subfamily Temperature range Logic function Resistance value HintMeasures in degree centigrade.69). In TTL device last 2 digits defines ____? Subfamily Temperature range Logic function Resistance value HintBoolean function.70). Which of the following are the DIY applications of TTL? Computer Dryers Printers All the above Hint3 applications.71). Which of the following is the output of NOR logic gate when input is 0,0? 0 1 X None of the above HintLogic high.72). Which of the following is the output of NOR logic gate when input is 0,1? 0 1 X None of the above HintLogic low.73). Which of the following is the output of NOR logic gate when input is 1,0? 0 1 X None of the above HintLogic low.74). Which of the following is the output of NOR logic gate when input is 1,1? 0 1 X None of the above HintLogic low.75). Which of the following is the output of NOT logic gate when input is 1? 0 1 X None of the above HintLogic low.TTL MCQs for Exams76). Which of the following is the output of NOT logic gate when input is 0? 0 1 X None of the above HintLogic high.77). Which of the following is the basic gate in TTL? NAND NOR OR NOT HintUniversal gate.78). Which of the following is the basic gate in CMOS? NAND NOR OR Both a and b HintUniversal gates.79). Which of the following is the basic gate in ECL? NAND NOR OR Both a and b HintBasic gate.80). Which of the following are the components of CMOS? Passive elements Transistors MOSFET All the above HintUsed to switch or amplify voltages in circuits.81). Which of the following are the components of ECL? Passive elements Transistors MOSFET Both a and b Hint2 elements.82). Which of the following is the clock rate (MHz) of TTL? 35 10 >60 50 HintOdd value.83). Which of the following is the clock rate (MHz) of CMOS?? 35 10 >60 50 HintEven value. Read more about P and N type Semiconductors.84). Which of the following semiconductor substance has holes as majority carriers? P N PN None of the above HintTrivalent impurities.85). Which of the following semiconductor substance has electrons as majority carriers? P N PN None of the above HintPentavalent impurities.86). Which of the following is the advantage of CMOS? Good temperature stability Higher anti noise Low power consumption All the above Hint3 advantages.87). Which of the following is the disadvantage of CMOS? Absence of bipolarity Complex in design Practically difficult in implementation All the above Hint3 disadvantages.88). Which of the following is the clock rate (MHz) of ECL? 35 10 >60 50 HintEven value.89). Which of the following is figure of merit of TTL? 100 0.7 50 to 60 40 to 50 HintHigher value.90). Which of the following is figure of merit of CMOS? 100 0.7 50 to 60 40 to 50 HintOdd value.91). Which of the following is figure of merit of ECL? 100 0.7 50 to 60 40 to 50 HintMinimum range.92). Which of the following is the power value of CMOS? 10 0.0025 40 to 50 50 to 100 HintMinimum value.93). Which of the following is the power value of ECL? 10 0.0025 40 to 50 50 to 100 HintMinimum range.94). Which of the following logic family has extremely strong noise immunity? TTL CMOS ECL All the above HintP and N- type MOS.95). Which of the following logic family has low noise immunity? TTL CMOS ECL All the above HintTransistors input terminal based logic.96). Which of the following is the advantage of TTL? Easy to interface Immune to electric shock Good noise margin All the above Hint3 advantages.97). Which of the following is the disadvantage of TTL? High current utilization High power consumption Less fan-out All the above Hint3 disadvantages.98). A NOT logic gate is also called ____? Inverter Switch Toggler All the above HintInverse logic of input value.99). A CMOS transistor comprises of _____logic MOSFET? P-type N-type Both a and b Both a and b Hint2 types.100). Which of the following is the application of CMOS? Memory Microcontrollers Microprocessors All the above Hint3 applications. Please fill in the comment box below. Time is Up! Time's up
