Dsp exam questions and answers pdf

You don't have to be terrified. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and its partners. I agree to Money's Terms of Use and Privacy Notice ...

Exercise : Digital Signal Processing - General Questions. Digital Signal Processing - General Questions. Digital Signal Processing - True or False. Digital Signal Processing - Filling the Blanks. 1. In a flash analog-to-digital converter, the output of each comparator is connected to an input of a ________. decoder. View PDF. 1 Gate problems in DSP Abstract : These problems have been selected from GATE question papers and can be used for conducting tutorials in courses related to the course Digital Signal Processing in practice. 1) If the impulse response of a discrete-time system is h [n] = −5n u [−n − 1],then the system function H (z) is equal to ...CPIM-DSP Test Features. CPIM-DSP Practice Exam and PDF; Construction and Industry CPIM-DSP Practice Test on Request; CPIM-DSP Free Sample Download; 24/7 Live Chat Customer Support (Technical and Sales) Excel Your Career ProspectsWith Effective Preparation Of The CPIM-DSP ExamThe best way to prepare for your on-site interview is to consider how you’ve demonstrated key success traits in your previous professional experience. Our interviews are rooted in behavioral-based questions which ask about past situations you’ve faced and how you handled them. Have specific examples that showcase your expertise, and ...Jul 25, 2021 ... Find the magnitude and phase responses for the system characterized by the difference equation. 71. Find the impulse response, frequency ...Schizophrenia can be a challenging condition to navigate, but with knowledge, both loved ones and those living with schizophrenia can feel empowered to manage challenges. Learning ...The Delta Sigma Pi Leadership Foundation is the charitable giving arm of the Fraternity. It is a registered 501(c)(3) charitable organization, gifts and donations are tax deductible to the extent allowable by law. The mission of the Leadership Foundation is to financially support educational and charitable programs that enable members of Delta ...

Student Resource Guide, Year 1. The Department of Developmental Services (DDS) and the California Department of Education (CDE) would like to extend their appreciation to the many people and organizations throughout the state of California and across the nation who contributed their time and expertise to the initial development and revisions of ...If you wish to pursue a career in DSP, knowing how to answer commonly asked questions can help you appear confident and increase your chances of receiving …Past exam papers: Digital Signal Processing. Solution notes are available for many past questions to local users. They were produced by question setters, primarily for the …Histogram of Scores for Exam 1: E1Hist_Off.pdf; E1Hist_On.pdf Fall 2001 Exams plus Solutions Final Exam from Fall 2001: pdf. Exam #3 from Fall 2001: pdf ps, Solution: pdf. Exam #2 from Fall 2001: pdf ps, Solution: pdf Exam #1 from Fall 2001: pdf ps, Solution: pdf Fall 2000 Exams plus Solutions Final Exam from Fall 2000: pdfArleen Arleen is 33 years old and she has been diagnosed with a moderate level of intellectual disability, a seizure disorder, and recurrent episodes of depression. She currently takes generic forms of Tegretol and Prozac. She normally enjoys movies, walking for exercise, socializing with friends, and dining out. She identifies as a practicing Roman Catholic. […]UPPSC-UP Agriculture Service Preliminary Exam PDF eBook Chandresh Agrawal,nandini books.2023-02-12 SGN.The UPPSC-UP Agriculture Service Preliminary Exam PDF eBook Covers Agriculture Subject Objective Questions From Various Competitive Exams With Answers. General Studies (15,000) Questions By G. K. Puri,Puri Gopal K.2003 For Civil Services (I.A ...

