Noise Margin Question & Answers November 1, 2022 By WatElectronics This article lists 50 Noise Margin MCQs for engineering students. All the Noise Margin 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, or interviews, or professionals who would like to brush up on the fundamentals of Noise Margin. The noise margin explains what margin is available for noise and to what extent the noise is allowed so that we can have a proper extraction of logic 1 and 0. In digital circuits, we don’t receive only two voltages but practically we may receive a range of voltages. There is a range of voltages, so based on the received voltage we identify whether the received signal is logic 1 or logic 0. The received voltage range will get wider based on noise in the circuit, so if noise is more than the range of that voltage get wider. The noise margin is required for errorless transmission, it is one of the parameters that allow us to determine the allowable noise voltage on the input so that the output will not be corrupted. In simple words, this parameter tells how much noise is present in a gate. The noise margin is one of the characteristics of the logic family. So, it is a measure of design margins used to check whether circuits are working properly in specified conditions or not. Here, noise sources mainly include the power supply, operation environment, radiation waves, and electric & magnetic fields. 1). The VOH-VIH is the formula of ____________________ noise margin? Voltage Current Both a and b None of the above None Hint 2). The difference between noise value and signal value is known as _______________? Voltage transfer characteristics Noise margin Power efficiency None of the above None Hint 3). The min {VOH-VIH, VIL-VOL} is the formula of ________________ noise margin? Static Dynamic Both a and b None of the above None Hint 4). What is the meaning of VOHmin? Minimum output voltage in the high state Minimum Input voltage in the low state Maximum output voltage in the high state Maximum Input voltage in the low state None Hint 5). What is the standard form of NMH? Normal Margin High Noise Maximum High Noise Margin High None of the above None Hint 6). Which one of the following is a modified form of DTL? RTL TTL ECL None of the above None Hint 7). The power requirement is ___________________ in CMOS? High Very high Low Moderate None Hint 8). The noise margin of TTL logic family is ____________________? 0.4 dB 0.2 dB 3 dB None of the above None Hint 9). The propagation delay of TTL family is _____________? 3 A 2 V 25 V 10 ns None Hint 10). The noise margin is categorized into ____________________ types? One Two Three Four None Hint 11). The value of common metal oxide semiconductor noise margin is ______________? 4 V 5 V 3 dB None of the above None Hint 12). The 74 is the prefix of __________________ logic family? Standard TTL High speed TTL Low power TTL Schottky TTL None Hint 13). The propagation delay of common metal oxide semiconductor logic family is _____________? 3 A 2 ns 25 V 25 ns None Hint 14). The 74AS is the prefix of __________________ logic family? Standard TTL High speed TTL Advanced Schottky TTL Low power Schottky TTL None Hint 15). What is the standard form of NML? Normal Margin Low Noise Maximum Low Noise Margin Low None of the above None Hint 16). What is the meaning of VIHmin? Minimum output voltage in the high state Minimum Input voltage in the high state Maximum output voltage in the high state Maximum Input voltage in the low state None Hint 17). What is the standard form of JPAWPDF? Joint Pulse Amplitude Width Probability Density Function Joint Phase Amplitude Width Probability Density Function Joint Pulse Amplitude Width Phase Density Function None of the above None Hint 18). The noise margin of Schottky TTL logic is family is ____________________? 0.4 dB 0.2 dB 3 dB None of the above None Hint 19). The propagation delay of emitter coupled logic family is _____________? 