c. None of the above. When two beams from a single laser overlap, they interfere with each other, producing an . For example: void foo (int *array,int *size,int *value) { for (int i=0;i<*size;++i) { array [i] = 2 * *value; } } Looking at this code you might expect that the compiler could load *value once outside the loop and then set every element in the array to . Ideal for students preparing for semester exams, GATE, IES, PSUs, NET . b. transverse. Under these conditions, aliasing can be exploited to study the topography of the photoreceptor mosaic in the living human eye (Williams, 1988). Nothing changes in graphical way. Imaging condition aliasing introduced by Zhang et al. Recently, I went back to class and since I am a student, exams are mandatory. The aliasing effect is the appearance of jagged edges or "jaggies" in a rasterized image (an image rendered using pixels). No use. Anonymous JnvCyu85. 3. DFT stands as: a. . aliasing of the image-space. High pass C. Bandpass D. All-pass Show Explanation 5. The first order control system, which is is well designed, has a a. small bandwidth B. negative time constant Biomedical Instrumentation Questions and Answers for Experienced people on "General Considerations for Signal Conditioners". I'll look into it. MCQ Questions for CBSE Class 3 Maths With Answers will help students to practice multiple choice questions of respective subjects. Aliasing affects performance by preventing the compiler from doing certain optimizations. Electrical Engineering MCQ questions and answers especially for the Electrical Engineer and who preparing for GATE Exam. Condition for aliasing problem: a) fs<fm b) fs<2fm c)fs=fm d) all of these 8. Aliasing occurs when a system is measured at an insufficient sampling rate. 1 of 4 sets 1. 250+ TOP MCQs on Data Conversion - 2 and Answers ; 250+ TOP MCQs on IIR Filter Design by Impulse Invariance & Answers ; 250+ TOP MCQs on Spectrum Analysis of Sampling Process and Answers ; 250+ TOP MCQs on Frequency Transformations in the Digital Domain & Answers 1. All rim conditions are 1 c. Values of each decision variable is either 0 or 1 d. All of the above. ( Source) What is aliasing? The problem of jagged edges technically occurs due to distortion of the image when scan conversion is done with sampling at a low frequency, which is also known as Undersampling. 2.2 and 2.3, . DTFT is the representation of a. Answer Explanation. True. Sampling can solve such a problem by taking samples at the fixed time interval as shown in Figs. a) band reject filter b) band stop filter c) notch filter d) all reject filter Answer: c They are straight to the point and even better considering the terrible writing by students. a) Pixel sampling and super sampling. The Nyquist theorem states that the sampling rate should be more than twice the frequency of the original signal to avoid aliasing. I use lightweight pipeline but i opened up new project without pipeline and had the same problem. (2001) occurs when the image space is inappropriately dis-cretized. The solution is to use a high enough sampling rate, or if this is not possible, to use an anti-aliasing filter in front of the analog-to-digital converter (ADC) to eliminate the high frequency components before they get into the data acquisition system. Multiple Choice Questions and Answers on Digital Signal Processing(Part-1) siva. Ira Minocha. Digital Signal Processing. none of above 32. Moreover, alias-ing complicates most data flow analysis problems, and the absence of alias information can prevent many opti-mization. Recently purchased a new 27" 1440p 144hz g-sync monitor so im just wondering if it's worth the performance hit turning on any kind of AA. If that alignment is not 32 Bytes, the 256-bit loads will cross cache line boundaries and cause the 4KiB aliasing problem to get worse. B. Problem: Given , that has a sampling frequency of 5Hz. A. 1, 2 and 3 are correct. Find the transfer function of the IIR digital filter. Imaging condition aliasing, as discussed by Zhang et al. B. Answer. A clear un- It also often refers to the distortion or artifact that results when a signal reconstructed from samples is different from the original continuous signal. The mapping z-1 → g (z-1) must be __________ A. mcq-on-digital-signal-processing. 4-1 Sampling an AM signal Solution two-sided spectrum periodic minimum sampling rate . Flood fill algorithm. We address an aliasing problem that arises when . this would give rise to aliasing. Anonymous JnvCyu85. Multiplexing & De-multiplexing Module 01 1.All electromagnetic waves travel through a vacuum at a. the same speed. If the disk began rotating at one revolution per minute, you could observe the angular velocity by looking at it. Answer: b Q7. It varies depending on the game. Aliasing is an unwanted case of sampling, where the minimum condition for accurate sampling is not met. In this case, neither loads nor stores will cross cache line . c) Sampling. aliasing of the image-space. wc decreases c. Sharing a single processor among a number of signals by time sharing d. This is how my Team fortress 2 is looking on highest settings with anti-aliasing settings on max. Multiple choice - MCQ tests are good for saving an examiner the time. I am using a planar scanner to sample the near field with. Digital Signal Processing. . Periodic Discrete time signals b. Aperiodic Discrete time signals c. Aperiodic continuous signals d. Under these conditions, aliasing can be exploited to study the topography of the photoreceptor mosaic in the living human eye (Williams, 1988). A : Attenuation of high frequency spectral replicates. None of these. A. This overlapping is known as aliasing. 