Past exam papers: Digital Signal Processing. Solution notes are available for many past questions to local users. They were produced by question setters, primarily for the …Answer: A) Hyper Text Markup Language. 4- What is the full form of PDF? Answer: A) Portable Document Format. 5- Which command is used to print the working directory in Linux? Answer: B) pwd. 6- Which operator is used for exponentiation in Python? Answer: C) **. 7- Which command is used to compile a C program in Linux?Midterm 1 Solution. Instructions. Total time allowed for the exam is 80 minutes. Some useful formulas: Discrete Time Fourier Transform (DTFT) ∞. X(ejω) =. n=−∞ X x[n]e−jωn. …Sample numerical reasoning test question. Answer: 3) 50%. Solution: Identify how much snow fell in Whistler in November and December (Nov = 20cm & Dec = 30cm) Calculate the difference between the two months: 30 - 20 = 10. Divide the difference by November (original figure) and multiply by 100: 10/20 x 100 = 50%.Real DSP-110 vce exam Questions and Answers; ExamOut DSP-110 PDF has all Real Exam Questions; DSP-110 100% exact test questions ; Up-to-date DSP-110 braindumps questions; DSP-110 has Multiple Choice, HotSpot and Drag Drop type of Exam Questions. We offer Free DSP-110 exam Demo; All DSP-110 questions are 100% verified and reviewed by our experts ...

Usssa softball tournaments utah.

Question 1. Problem Statement: While playing an RPG game, you were assigned to complete one of the hardest quests in this game. There are n monsters you’ll need to defeat in this quest.Each monster i is described with two integer numbers – poweri and bonusi.To defeat this monster, you’ll need at least poweri experience points.If you try fighting this …6) The Digital Signal Processing system: Consumers more power. Consumes less power. Applicable for low-frequency signals. Both (a) and (c). Show Answer. Workspace. 7) The length of the output sequence (n) of the two sequences (n1 and n2) can be calculated using the formula: n = n1 - n2 + 1.Midterm 1 Solution. Instructions. Total time allowed for the exam is 80 minutes. Some useful formulas: Discrete Time Fourier Transform (DTFT) ∞. X(ejω) =. n=−∞ X x[n]e−jωn. Inverse Fourier Transform.and answers Dsp exam questions and answers (PDF) flashcards learning tools and textbook solutions quizlet google 350 best trivia questions with answers 2024 edition 300 best trivia questions and answers for a fun time parade answers the most trusted place for answering life s questions 211 best trivia questions with … 3. (a) This question is simply asking how to delay a signal by 1.25 milliseconds. The problem is that, with the 10 kHz sampling rate specified, this corresponds to 12 1 / 2 samples i.e. not an integer number of samples, so not something that can be created with a simple chain of unit delay elements.

7 DSP Orientation Tests Effective 11.15.21 Section III: Waivers for People with Developmental Disabilities Please circle the correct answers for the following multiple choice and true/false questions on the test answer sheet. 1. The three DD Waivers pay for: A) Services for people who live in nursing homes and ICFS-IID.• Exam is closed book. • You may use the provided formula sheet. • You may use ENCS standard calculator. • Show all the intermediate steps of your solution. • Make reasonable assumptions if required. Graduate Students: Answer all 10 questions Undergraduate Students: Select 9 questions and answer them. If you answer 10 questions,1349 Questions and Answers for the 200-301 Exam. 1056. Students Passed the "Cisco Certified Network Associate (CCNA)" exam. 95.1%. Average score during Real Exams at the Testing Centre. Browse 1349 Questions. 94% …Previous Question Papers; Cut-off Marks; Answer Keys; Marks Information; Public Disclosure of marks & other details of non-recommended willing candidates; Specimen Question Cum Answer Booklet (QCAB) Common mistakes committed by the candidates in Conventional Papers; Revised Syllabus and Scheme; Representation on Question …Histogram of Scores for Exam 1: E1Hist_Off.pdf; E1Hist_On.pdf Fall 2001 Exams plus Solutions Final Exam from Fall 2001: pdf. Exam #3 from Fall 2001: pdf ps, Solution: pdf. Exam #2 from Fall 2001: pdf ps, Solution: pdf Exam #1 from Fall 2001: pdf ps, Solution: pdf Fall 2000 Exams plus Solutions Final Exam from Fall 2000: pdfDsp Exam Questions And Answers 1 Dsp Exam Questions And Answers Recognizing the pretension ways to acquire this books Dsp Exam Questions And Answers is additionally useful. You have remained in right site to start getting this info. get the Dsp Exam Questions And Answers belong to that we give here and check out the link. These questions are very useful as DSP viva questions also. Question -1: Explain DSP basic architecture. Mention how to select DSP architecture suitable for algorithm under development. Refer DSP Architecture basics . Question -2: Explain Harvard and Von Neumann architecture and mention difference between them. 5 DSP Orientation Tests Section II: Introduction to Developmental Disabilities Please circle the correct answers for the following multiple choice and true/false questions on the …Previous Question Papers; Cut-off Marks; Answer Keys; Marks Information; Public Disclosure of marks & other details of non-recommended willing candidates; Specimen Question Cum Answer Booklet (QCAB) Common mistakes committed by the candidates in Conventional Papers; Revised Syllabus and Scheme; Representation on Question …Past exam papers: Digital Signal Processing. Solution notes are available for many past questions to local users. They were produced by question setters, primarily for the …Excel is a powerful tool that can help you get ahead in your studies. Whether you’re preparing for an upcoming exam or just want to brush up on your skills, these Excel quiz questi...Maharashtra SET Exam Question Papers 26th March 2023. 1. PAPER I: SET A , SET B , SET C , SET D. 2. MARATHI PAPER-II: SET A SET B SET C SET D. 3. HINDI PAPER-II: SET A SET B SET C SET D. 4. ENGLISH PAPER-II: SET A …