3 A 2 ns 25 V 10 ns None Hint 20). The VIL-VOL is the formula of ____________________ noise margin? Voltage Current Both a and b None of the above None Hint Noise Margin MCQ for Students 21). What is the meaning of VILmax? Output voltage in the high state Input voltage in the high state Output voltage in the low state Input voltage in the low state None Hint 22). What is the standard form of PWPDF? Probability Width Probability Density Function Pulse Width Pulse Density Function Pulse Width Probability Density Function None of the above None Hint 23). Which one of the following used in high-speed operation? ECL CMOS Both a and b None of the above None Hint 24). The value of emitter coupled logic noise margin is ______________? 4 V 0.2 dB 3 V None of the above None Hint 25). What is the standard form of VTC? Voltage Transfer Controller Voltage Transformer Characteristics Voltage Transfer Characteristics None of the above None Hint 26). The noise margin of_______________ transistor-transistor logic family is 0.4 dB? Schottky TTL Low power Schottky TTL TTL All of the above None Hint Read more about Transistor-Transistor Logic 27). If VILmax is 0.8V, VOLmax is 0.33V then the value of NML is equal to __________________? 0.7 A 2.3 A 0.1 A 0.47 V None Hint 28). The 74H is the prefix of __________________ logic family? Standard TTL High speed TTL Low power TTL Schottky TTL None Hint 29). The figure shown below is a graphical analysis of ______________ gate? CMOS FET JFET None of the above None Hint 30). What is the standard form of SNM? Small Noise Margin Static Noise Margin Static Normal Margin None of the above None Hint 31). The 74LS is the prefix of __________________ logic family? Standard TTL High speed TTL Low power TTL Low power Schottky TTL None Hint 32). What is the standard form of PCMOS? Pulse Controller Metal Oxide Semiconductor Probabilistic Common Material Oxide Semiconductor Probabilistic Common Metal Oxide Semiconductor None of the above None Hint 33). The figure shown below is a ____________________ circuit diagram? Noise margin Thermal efficiency Noise amplification None of the above None Hint 34). The 74ALS is the prefix of __________________ logic family? Standard TTL Advanced low power TTL Advanced Schottky TTL Low power Schottky TTL None Hint 35). What is the standard form of DNM? Digital Noise Margin Dynamic Noise Margin Differential Normal Margin None of the above None Hint 36). How many types of noise margins are there? Three Four Five Two None Hint 37). If VOHmin is 4.3V, VIHmin is 2.0V then the value of NMH is equal to __________________? 0.7 V 2.3 V 0.4 V 6 V None Hint 38). The 74S is the prefix of __________________ logic family? Standard TTL High speed TTL Low power TTL Schottky TTL None Hint 39). In which one of the following one the noise immunity is excellent? Coaxial Fiber optics Twisted pair None of the above None Hint 40). What is the standard form of SNMH? Small Noise Margin High Static Noise Margin High Static Normal Margin High None of the above None Hint Noise Margin MCQ for Exams 41). If VIL=0.8V, VOL=0.4V then the value of NML is equal to __________________? 1 V 3 V 0.4 V 6 V None Hint 42). What is the standard form of PRCA? Probabilistic Ripple Carry Angle Probabilistic Ripple Carry Adder Pulse Ripple Carry Adder None of the above None Hint 43). Which one of the following is used in large scale integrate? IIL CMOS Both a and b None of the above None Hint 44). If VOHmin=2.7V, VIHmin=2.0V then the value of NMH is equal to __________________? 0.7 V 3 V 0.4 V 6 V None Hint 45). What is the standard form of SNML? Small Noise Margin Low Static Noise Margin Low Static Normal Margin Low None of the above None Hint 46). In which one of the following one the noise immunity is low? Coaxial Fiber optics Twisted pair None of the above None Hint 47). In which one of the following one the relative cost is high? Coaxial Fiber optics Twisted pair None of the above None Hint 48). The 74L is the prefix of __________________ logic family? Standard TTL High speed TTL Low power TTL Schottky TTL None Hint 49). What is the meaning of VOLmax? Output voltage in the high state Input voltage in the high state Output voltage in the low state Input voltage in the low state None Hint 50). If VOH=2.4V, VIH=2V then the value of NMH is equal to __________________? 1 V 3 V 0.4 V 6 V None Hint Please fill in the comment box below. Time's up