1 and 2 are correct. Undersampling and Aliasing • When we sample at a rate which is less than the Nyquist rate, we say we are undersampling and aliasing will yield misleading results. Concept wise test for CBSE Class 3 Maths . Imagine a disk (or paper plate) with a dot near the edge. • If we are sampling a 100 Hz signal, the Nyquist rate is 200 samples/second => x(t)=cos(2π(100)t+π/3) • If we sample at .4 times the Nyquist rate, then f s = 80 s/sec Undersampling and Aliasing • When we sample at a rate which is less than the Nyquist rate, we say we are undersampling and aliasing will yield misleading results. Question 20 answers Mar 16, 2022 Hello I am trying to reconstruct the far field pattern of a patch antenna at 28 GHz (lambda = 10.71 mm ). The process of reducing aliasing is called. mcq-on-digital-signal-processing. MCQ for DSP. This is game view and it's the same in scene view. Aliasing of Signals - Identity theft in the frequency Or in mathematical terms: f s 2 c (1) where f s is the sampling frequency (ho w often samples are tak en per unit of time or space), and f c is the Sampling . Value may be determined at any point c. Repeats itself at regular intervals d. All of the above ANSWER: (d) All of the above 2) Sine wave is a a. We consider two approaches to control the aliasing problems associated with the acqui-sition and subsampling situations mentioned above. Not necessarily as much as 1080p. The process of reducing aliasing is called. (d) The resources employed for highly valued uses. b) Anti aliasing. True B. At ElectronicsPost.com I pursue my love for teaching. Aliasing refers to _____ a) Sampling of signals less than at Nyquist rate b) Sampling of signals at Nyquist rate c) Sampling of signals greater than at Nyquist rate (c) The resources employe are the best. In this section of Operating System Process Synchronization.it contain Operating System Process Synchronization - The Critical-Section Problem MCQs (Multiple Choice Questions Answers).All the MCQs (Multiple Choice Question Answers) requires in detail reading of Operating System subject as the hardness level of MCQs have been kept to . b) Anti aliasing. forms of signal conditioning. In the codelens example below, you can see that a and b refer to the same list after executing the assignment statement b = a. It is perhaps best explained through example. . 76. 28. Answer: a. Q6. The filter used to reject the 50Hz noise picked up from power lines or machinery is called? This falsely estimated signal will be indistinguishable from (i.e., be an "alias" to) another signal having that true lower frequency. a) Resolution. Understanding FFTs and Windowing - NI They are aliases of each other set of 1000+ Multiple Choice Questions focuses on aliasing! SELECT B. • If we are sampling a 100 Hz signal, the Nyquist rate is 200 samples/second => x(t)=cos(2π(100)t+π/3) • If we sample at .4 times the Nyquist rate, then f s = 80 s/sec Explanation: Interpolator corrects the sampling time problem using discrete time processing. Thus there is an overlap in the shifted replicas of the x (ω) signal. Case 1. when σ <0, it would translate that r is the reciprocal of 'e' raised to a constant. a. Electrical Engineering MCQ questions and answers for an engineering student to practice, GATE exam, interview, competitive examination and entrance exam. Changes made with one alias affect the other. If a signal is not sampled using enough data points, its true frequency will be underestimated. Aliasing refers to the incorrect measurement of a signal's frequency due to an inadequate digital sampling rate. (a) Goods and services are produced without resources being wasted. Define aliasing or folding. If we are using an N-point DFT to compute the signal spectrum with a resolution less than or equal to 25Hz. JulietJuly 4, 2018 Opinion. Multiple Choice Questions and Answers By Sasmita December 24, 2017 1) A periodic signal is a. Sampling and Aliasing - Problems with selected Solutions 171. Multiple Choice Questions- MCQ. Anti-aliasing filters are commonly used at the input of the digital signal processing system's analog-to-digital converter. i. e. f s ≥ 2 f m. Proof: Consider a continuous time signal x (t). 4) More reliability. TO AVOID ALIASING The simple technique to avoid aliasing of course is to always have enough samples to capture the spatial or temporal variation in a signal. Two basic technique for anti aliasing in ray tracing algorithm are. Multiple Choice Questions and Answers on Digital Signal Processing(Part-1) siva. c) Sampling. I am an M.Tech in Electronics & Telecommunication Engineering. Answer: A. Clarification: As in the analog domain, frequency transformations can be performed on a digital low pass filter to convert it to either a band pass, band stop or high pass filter. I installed my previous drivers, but that didn't help. It establishes a sufficient condition for a sample rate that permits a discrete sequence of samples to capture all the information from a continuous-time signal of . 