This digital signal processing objective questions with answers will contain an overall description from the item, Format : PDF - Updated on December 30. DIGITAL SIGNAL OBJECTIVE MULTIPLE CHOICE QUESTION ANSWERS DIGITAL. ECGR4124 Digital Signal Processing. Midterm Multiple-choice answers should be within 5% of correct …

Related: Common Algorithm Interview Questions (With Example Answers) 3. Outline the difference between a digital signal microprocessor and a microprocessor. While many non-technical people might confuse these two devices, employers expect individuals working in a DSP role to know the difference between them.Apr 9, 2024 · A DSP exam is an assessment that evaluates an individual’s knowledge and skills in digital signal processing (DSP). It typically covers fundamental concepts, algorithms, and applications of DSP. The purpose of this article is to provide a comprehensive guide to DSP exam questions and answers, covering various topics and levels of difficulty. 1000+ Digital Signal Processing MCQ PDF arranged chapterwise! Start practicing now for exams, online tests, quizzes, and interviews!Get Work Power and Energy Multiple Choice Questions (MCQ Quiz) with answers and detailed solutions. Download these Free Work Power and Energy MCQ Quiz Pdf and prepare for your upcoming exams Like Banking, SSC, Railway, UPSC, State PSC. ... Hence the correct answer is option 1. India’s #1 Learning PlatformName of Examination: CBI (DSP) LDCE-2023. Date of Notification. 20/12/2023. Date of Commencement of Examination. 16/03/2024. Duration of Examination. Two Day. Last Date for Receipt of Applications. 09/01/2024 - 6:00pm.1349 Questions and Answers for the 200-301 Exam. 1056. Students Passed the "Cisco Certified Network Associate (CCNA)" exam. 95.1%. Average score during Real Exams at the Testing Centre. Browse 1349 Questions. 94% …ECE 538 Digital Signal Processing I: Fall 2023 Meets Live MWF, 12:30 - 1:20 PM (ET), WANG 2599 . ... There will be some questions very similar to questions on Exams 1 and 2. There will be some fundamental questions on Perfect Reconstruction Filter Banks. ... pdf Exam #3 from Fall 2009: pdf and Exam 3 Solution; jpg. Exam #2 from ...

Cpap loud when inhaling.

O'reilly hazard ky.

