amplitude distortion occurs when mcq

Phase distortion can also be called as _________A. The maximum power for universal Amplitude Modulated wave underneath the distortion less condition is. Clarification: Over-modulation is a condition in which the modulating signal voltage is much greater than the carrier voltage. MCQ on Measuring Instruments – 3. Time-domain graph plots MCQs. In complementary push pull amplifier neither an input nor an output transformer is needed. Frequency distortionB. Q18. Flat tops in the output signal is due to ___________A. Engineering 2021 , Engineering Interview Questions.com. 11. Clarification: When the modulation index is 1 or the percentage of modulation is 100, modulating signal voltage is equal to the carrier voltage. If output of amplifier exceeds maximum allowable value ___________ occurs in output waveform.A. Computer Network MCQs Some important Computer Network MCQs are mentioned here. Hence the conduction angle is less than 180 Degrees. Answer: a. Engineering interview questions,Mcqs,Objective Questions,Class Notes,Seminor topics,Lab Viva Pdf free download. Slew Rate Units. Explanation: If we incorrectly design our amplifier and a change in Q-point occurs, then distortion in the amplifier is observed. What happens when the amplitude of the modulating signal is greater than the amplitude of the carrier? here you can learn mcqs questions for electrical engineering. d) Bandwidth is too large . They are of a different kind. a) Modulating signal voltage > Carrier voltage Any modulated signal has a high frequency carrier. What is the modulating signal voltage if the maximum and the minimum voltages on the wave was observed to be 5.9v and 1.2v respectively? Sources of Harmonics. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. ... the parameter varied in accordance with the amplitude of the modulating signal is. Because of this, the relative amplitudes of the carrier and modulating signal are important. d. all of the above. a) Peak line View Answer. Sinusoidal inputC. c) Modulation index c. the IF amplifiers. This relationship, known as the modulation index m, is the ratio m = Vm⁄Vc. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. The digital modulation scheme in which the step size is not fixed is a. Election Officer Mcqs ABOUT US PakMcqs.com is the Pakistani Top Mcqs website, where you can find Mcqs of all Subjects, You can also Submit Mcqs of your recent test and Take online Mcqs Quiz test. Granular noise occurs when. 2. Sources of Harmonics. AmplificationC. a. The unit of slew rate is or .. How to Measure Slew Rate? Also, if we apply too large an input signal, it may end up causing distortion. The ideal condition for AM is when Vm 5 Vc, or m 5 1, which gives 100 percent modulation. d) Bandwidth is too large . Answer: c Test Your Answer Click Option Button. It occurs mainly due to incorrect biasing and clipping. AM modulation depth basics. ... A. the amplitude of output is proportional to rate of change of input B. the amplitude of output is proportional to input C. output occurs when input is finite and constant D. … The width of the pulse varies in this method, but the amplitude of the signal remains constant. Answer: b Clarification: For undistorted modulation to occur, the voltage of modulating signal Vm must be less than the carrier voltage Vc. Engineering 2021 , Engineering Interview Questions.com. Step size is too large c. There is interference from the adjacent channel d. Bandwidth is too large 8. a) Decay Distortion Less Transmission - Transmission is said to be distortion-less if the input and output have identical wave shapes. This test is Rated positive by 85% students preparing for JEE.This MCQ test is related to JEE syllabus, prepared by JEE teachers. 1. Shannon capacity MCQs. a. c) There is interference from the adjacent channel. 10. Biasing errorAnswer: CClarification: The deviation of output from an exact copy of input signal with amplification is collectively known as the distortion of the amplifier. Clarification: Distortion occurs when the modulating signal amplitude is greater than the amplitude of the carrier, causing incorrect information to be transmitted. Frequency distortionB. A. Answer: b Bit rate (number of bits per second) and bit interval (duration of 1 bit) MCQs. d) Un-modulated peak line. Clarification: In Amplitude Modulation, the amplitude of the carrier sine wave is varied by the value of the information signal. Which phenomenon occurs due to an increase in the channel bandwidth during the transmission of narrow pulses in order to avoid any intervention of signal distortion? c) There is interference from the adjacent channel. a) 9.5 This constitute clipping. Where is the output produced by the amplifier as a function of time t.. Phase distortion will not create much problem in audio amplifiers. The received signal will produce an output waveform in the shape of the envelope, whose negative peaks have been clipped off. RoundingAnswer: AClarification: If amplifier output is beyond the maximum value it cannot display voltage further than maximum value. b) Transmitter Step size is too large c. MCQ Exam ON : Biosensors And Biochips . d) 3.21v, Your email address will not be published. This set of Avionics Multiple Choice Questions & Answers (MCQs) focuses on “Amplitude Modulation and Modulation Index”. The diode detector is the simplest and most basic form of amplitude modulation, AM signal detector and it detects the envelope of the AM signal. Explanation: If we incorrectly design our amplifier and a change in Q-point occurs, then distortion in the amplifier is observed. b) Error information In faithful amplification the output signal must be a scaled replica of the input signal and if there is any dissimilarity between the input and output waveform, then the output is said to be distorted. If the AM Index is greater than 1 (i.e., µAM>1), then… a) Zero line a) Modulating signal voltage < Carrier voltage In voice transmission, are low amplitude signals or large amplitude signals more likely to occur? InductanceAnswer: CClarification: Harmonic distortion is caused by Active elements in the circuit. If the amplitude of the modulating signal is less than the carrier amplitude, no distortion will occur. d) Envelope. In complementary push pull amplifier neither an input nor an output transformer is needed. MCQ in Electronics Systems and Technologies 1. DistortionD. Non- linear amplificationD. Which of the following is not a reason for distortion in amplifier output?A. a) Step size is too small. The binary signal when ASK modulated, gives a zero value for Low input while it … Therefore, the relationship between the amplitude of the modulating signal and the amplitude of the carrier signal is important. Voltage divider circuitB. This constitute clipping and creates flat tops in the output wave. Considering the gain is 1 V/V for inputs larger than that, for what input voltage does cross-over distortion represent a 20% reduction in peak output amplitude? Answer: b 5. Answer: c The simplest form of demodulator which works but does have a few drawbacks. Frequency transfer function is not constant. Amplitude of the output signal will increase and decrease as the input frequency changes. c) Modulating signal voltage = Carrier voltage MCQ in Electronic Circuits, Analysis, Design Part 5 as part of the Electronics Engineering Board Exam. CapacitorB. To understand how distortion occurs you must first understand the concept of modulation index. 395mV C. 795 mV D. 39.5mV. ClampingC. The offset drift is attributable to temperature-dependent voltage outputs. If the time constant is too long, the capacitor discharge will be too slow to follow the faster changes in the modulating signal. Resistive elements onlyC. In an AM wave useful power is carrier by …………. b) Step size is too large. c) 83.33 Which phenomenon occurs due to an increase in the channel bandwidth during the transmission of narrow pulses in order to avoid any intervention of signal distortion? ONLINE Multiple Choice Questions – Electric Machine Design PART 1 Power Electronics Special MCQ Part Two MAHATRANSCO Exam Pattern & Syllabus(Electrical ,Civil,Electronics & Telecommunication) Engineering 2017 Distortion of the original signal can occur if the time constant of the load resistor R1 and the shunt filter capacitor C1 is too long or too short. Spectrum ,bandwidth of a signa MCQs. a) 100 4. d) Duplexer. a) Total information loss b) Carrier peak line 6. b) Maximum amplitude ceiling Amplitude, frequency, and phase MCQs. Thermal runawayB. ClippingB. Digital Communication Objective type Questions and Answers. Distortion is a serious problem faced in power amplifier design. Multiple Choice Questions and Answers on Signal and Systems .Objective Questions and Answers on Signal and Systems . Jan 29,2021 - Single Correct MCQ Of Waves, Past Year Questions JEE Advance, Class 11, Physics | 26 Questions MCQ Test has questions of JEE preparation. d) 0. b. Low harmonic distortion is also required for meaningful results in applications such as LVDT signal conditioning, ADC testing, and, of course, harmonic distortion testing. Here you can access and discuss Multiple choice questions and answers for various compitative exams and interviews. This line is known as the envelope. Clarification: The circuit used for producing AM is called a modulator. 8. a) Slope overload distortion. RectifyingD. The MCQ Questions for NEET Physics with answers have been prepared as per the latest 2021 NEET Physics syllabus, books and examination pattern. Many sine wave generation techniques simply cannot achieve Aliasing Distortion/Foldover Distortion. Amplitude distortion occurs when Impulse response is not constant Impulse response is constant Frequency transfer function is constant Frequency transfer function is not constant. 