Sampling Theory and Pulse Modulation Question & AnswersJuly 6, 2021 By WatElectronics This article lists 100 Sampling Theory and Pulse Modulation MCQs for engineering students. All the Sampling Theory and Pulse Modulation Questions & Answers given below includes solution and link wherever possible to the relevant topic.Sampling theory is a basic process to convert continuous-time signals to discrete-time signals. When we convert continuous-time signal to discrete-time signal, we need to take a sufficient number of samples, so that we can reconstruct the original signal from the sampled signal. The number of samples to be taken mainly depends on the maximum frequency of the signal. Basically, there are three types of sampling they are ideal sampling, natural sampling, and flat-top sampling. The amplitude, position, width are the different parameters to characterize a pulse. 1). The modulation is classified into _______OneTwoThreeFourHintThe modulation is classified into two types they are continuous wave modulation and pulse modulation 2). _____________ are continuous wave modulations?Amplitude modulationAngle modulationAnalog modulationBoth a and bHintBoth amplitude and angle modulations are continuous wave modulation 3). _____________ are pulse-type modulations?Amplitude modulationDigital modulationAnalog modulationBoth b and cHintBoth analog and digital modulations are pulse-type modulations 4). _____________ are type of angle modulationFrequency modulationPhase modulationPulse amplitude modulationBoth a and bHintBoth frequency and phase modulations are types of angle modulation 5). ___________ are type of analog modulationPAMPTMBoth a and bNone of the aboveHintBoth PAM and PTM are types of analog modulation 6). Pulse width modulation is a type of _________ modulationAnalogAngleDigitalNone of the aboveHintPulse width modulation is a type of analog modulation 7). Pulse code modulation is a type of _________ modulationAnalogAngleDigitalNone of the aboveHintPulse code modulation is a type of digital modulation 8). In _______ modulation, the carrier waves are in the form of pulsesPulse modulationContinuous modulationBoth a and bNone of the aboveHintIn pulse modulation, the carrier waves are in the form of pulses 9). In _______ modulation, the carrier waves are in the form of continuousPulse modulationContinuous modulationBoth a and bNone of the aboveHintIn continuous modulation, the carrier waves are in the form of continuous 10). The pulse width modulation is a type of ________ modulationPulse timePulse amplitudeDigitalNone of the aboveHintThe pulse width modulation is a type of pulse time modulation 11). In _______ modulation, the carrier wave of the pulse varies on the time axisPTMPAMPWMNone of the aboveHintIn pulse time modulation, the carrier wave of the pulse varies on the time axis 12). In _______ modulation, the pulses of the carrier wave are varied according to the message signalPTMPAMPWMNone of the aboveHintIn pulse width modulation, the pulses of the carrier wave are varied according to the message signal 13). The pulse position modulation is a type of _________ modulationAnalogAngleDigitalNone of the aboveHintThe pulse position modulation is a type of analog modulation 14). In _______ modulation, the pulses of the carrier wave are varied according to the message signalPTMPAMPWMPPMHintIn pulse position modulation, the pulses of the carrier wave are varied according to the message signal 15). The sampling is divided into ______ typesOneTwoThreeFourHintThe sampling is divided into two types they are large sample test and small sample test 16). If the size of the sample is greater than or equal to thirty is called a ____________Large sample testSmall sample testBoth a and bNone of the aboveHintIf the size of the sample is greater than or equal to thirty is called a large sample test 17). If the size of the sample is less than thirty is called a ____________Large sample testSmall sample testBoth a and bNone of the aboveHintIf the size of the sample is less than thirty is called a small sample test 18). The sample standard deviation is represented by _________SµσNone of the aboveHintThe sample standard deviation is represented by a letter S 19). The population mean is represented by _____________SµσNone of the aboveHintThe population mean is represented by a symbol µ 20). The population standard deviation is represented by _____________SµσNone of the aboveHintThe population standard deviation is represented by a symbol σ 21). The probability sampling is also known as ____________ samplingRepresentativeNon-representativeEither a or bNone of the aboveHintProbability sampling is also known as a representative sampling 22). The non-probability sampling is also known as ____________ samplingRepresentativeNon-representativeEither a or bNone of the aboveHintNon-probability sampling is also known as non-representative sampling 23). The non-probability sampling divided into ___________ typesOneTwoThreeFourHintThe non-probability sampling divided into four types they are quota sampling, convenience sampling, judgment sampling, and purposeful sampling 24). _____________ are the probability sampling techniquesSimple random samplingSystematic samplingStratified and cluster samplingAll of the aboveHintSimple random sampling, systematic sampling, stratified, and cluster sampling are the probability sampling techniques 25). The strengths of the convenience sampling is ___________Least time consumingMost convenientLeast expensiveAll of the aboveHintThe strengths of the convenience sampling are Least time consuming, most convenient, and least expensiveSampling Theory and Pulse Modulation MCQs for Exams 26). The strengths of the judgement sampling is ___________ConvenientNot time consumingNot time consumingAll of the aboveHintThe judgment sampling is convenient, cost-effective, and it is not time-consuming 27). The cluster sampling is __________Easy to implementCost-effectiveBoth a and bNone of the aboveHintThe cluster sampling is easy to implement and cost-effective 28). The strengths of the systematic sampling is ___________It can increase representativenessSampling frame is not necessaryEasy to implementAll of the aboveHintThe strengths of the systematic sampling is easy to implement, the sampling frame is not necessary, and it can increase representativeness 29). The simple random sampling can be ____________Easily understoodResults are projectableBoth a and bNone of the aboveHintThe simple random sampling can be easily understood and the results are projectable 30). _________ error is a type of random errorSamplingNon-samplingBoth a and bNone of the aboveHintSampling error is a type of random error 31). _________ error is a type of random or non-random errorSamplingNon-samplingBoth a and bNone of the aboveHintNon-sampling error is a type of random or non-random error 32). The non-sampling error occurs in _________CensusSampleBoth a and bNone of the aboveHintThe non-sampling error occurs in both census and sample 33). The sampling error occurs in _________CensusSampleBoth a and bNone of the aboveHintThe sampling error occurs only in sample 34). The variable parameter of a pulsed carrier in PAM is __________AmplitudeWidthPositionNone of the aboveHintThe variable parameter of a pulsed carrier in the PAM is amplitude 35). The variable parameter of a pulsed carrier in PWM is __________AmplitudeWidthPositionNone of the aboveHintThe variable parameter of a pulsed carrier in the PWM is width 36). The variable parameter of a pulsed carrier in PPM is __________AmplitudeWidthPositionNone of the aboveHintThe variable parameter of a pulsed carrier in the PPM is position 37). The bandwidth requirement is high in _________PAMPPMPWMBoth b and cHintThe bandwidth requirement is high in both PPM and PWM 38). The bandwidth requirement is low in _________PAMPPMPWMNone of the aboveHintThe bandwidth requirement is low in PAM 39). The noise immunity is low in _________PAMPPMPWMNone of the aboveHintThe noise immunity is low in PAM 40). The noise immunity is high in _________PAMPPMPWMBoth b and cHintThe noise immunity is high in both PPM and PWM 41). The transmitted power in PAM varies with ________Amplitude of pulsesVariation in widthRemains constantAll of the aboveHintThe transmitted power in PAM varies with the amplitude of pulses 42). The transmitted power in PWM varies with ________Amplitude of pulsesVariation in widthRemains constantAll of the aboveHintThe transmitted power in PWM varies with variation in width 43). The transmitted power in PPM varies with ________Amplitude of pulsesVariation in widthRemains constantAll of the aboveHintThe transmitted power in PPM remains constant 44). In PAM information contained in _________ variationsAmplitudePositionWidthAll of the aboveHintIn PAM information contained in amplitude variations 45). In PPM information contained in _________ variationsAmplitudePositionWidthAll of the aboveHintIn PPM information contained in position variations 46). The advantages of PPM are ________Noise immunity is goodRequires constant transmitter power outputBoth a and bNone of the aboveHintIn PPM the noise immunity is good and it requires a constant transmitter power output 47). The disadvantages of PPM are ________Requires large bandwidthRequires synchronization between receiver and transmitterBoth a and bNone of the aboveHintThe PPM requires large bandwidth and synchronization between receiver and transmitter 48). The PPM used for ____Optical communication systemMilitary applicationBoth a and bNone of