Answer: C. Let x (n) be the input signal, y (n) be the response, and h (n) be the unit sample response of the system. What is the relation given by. A. Convolution difference. B. Convolution sum. C. Convolution product. D. Convolution division. Answer: B.CPIM-DSP PDF Downloadable; CPIM-DSP Questions and Answers PDF; CPIM-DSP 90 Days Free Update; CPIM-DSP 30 Days Money Back Pass Guarantee; CPIM-DSP Exam Description You don’t need to visit the diminish websites before finding the most appropriate website for purchasing your CPIM-DSP dumps now. We offer what exactly you are looking for.May 23, 2022 · Figure 5.17.5. This signal serves as the input to a first-order RC lowpass filter. We want to design the filter and the parameters Δ and T so that the output voltage at time 4T (for a 4-bit converter) is proportional to the number. This combination of pulse creation and filtering constitutes our simple D/A converter. The Delta Sigma Pi Leadership Foundation is the charitable giving arm of the Fraternity. It is a registered 501(c)(3) charitable organization, gifts and donations are tax deductible to the extent allowable by law. The mission of the Leadership Foundation is to financially support educational and charitable programs that enable members of Delta ...Ans. In Infosys Previous Year Placement Papers for both on campus and off campus test papers in Infosys Online Test they use Dev Square and the questions on our Infosys dashboard are of that platform so you can without any hesitation start preparation from this page for Infosys Written Test Papers with Answers. Ques.TSPSC Previous year’s question paper gives an idea about the type of questions that can be asked in the paper. TSPSC previous year question paper pdf will also help candidates understand the difficulty level of this exam so that students can strategize their preparations accordingly. Solving UPSC Previous year papers with answers will help ...Exams ; Quiz 3, Quiz 3 Fall 2011 (PDF), None ; Quiz 3 Solutions, Quiz 3 Solution Fall 2011 (PDF), None ; Final Exam, Final Exam Fall 2011 (PDF) · Final Exam Spring ...Feb 23, 2009 · 7. Trainer will give the Basic Administration test to the DSP. 8. Trainer will review the test with the DSP and answer any questions. 9. Trainer will show the DSP the location and storage of all medications and medical supplies necessary for medication administration. 10. Trainer will show the DSP the medication sheets, medication count sheets, Exam Familiarity: Previous year question papers provide valuable insight into the exam pattern, question types, and marking Idea. Content Coverage: By practicing with past papers, you can assess which topics are frequently covered in the exams. Time Management: Solve these papers under real exam conditions to improve your time …View Answer. 12. In general, a digital system designer has better control of tolerances in a digital signal processing system than an analog system designer who is designing an equivalent analog system. a) True. b) False. View Answer. 13. The term ‘bandwidth’ represents the quantitative measure of a signal. a) True.128 Civics Questions and Answers (2020 version) - USCIS ….