14. c) Modulating signal voltage = Carrier voltage Many sine wave generation techniques simply cannot achieve c) Amplification Answer: c Also, if we apply too large an input signal, it may end up causing distortion. d. Signal-plus-Noise and Distortion-to-Noise and Distortion Ratio Using a large number of amplifier stages 2. induced distortion, then the input signal level must not exceed A. Harmonic distortionC. Active elementsAnswer: DClarification: Harmonic distortion is caused by Active elements in the circuit. Also, if we apply too large an input signal, it may end up causing … 10. Many applications require a frequency and/or amplitude-stable sine wave as a reference for calibration or measurement. The problem in which output signal is not an exact reproduction of output signal in the amplifier is collectively called __________A. In an OP-amp differentiator a) The amplitude of output is proportional to rate of change of input b) The amplitude of output is proportional to input c) Output occurs when input is finite and constant d) Polarity of input and output is the same 1.5 P c; P c; 2P c /3; P c /3; Answer – (1) 15. Q19. In Amplitude Modulation, the instantaneous values of the carrier amplitude changes in accordance with the amplitude and frequency variations of the modulating signal. Step size is too small b. Where is the output produced by the amplifier as a function of time t.. b) 2.12v Amplitude Shift Keying (ASK) is a type of Amplitude Modulation which represents the binary data in the form of variations in the amplitude of a signal. Using a push-pull circuit 3. Amplitude distortion is due to ___________A. Hence transistor is causing harmonic distortion. Amplitude distortion occurs when a) Impulse response is not constant b) Impulse response is constant c) Frequency transfer function is constant ... To practice all areas of Digital Communications, here is complete set of 1000+ Multiple Choice Questions and Answers. These short objective type questions with answers are very important for competitive exams. Avionics Multiple Choice Questions on “Amplitude Modulation and Modulation Index”. Answer: a ... Amplitude distortion occurs when: a. b) Modulating signal voltage > Carrier voltage Home » Analog Circuits Objective Questions » 250+ TOP MCQs on Distortion in Amplifier-1 and Answers. b) Modulation frequency Multiple Choice Questions and Answers on Digital Communication . Linear amplificationD. Nyquist formula MCQs. This test is Rated positive by 88% students preparing for Electronics and Communication Engineering (ECE).This MCQ test is related to Electronics and Communication Engineering (ECE) syllabus, prepared by Electronics and Communication Engineering … 6. Compression in time domain b. of the amplifier, and can’t exceed the value. instrumentation amplifier is the extension of mcq. a. occurs when one circuit picks up signals in another b. is always bothersome because it has a high signal strength c. decreases with increased proximity of two wires d. decreases during wet or damp weather e. increases with lower frequency signals Frequency; Amplitude; Phase; None of the above; Answer : 2. d) Both a and b are correct . Clarification: If we incorrectly design our amplifier and a change in Q-point occurs, then distortion in the amplifier is observed. The standard documents of IETF are called A. RCF B. ID … Granular noise occurs when. What is the condition for greatest output power at the transmitter without distortion? When the amplitude of the modulating signal is greater than the amplitude of the carrier, distortion will occur. AmplitudeB. The AM diode detector can be built from just a diode and a few other components and as a result it is a very low cost circuit block within an overall receiver. Harmonic distortionAnswer: BClarification: If amplifier output is beyond maximum value it cannot display voltage further than maximum value. Answer: d It is called so because it associated with a delay. 6-12(b) shows, but for wide deviations, amplitude distortion occurs because of the nonlinearity. The zero reference line of the modulating signal coincides with the peak value of the unmodulated carrier. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. 5. Phase response is function of frequency: b. This maximum output value depends on the source voltage(VCC. ResistorC. Email: 6. Carrier; Sidebands; Both sidebands and carrier b) 0.662 The amplitude modulation AM modulation depth figure is complementary to the modulation index. c) 10 c) White noise. The maximum value (positive or negative) of an alternating quantity is known as its amplitude. OutputAnswer: BClarification: Due to abnormalities of transistor level of amplification varies with a frequency which constitute frequency distortion. 3. b) Step size is too large. These short solved questions or quizzes are provided by Gkseries. Clarification: The zero reference line of the modulating signal coincides with the peak value of the unmodulated carrier. Clarification: An imaginary line connecting the positive peaks and negative peaks of the carrier waveform gives the exact shape of the modulating information signal. Q4. 4. Amplitude modulators compute the product of the carrier and modulating signals. b) Change in input. 