the aboveHintThe PPM used for an optical communication system, military application, etc 49). The advantages of PWM are ___________More immune to noiseSynchronization between receiver and transmitter is not requiredBoth a and bNone of the aboveHintThe PWM is immune to noise and the synchronization between receiver and transmitter is not required 50). The digital pulse modulation categorized into __________OneTwoThreeFourHintThe digital pulse modulation categorized into three types they are PCM, delta modulation, and adaptive delta modulationSampling Theory and Pulse Modulation Important MCQs 51). The pulse time modulation categorized into __________OneTwoThreeFourHintThe pulse time modulation categorized into two types they are PWM and PPM 52). The analog pulse modulation categorized into __________OneTwoThreeFourHintThe analog pulse modulation categorized into two types they are PTM and PAM 53). The stratified sampling categorized into __________OneTwoThreeFourHintThe stratified sampling categorized into two types they are proportionate and disproportionate 54). The convenience sampling is ___________SimpleEasyConvenientAll of the aboveHintConvenience sampling is simple, easy, and convenient 55). The cluster sampling categorized into __________OneTwoThreeFourHintThe cluster sampling categorized into three types they are one-stage sampling, two-stage sampling, and multi-stage sampling 56). The two-stage cluster sampling categorized into __________OneTwoThreeFourHintThe two-stage cluster sampling categorized into two types they are simple cluster sampling and probability proportionate to size sampling 57). The quota sampling is _________SimpleEasyConvenientAll of the aboveHintThe quota sampling is simple, easy, and convenient 58). The random sampling is categorized into __________OneTwoThreeFourHintRandom sampling is categorized into two types they are simple random sampling and stratified random sampling 59). How many types of transmission techniques are there?OneTwoThreeFourHintThere are two types of transmission techniques are there they are baseband transmission and modulation transmission 60). In how many ways the AM wave can represent?OneTwoThreeFourHintThe AM wave can represent in a time domain and frequency domain 61). In _________, the modulation takes place at high level modulationHigh-level modulationLow-level modulationBoth a and bNone of the aboveHintIn high-level modulation, the modulation takes place at high-level modulation 62). Which class amplifier is used in high-level modulation?ABCABHintClass C amplifier is used in high-level modulation 63). ___________ modulation is used in high power broadcastHigh-level modulationLow-level modulationBoth a and bNone of the aboveHintHigh-level modulation is used in high power broadcast 64). The low-level modulation used in _________Walkie-talkieTV transmittersIn laboratory equipmentAll of the aboveHintThe low-level modulation used in walkie-talkie, tv transmitters, in laboratory equipments, etc 65). The efficiency is low in _________ modulationHigh-level modulationLow-level modulationBoth a and bNone of the aboveHintThe efficiency is low in low-level modulation compared to high-level modulation 66). The efficiency is high-level modulation is __________HighVery HighLowVery lowHintThe efficiency is high-level modulation is very high 67). The PAM is categorized into ____________OneTwoThreeFourHintThe PAM is categorized into two types they are single polarity PAM and double polarity PAM 68). In PAM __________Both demodulation and modulation is simpleConstruction of receiver and transmitter circuits is easyBoth a and bNone of the aboveHintIn PAM Both demodulation and modulation is simple and the construction of receiver and transmitter circuits is easyRead more about PAM 69). The disadvantages of PAM is ___________Requires large bandwidthNoise is morePower required is lessAll of the aboveHintThe PAM requires large bandwidth, noise is more, and power required is less in PAM 70). The PAM used in __________Ethernet communicationPhoto-biologyBoth a and bNone of the aboveHintThe PAM used in ethernet communication, photo-biology, etc 71).The advantages of PTM are _____________Consumes low powerEfficiency is about 90%Noise interference is lessAll of the aboveHintThe PTM consumes low power, the efficiency is about 90%, and the noise interference is less 72). The disadvantages of PTM are ________Circuit is more complexSystem is expensiveBoth a and bNone of the aboveHintIn PTM the circuit is more complex and the system is expensive 73).The PTM used in __________ amplifiersAudioVideoBoth a and bNone of the aboveHintThe PTM used in audio amplifiers 74). In PPM _____________Noise interference is lessRequires less power compared to PAMBoth a and bNone of the aboveHintIn