2) Flexibility in the system design. Look at the edges and you will see the problem.There is no fix. DFT stands as: a. . It does appear possible to fix the source. (APRIL/MAY 2011) (NOV/DEC-2010) The superimposition of high frequency behaviour on to the low frequency behaviour is referred as aliasing. If a signal is not sampled using enough data points, its true frequency will be underestimated. Less than. Forcing anti aliasing from nvidia control panel will make the edges look even worse, so it's . Imaging condition aliasing introduced by Zhang et al. Aliasing errors are hard to detect and almost impossible to remove using software. Low pass B. Anti-Aliasing Filter: An anti-aliasing filter (AAF) is a filter used before a signal sampler to restrict the bandwidth of a signal. Answer: a. Q6. Condition for aliasing problem a. fs<fm b.fs<2fm c. fs=fm d. all of these 4. this would give rise to aliasing. . It blocks the higher frequency contents in a signal to restrict it to a maximum frequency. b) Anti aliasing. 4-2 Reconstruction via realizable D-to-C Solution pulse shape rectangular triangle sample and hold 4-3 . Problem: Given , that has a sampling frequency of 5Hz. Statement: A continuous time signal can be represented in its samples and can be recovered back when sampling frequency f s is greater than or equal to the twice the highest frequency component of message signal. We address an aliasing problem that arises when, during the application of the imaging condition, wavenumbers improperly map into the image-space due to sampling changes of the data axes. c) Both a & b. d) None of these. c. speeds that are inversely proportional to their frequency. When two beams from a single laser overlap, they interfere with each other, producing an . I have tried forcing anti-aliasing through Nvidia control panel and nHancer. PROJECT C. JOIN D. PRODUCT Correct Answer: C QUIZ ~ 10. The Nyquist-Shannon sampling theorem is a theorem in the field of signal processing which serves as a fundamental bridge between continuous-time signals and discrete-time signals. Answer: (a) 4. Two basic technique for anti aliasing in ray tracing algorithm are. Which of the following operation has to be performed to increase the sampling rate by an integer factor I? The spectrum of x (t) is a band . It will be very helpful for those students who are willing to get good marks in their academics. for a wrong answer on multiple choice questions! Please draw a circle around the option(s) to indicate your answer. Both a & b. Activity: 10.11.1 ActiveCode (listalias1) In this case, the reference diagram looks like this: Because the same list has two different names, a and b, we say that it is aliased. A. It seems that anti-aliasing is nonexistent in my projects, both in scene view and game view. What you are seeing is different -- it is a 4KiB aliasing problem, but you have requested that the compiler generate 512-bit (64 Byte) operations. by T-Code Scripts 30. The following list offers common signal conditioning types, their functionalities, and examples of when you need them to help you assess your signal conditioning options. On the unit circle C. Inside the unit circle D. None of the mentioned Show Explanation 3. If the pixel is already filled with desired color then leaves it otherwise fills it. Set 10 - Analog Communication Test Questions. Activity: 10.11.1 ActiveCode (listalias1) In this case, the reference diagram looks like this: Because the same list has two different names, a and b, we say that it is aliased. aliasing will arise with this degree of subsampling. A. In signal processing and related disciplines, aliasing is an effect that causes different signals to become indistinguishable (or aliases of one another) when sampled. As compared to the analog systems, the digital processing of signals allow. This effect is also referred as folding. For answers with multiple answers, 2 points will only be awarded if all correct choices are selected, otherwise, it is wrong and will incur a 1 point penalty. I tried all driver versions from 260.89 to the newest 285.79. Find the transfer function of the IIR digital filter. Digital processing needs A/D and D/A converters and associated reconstruction filters b. View Answerr. 4.17-18 in H&B • Display is discrete and world is continuous (at least at the level we perceive) • Sampling: Convert continuous to discrete • Reconstruction: Converting from discrete to continuous • Aliasing: Artifacts arising from sampling and consequent loss of information Aliasing is an effect that causes different signals to become indistinguishable from each other during sampling. MCQ for DSP. What is the condition for avoid the aliasing effect? B : Non uniform spectral gain applied to desired baseband spectrum. Explanation: P T =P C (1+ u2 ⁄ 2), according to the problem P C = 800W and m = 0.5. DROP C. ALTER D. DELETE Correct Answer: C QUIZ ~ 9 A data manipulation command the combines the records from one or more tables is called A. Posts: 7. ANSWER: B, D, A, C. Explanation: No explanation is available for this question! RELATED MCQ ON DIGITAL COMMUNICATION MCQS Electronics & Electrical MCQs The value of the probability density function of random variable is b. 1. this is called. Sampling and Aliasing • Sects. 1) Programmable operations. b) Adaptive sampling and super sampling Answer Aliasing is a signal processing term. On substituting values in the equation we get P T =800(1+ 0.52 ⁄ 2) = 900W. This falsely estimated signal will be indistinguishable from (i.e., be an "alias" to) another signal having that true lower frequency.
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