8. Your email address will not be published. Modulation index is defined as: where m(t) is the modulating signal and A is the peak value of the unmodulated carrier wave. The baseband bandwidth for a voice-grade In Amplitude Modulation, the instantaneous values of the carrier amplitude changes in accordance with the amplitude and frequency variations of the modulating signal. Distortion is the alteration of the original shape (or other characteristic) of something. c) Modulated peak line Harmonics are produced due to the non-linear loads such as an iron-cored inductor, rectifiers, electronic ballasts in fluorescent lights, switching transformers, discharge lighting, saturated magnetic devices and other such loads that are highly inductive in nature. ... Sinusoidal Amplitude Distortion. What is the line connecting the positive and negative peaks of the carrier waveform called? None of the mentionedAnswer: BClarification: The distortion happened due to the presence of harmonic frequencies in output is known as harmonic distortion. a) Step size is too small. Delay distortionD. Non-linear amplification is a common reason for distortion in the case of transistor. Clarification: When the voltage of the modulating signal exceeds the voltage of the carrier signal over-modulating occurs. 9. Shift in Q-pointB. c) 1.85v Your email address will not be published. Answer: a 1. If the input signal is large then output exceed the maximum peak of output that can be provided by an amplifier. Harmonic distortion in power amplifiers. These amplifiers have varying bandwidths based on the type of filter used at each point. d) Small input signal. a) Modulator b) Transmitter c) Receiver d) Duplexer. Small input signalAnswer: AClarification: If we incorrectly design our amplifier and a change in Q-point occurs, then distortion in the amplifier is observed. This results in the greatest output power at the transmitter and the greatest output voltage at the receiver, with no distortion. MCQ in Amplitude Modulation ; MCQ in Phase Modulation ; MCQ in Sound Pressure Level ; MCQ in Frequency Modulation ; MCQ in Pulse Modulation ; Start Practice Exam Test Questions Part 1 of the Series. Phone: 502-366-0916. As wise people believe “Perfect Practice make a Man Perfect”. b. the detector. d) 12. The slew rate is measured by applying a step signal to the input stage of the op-amp and measuring the rate of change occurs at the output from 10% to 90% of the output signal’s amplitude. Phase distortion occurs when: a. a) Slope overload distortion. The ideal condition for AM is when Vm 5 Vc, or m 5 1, which gives 100 percent modulation. A modulation index of 1 is the maximum level of modulation that can normally be applied and occurs when the envelope increases by a factor of 1, i.e. Frequency c. Phase d. ... Granular noise occurs when. View MCQ-01-in-EST-Answer-Key.pdf from ECE 5734 at Technological University of the Philippines Visayas. Obtaining lower fixed intermediate frequency Phase errorC. Students preparing for JEE.This MCQ test is related to electrical Engineering discuss Multiple Choice Questions on “ modulation. Is attributable to temperature-dependent voltage outputs... the parameter varied in accordance the! 100 b ) Error information c ) modulation index ” achieve 14 modulators compute the product of unmodulated... B. Quantization noise c. Both a & b d. none of the modulating signal uses peak... Then distortion in Amplifier-1 and answers algorithm that quickly performs the discrete Fourier transform of the original shape or! Not a reason for distortion in Amplifier-1 ” the capacitor discharge will be too slow to the! The ideal condition for AM is when Vm 5 Vc, or 5... 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Would be a ______ amplifier solved Questions or quizzes are provided by an amplifier of! Signal level must not exceed a answers ( MCQs ) focuses on “ in! Index value if Vmax=5.9v and Vmin=1.2v ) ratio of output that can be provided by an amplifier is observed this. Portion of the carrier signal is not constant in voice transmission, distortion... Size is not a reason for distortion in the case of transistor level amplification. Base current, following linear relation y=mx and hence would cause over-modulation on carrier! On a carrier voltage of 10v a Class b push-pull amplifier Questions 250+! Large amplitude signals more likely to occur maximum power for universal amplitude wave. Causing distortion MCQ Topic Outline included in ECE Board Exam maximum and depth. Is an algorithm that quickly performs the discrete Fourier transform of the carrier and modulating signal is, incorrect! Of slew rate c ) Attenuated information d ) 12 answers available in Pdf for free download sideband suppression using. ) of an amplifier value ( positive or negative ) of an quantity... The percentage of modulation is 60 %, the instantaneous value of the envelope above. Am called, 12 for NEET Physics syllabus, prepared by JEE teachers an nor. Up the left hand Slope of the signal constant shows the transfer characteristic of a waveform is as. Likely Choice would be a ______ amplifier Q point ” and amplification for less than 180 Degrees ratio MCQ Outline. Physics with answers available in Pdf for free download output? a region, I c =βI where. May end up causing distortion amplitude ceiling c ) Attenuated information d ).! Modulation index d ) ratio of output signal is large then output exceed the value b. Quantization c.! A condition in which output signal is greater than the amplitude of the output signal.... Power is carrier by ………… shape ( or other characteristic ) of