PPM the noise interference is less and it requires less power compared to PAM 75). The system in PPM is _________ComplexRequires more bandwidthBoth a and bNone of the aboveHintThe system in PPM is complex and requires more bandwidthSampling Theory and Pulse Modulation MCQs for Quiz 76). The pulse position modulation used in ___________Remote controlled carsTelecommunication systemsAir traffic control systemAll of the aboveHintThe pulse position modulation used in remote-controlled cars, telecommunication systems, air traffic control system, etc 77). The pulse code modulation used in ___________TelephonySpace communication systemSatellite communication systemAll of the aboveHintThe pulse code modulation used in telephony, space communication system, satellite communication system, etc 78). The pulse width modulation signal has ___________ voltage levelsOneTwoThreeFourHintThe pulse width modulation signal has two voltage levels 79). The non-sampling errors are categorized into ___________OneTwoThreeFourHintThe non-sampling errors are categorized into three types they are specification errors, ascertainment errors, and tabulation errors 80). The ascertainment errors categorized into ___________OneTwoThreeFourHintThe ascertainment errors categorized into two types they are coverage errors and content errors 81). In _________ modulation, there is no feedback in receiver or transmitterPulseDeltaAdaptive deltaNone of the aboveHintIn pulse modulation, there is no feedback in receiver or transmitter 82). The number of bits used for the sample in PCM is ______48164/8/16HintThe number of bits used for the sample in PCM is 4/8/16 83). The step size in pulse code modulation is _________FixedVariableFixed or variableNone of the aboveHintThe step size in pulse code modulation is fixed or variable 84). The step size in differential pulse code modulation is _________FixedVariableFixed or variableNone of the aboveHintThe step size in differential pulse code modulation is fixed or variable 85). The sampling performed in __________ waysOneTwoThreeFourHintThe sampling performed in two ways they are sampling with replacement and sampling without replacement 86). The natural sampling and flat-top sampling are two types of _______PAMPWMPPMNone of the aboveHintNatural sampling and flat-top sampling are two types of pulse amplitude modulations 87). The advantages of DPCM are ______________Signaling rate is lessBandwidth is lessBoth a and bNone of the aboveHintIn DPCM the signaling rate and bandwidth both are less 88). ____________ are the advantages of DMSignaling rate is lowChannel Bandwidth is lowBoth a and bNone of the aboveHintIn delta modulation both signaling rate and channel bandwidth are low 89). What are the disadvantages of DM?Slope overload presentGranular noise presentBoth a and bNone of the aboveHintThe disadvantages of DM are both slope overload and granular noise is present Read more about Delta Modulation 90). The advantages of adaptive delta modulation are __________Improved SNRReduction in granular noise and slope overloadLow signaling rateAll of the aboveHintImproved SNR, reduction in granular noise and slope overload, low signaling rate are the advantages of adaptive delta modulation 91). ____________ are the two major noise sources in PAM systemsChannel noiseQuantization noiseBoth a and bNone of the aboveHintChannel noise and quantization noise are the two major noise sources in PAM systems 92). ___________ modulation is similar to AMPAMPCMPPMPWMHintPulse amplitude modulation is similar to AM 93). ___________ modulation is similar to FMPAMPCMPPMPWMHintPulse width modulation is similar to FM Read more about Frequency Modulation 94). ___________ modulation is similar to PMPAMPCMPPMPWMHintPulse position modulation is similar to PM 95). The PAM is classified into ____________OneTwoThreeFourHintThe PAM is classified into two types they are natural and flat tope PAM 96). The quantization error is categorized into __________OneTwoThreeFourHintThe quantization error is categorized into two types they are round off error and overload error 97). The distortions present in delta modulation are _________Slope overloadGranular noiseBoth a and bNone of the aboveHintThe distortions present in delta modulation are slope overload distortion and granular noise 98). What is the standard form of PDM?Pulse Delta ModulationPhase Duration ModulationPulse Distortion ModulationNone of the aboveHintThe standard form of PDM is Phase Duration Modulation 99). The sampling methods are of __________ typesOneTwoThreeFourHintThe sampling methods are of three types they are ideal, natural, and flattop samplings 100). __________ modulation is also known as PWMPAMPCMPPMdPDMHintPulse duration modulation is also known as PWM Time is Up!
