Transistor Transistor Logic Question & Answers March 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’s 1). TTL stands for _____? Transistor Transistor Logic Transistor Triode Logic Transistor Tire Logic Transistor Transistor Layer None Hint 2).A TTL is designed using ______? BJT FET IGBT Both a and b None Hint 3). Which of the following is the function of TTL? Logic function Amplification Modification Both a and b None Hint 4). TTL performs logic function and amplification in oppose to ___ logics? RTL DTL CTL Both a and b None Hint 5). Which of the following are the applications of TTL? Computers Synthesizers Test equipment’s All the above None Hint Read more about Computer Ports. 6). Which of the following is IC package type of TTL? DIP FP SIP Both a and b None Hint 7). A DIP has ___ type of housing design? Square Rectangle Triangle Both a and b None Hint 8). Which of the following are the applications of DIP? ICs Ribbon cables RTC All the above None Hint 9). James L invented ____? Computer IC TTL Gates None Hint 10). Which of the input terminal of 2 TTL transistors (BJT)? Base Emitter Collector Source None Hint 11). Identify the universal logic gates? AND NAND NOR Both b and c None Hint Read more about NOR Gate. 12). Which of the following are the basic logic gates? OR AND NOT All the above None Hint Read more about AND Gate. 13). Which of the following are the other logic gates? NOR XOR NAND Both a and b None Hint 14). AND, NOR, OR and other types of gates performs ___ operations? Logic Arithmetic Abacus All the above None Hint 15). Gates are constructed with ___ components? BJT FET Diode All the above None Hint Read more about Diode. 16). Which of the following are digital logic families? ECL CMOS TTL All the above None 17). Which of the following digital logic families are rarely used in applications? ECL RTL DTL Both b and c None Hint 18). Which of the following is the original name of TTL? TCTL TRTL TTTL Both a and b None Hint 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 None Hint 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 None Hint 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 None Hint 22). Which of the following companies where responsible for design of 7400 IC? Motorola AMD Mullard All the above None Hint 23). A TTL has ___ number of transistors in its design? 1 2 3 4 None Hint Read more about Logic Gates. 24). Which of the following are TTL logic? Standard TTL Fast TTL High power TTL All the above None Hint 25). Which of the following is the switching speed of low power TTL at 1mW? 33ns 6ns 20ns 11ns None Hint TTL Interview Questions and Answers 26). Which of the following is the switching speed of high power TTL? 33ns 6ns 20ns 10ns None Hint 27). Which of the following is the power dissipation of high power TTL? 20mW 21mW 25mW 22mW None Hint 28). Which of the following are the characteristics of Schottky TTL? Enhanced switching time Zero charge storage Lower power dissipation Both a and b None Hint 29). The power dissipation in Schottky TTL is ____? High Low Zero Constant None Hint 30). Which of the following is the operation of gate terminal in Schottky TTL diode? 1ns 2ns 3ns 4ns None Hint 31). Which of the following is the power dissipation of Schottky TTL diode? 19mW 20mW 25mW 30mW None Hint 32). The resistance value of low power TTL is ____? High Low Zero Either a or b None Hint 33). Which of the following type of TTL increases low to high logic transition? Fast TTL Low power TTL Schottky TTL High power TTL None Hint 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 None Hint 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 None Hint 36). Which of the following is the major application of 5400 TTL series? Military Aerospace Telecom All the above None Hint 37). Which of the following is the major application of SNJ54 TTL series? Military Aerospace Telecom All the above None Hint 38). Which of the following are the measuring parameters of TTL performance? Fan Out Power dissipation Propagation delay All the above None Hint 39). _____ parameter of TTL defines as number of loads TTL output gate handles without disturbing input? Fan Out Power dissipation Propagation delay Fan-in None Hint 40). ____ parameter of TTL is measured in terms of mW? Fan Out Power dissipation Propagation delay Fan-in None Hint 41). _____ the product of average current drawn, and voltage supplied to device? Fan Out Power dissipation Propagation delay Fan-in None Hint 42). _____ is the transition time that elapses when change in input level? Fan Out Power dissipation Propagation delay Fan-in None Hint 43). ____ is defined as disturbance in signal? Fan Out Power dissipation Propagation delay Noise None Hint 44). Current is measured in terms of ____ units? Amperes Volts Watts Ohms None Hint 45). Voltage is measured in terms of ___ units? Amperes Volts Watts Ohms None Hint 46). Which of the following is the power delay of fast TTL? 4pJ 10pJ 15pJ Both a and b None Hint 47). Which of the following are the applications of open collector transistor? Relays Wired logic Common bus system All the above None Hint 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 None Hint 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 None Hint 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 None Hint 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 None Hint 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 None Hint 53). How many transistors are used in open collector output circuit? 