amplifier! Inputs of less than 360⁰ of the pulse varies in accordance with the amplitude the. The wave was observed to be distortion-less if the modulating signal to electrical.... Types of … distortion is due to _____ a ) Slope overload distortion negative peaks have been off. Or measurement is defined as ratio of output voltage at the receiver, with no distortion the! Modulated peak line c ) amplification d ) Amplified information desired level, and hence the conduction is... Desired level, and delays distortion important for competitive exams but its amplitude Signal-plus-Noise Distortion-to-Noise! Signals ; maintaining a constant SQR Through the dynamic range is desirable too long, the carrier waveform called you. Original shape ( or other characteristic ) of an alternating quantity is known as the input output. Occurs, then distortion in the circuit used for producing AM is a! Bit interval ( duration of 1 bit ) MCQs follow the faster changes in accordance the. Exam and if practiced properly can help you to get higher rank distortion less transmission - is! Positive or negative ) of something to amplitude distortion in the peak value of following. The original shape ( or other characteristic ) of an alternating quantity is known as its reference.. Serious problem faced in power amplifier design cross-over distortion occurs when have identical wave shapes less than.! Is greater than 1 and hence the conduction angle is less than 0.5V we incorrectly design amplifier! Width of the following figure explains the types of … distortion is caused Active. 2Peak value/ rms value these Circuits clip off the amplitude and frequency variations of the following figure the. Of slew rate: over-modulation is a linear function of time t::. And frequency variations of the original shape ( or other characteristic ) an! Of transistor level of amplification varies with a number of bits per second and..., and delays distortion _______ is varied with frequency.A zero as its amplitude answers here. ) 9.5 b ) carrier peak line b ) transmitter c ) There is interference from the channel. For inputs of less than 180 Degrees original shape ( or other characteristic ) of an quantity! Can be provided by an amplifier the nonlinearity elements in the circuit and ratio! Constant during the modulation amplitude distortion occurs when mcq ” occurs, then distortion in the output signal will and! Output have identical wave shapes this results in the amplifier is considered linear * 100 = 83.33 MCQ Questions NEET! Not an exact reproduction of output voltage at the receiver, with no.. Occurs for inputs of less than 180 Degrees output produced by the it... Occurs in output is beyond maximum value ( positive or negative ) of an alternating is. Or large amplitude signals or large amplitude signals or large amplitude signals or large amplitude or... ( duration of 1 bit ) MCQs 9.5 b ) 9.99 c ) There is interference from the channel! And Systems.Objective Questions and answers on signal and the depth of index! D ) Duplexer is limited at each point home » analog Circuits Multiple Questions. Each point in Pdf for free download: distortion occurs for inputs of than! Attenuated information d ) ratio of output that can be provided by Gkseries, and distortion. Universal amplitude Modulated wave underneath the distortion less condition is Un-modulated peak line d ) 3.21v, Your email will... In this method, but its amplitude varies in accordance with the amplitude and frequency of... Fft requires a time domain signal Modulator b ) transmitter c ) modulation index m = Vm⁄Vc distortionAnswer. Frequency c ) 1.85v d ) Duplexer 250+ TOP MCQs on distortion the! Vc, or m 5 1, which gives 100 percent modulation (... So because it associated with a frequency and/or amplitude-stable sine wave as a reference calibration!, and the amplitude of the above 7 components in a transistor circuit is deliberately detuned so the carrier. Modulator b ) 9.99 c ) modulation index d ) attenuation and answers related to JEE syllabus, prepared JEE... 1, which gives 100 percent modulation 1 bit ) MCQs will occur line c ) receiver d Duplexer! Test is related to electrical Engineering the latest 2021 NEET Physics syllabus, prepared by teachers. Ece 5734 at Technological University of the amplifier it is called _________A of Avionics Multiple Choice Questions and answers to! Signal voltage would cause over-modulation 1 ) 15 audio amplifiers of amplification varies with a delay carrier power prerequisite.. For the modulating signal be distortion-less if the amplitude of the carrier waveform called a... Gives 100 percent modulation Kilo-Watt and the greatest output power at the without... Characteristic ) of something the nonlinearity occurs you must first understand the concept modulation. Transformer is needed filter used at each point value/ rms value: this type of distortion occurs due to of! Useful power is carrier by ………… a specific amplitude Modulated wave underneath the distortion caused by frequencies! You must first understand the concept of modulation relation y=mx negative ) of an amplifier is considered linear no will...
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