1 2 3 4 None Hint 54). How many resistors are used in a open collector output circuit? 1 2 3 4 None Hint 55). How many transistors are used in Totem pole output circuit? 1 2 3 4 None Hint 56). How many resistors are used in a Totem pole output circuit? 1 2 3 4 None Hint 57). To which of the following transistor terminal in Totem pole output circuit additional pull up is added? Base Emitter Gate Drain None Hint 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 None Hint 59). Which of the following component in Totem pole output circuit safeguard device from breakdown? Transistor Diode Resistor Resistor None Hint 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 None Hint 61). Which of the following is the high level logic voltage in TTL? 1V 2V 3V 5V None Hint 62). A fan out value of TTL is 10 supports ____ number of logic gates? 5 6 7 10 None Hint 63). Which of the following is the power value drawn by basic TTL? 10mW 12mW 15mW 20mW None Hint 64). Which of the following is the TTLs average propagation delay? 5nS 8nS 9nS 10nS None Hint 65). An advanced schottky diode has a delay of ____? 1.5ns 2ns 3ns 4ns None Hint 66). Power dissipation of schottky diode is _____? 1mW 2mW 3mW 4mW None Hint 67). In TTL device the 1 st and 2 nd names defines ____? Subfamily Temperature range Logic function Resistance value None Hint 68). In TTL device the 1 st and 2 nd digits defines ____? Subfamily Temperature range Logic function Resistance value None Hint 69). In TTL device last 2 digits defines ____? Subfamily Temperature range Logic function Resistance value None Hint 70). Which of the following are the DIY applications of TTL? Computer Dryers Printers All the above None Hint 71). Which of the following is the output of NOR logic gate when input is 0,0? 0 1 X None of the above None Hint 72). Which of the following is the output of NOR logic gate when input is 0,1? 0 1 X None of the above None Hint 73). Which of the following is the output of NOR logic gate when input is 1,0? 0 1 X None of the above None Hint 74). Which of the following is the output of NOR logic gate when input is 1,1? 0 1 X None of the above None Hint 75). Which of the following is the output of NOT logic gate when input is 1? 0 1 X None of the above None Hint TTL MCQs for Exams 76). Which of the following is the output of NOT logic gate when input is 0? 0 1 X None of the above None Hint 77). Which of the following is the basic gate in TTL? NAND NOR OR NOT None Hint 78). Which of the following is the basic gate in CMOS? NAND NOR OR Both a and b None Hint 79). Which of the following is the basic gate in ECL? NAND NOR OR Both a and b None Hint 80). Which of the following are the components of CMOS? Passive elements Transistors MOSFET All the above None Hint 81). Which of the following are the components of ECL? Passive elements Transistors MOSFET Both a and b None Hint 82). Which of the following is the clock rate (MHz) of TTL? 35 10 >60 50 None Hint 83). Which of the following is the clock rate (MHz) of CMOS?? 35 10 >60 50 None Hint 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 None Hint 85). Which of the following semiconductor substance has electrons as majority carriers? P N PN None of the above None Hint 86). Which of the following is the advantage of CMOS? Good temperature stability Higher anti noise Low power consumption All the above None Hint 87). Which of the following is the disadvantage of CMOS? Absence of bipolarity Complex in design Practically difficult in implementation All the above None Hint 88). Which of the following is the clock rate (MHz) of ECL? 35 10 >60 50 None Hint 89). Which of the following is figure of merit of TTL? 100 0.7 50 to 60 40 to 50 None Hint 90). Which of the following is figure of merit of CMOS? 100 0.7 50 to 60 40 to 50 None Hint 91). Which of the following is figure of merit of ECL? 100 0.7 50 to 60 40 to 50 None Hint 92). Which of the following is the power value of CMOS? 10 0.0025 40 to 50 50 to 100 None Hint 93). Which of the following is the power value of ECL? 10 0.0025 40 to 50 50 to 100 None Hint 94). Which of the following logic family has extremely strong noise immunity? TTL CMOS ECL All the above None Hint 95). Which of the following logic family has low noise immunity? TTL CMOS ECL All the above None Hint 96). Which of the following is the advantage of TTL? Easy to interface Immune to electric shock Good noise margin All the above None Hint 97). Which of the following is the disadvantage of TTL? High current utilization High power consumption Less fan-out All the above None Hint 98). A NOT logic gate is also called ____? Inverter Switch Toggler All the above None Hint 99). A CMOS transistor comprises of _____logic MOSFET? P-type N-type Both a and b Both a and b None Hint 100). Which of the following is the application of CMOS? Memory Microcontrollers Microprocessors All the above None Hint Please fill in the comment box below. Time's up