The best way to prepare for your on-site interview is to consider how you’ve demonstrated key success traits in your previous professional experience. Our interviews are rooted in behavioral-based questions which ask about past situations you’ve faced and how you handled them. Have specific examples that showcase your expertise, and ... STEP 1: Submit your expression of interest. STEP 2: Complete an online application form. STEP 3: Assess whether the Amazon DSP is suitable for you. STEP 4: Complete multi-week training. STEP 5: Set up your Amazon DSP business and recruit your delivery drivers. STEP 6: Get delivering the parcels to Amazon customers! ... PDF format which students may download to boost their preparations for the Board Exam. ... exam time to attempt all questions to score more. ... Solution for Class ...Here you can find out Bikaner Technical University (BTU) Solved Question Paper of the year 2023, 2022, 2021, 2020, 2019, 2018 & also you can download this BTU Question Paper in PDF Format. If you are searching for Bikaner Technical University Previous Year/Old or Model Question Papers, Question Bank or BTU Question Papers please …A: "Zero pad the signal by the appropriate number of zeros between samples, and then low pass at the new nyquist frequency. Q: "How can you make upsampling/downsampling faster?" A: "Use a polyphase filter". (Real quick, polyphase works much faster because it never actually computes all those multiplies with zeros that you used for padding.Questions CO Bloom’ s Level 1 Find the Z transform of {1,0,2,0,3} May/ June 2007 1+0z-1+2z-2+3Z-4 C312.1 BTL1 2 Check whether the system y(n)=ex(n) is linear. May/ June …JNTUK B.Tech DSP, Question papers, Answers, important QuestionDIGITAL SIGNAL PROCESSING R13 Regulation B.Tech JNTUK-kakinada Old question papers previous question papers download. Mana Results. Home; GPA Calculator; Question Papers ... DIGITAL SIGNAL PROCESSING: 06: 2022: Download:“Digital Signal Processing – Principles, Algorithms & Applications”, Fourth Edition, Pearson Education, Prentice Hall, 2007 9-89 II John G. ProaKis and Dimitris G.ManolaKis, “Digital Signal Processing – Principles, Algorithms & Applications”, Fourth Edition, Pearson Education, Prentice Hall, 2007 90-132 III5 DSP Orientation Tests Section II: Introduction to Developmental Disabilities Please circle the correct answers for the following multiple choice and true/false questions on the test answer sheet. 1. The definition of developmental disability includes: A) A severe, chronic disability that is attributable to a mental or physical impairment“Digital Signal Processing – Principles, Algorithms & Applications”, Fourth Edition, Pearson Education, Prentice Hall, 2007 9-89 II John G. ProaKis and Dimitris G.ManolaKis, “Digital Signal Processing – Principles, Algorithms & Applications”, Fourth Edition, Pearson Education, Prentice Hall, 2007 90-132 III Dsp exam questions and answers pdf, and do the questions yourself. Answers for these questions will not be posted on the web, but will. be discussed during the tutorial class. In addition, during the tutorial, 1-2 new questions that are not in your notes will be provided by the. tutor, for you to try in class. These questions and solutions will not be available on the web also, so, Here you can find out Bikaner Technical University (BTU) Solved Question Paper of the year 2023, 2022, 2021, 2020, 2019, 2018 & also you can download this BTU Question Paper in PDF Format. If you are searching for Bikaner Technical University Previous Year/Old or Model Question Papers, Question Bank or BTU Question Papers please …, ACCA Past Papers - ACCA Past Exams - Questions and Answers, Download PDF documents, ACCA Articles and Tests, ACCA Exam tips, Essential Guide articles, Final Exam. Final Exam Fall 2011 (PDF) Final Exam Spring 2010 (PDF) Final Exam Fall 2009 (PDF) Final Exam Solutions. Final Exam Solution Fall 2011 (PDF) Final Exam Solution Spring 2010 (PDF) Final Exam Solution Fall 2009 (PDF) This section contains exams and solutions from current and previous years., If you’re looking for a fun and interactive way to engage your audience, free trivia questions and answers are the perfect solution. Engaging your audience is crucial in today’s fa..., CertsWarrior Passing Guarantee in the First Attempt is team of CPIM-DSP certified professionals looking to help CPIM-DSP experts in field. Special 16 USD Discount OFFER 00, To ace the CPIM-DSP 2024 exam, candidates need more than just textbooks and generic study materials. The CPIM-DSP 2024 Exam Guide, offered in a user-friendly PDF format, stands out as a key resource., This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Z Transform”. 1. The Z-Transform X (z) of a discrete time signal x (n) is defined as ____________. a) ∑∞ n=−∞ x(n)zn. b) ∑∞ n=−∞ x(n)z−n. c) ∑∞ n=0 x(n)zn. d) None of the mentioned., Are you preparing for the OET Reading exam? Looking for effective ways to enhance your reading skills? Look no further. In this article, we will provide you with valuable tips and ..., Physics Problems and Solutions: Homework and Exam Physexams.com The magnitude of this vector is also found as |⃗c|= p (−1)2 + (−2)2 = √ 5 Now, according to unit vector definition, divide the obtained vector by its magnitude to find the unit vector points in the direction of sum of the two vectors given as below ˆc= (−1,−2) √ 5 ..., Here you can find out Bikaner Technical University (BTU) Solved Question Paper of the year 2023, 2022, 2021, 2020, 2019, 2018 & also you can download this BTU Question Paper in PDF Format. If you are searching for Bikaner Technical University Previous Year/Old or Model Question Papers, Question Bank or BTU Question Papers please …, Physics Problems and Solutions: Homework and Exam Physexams.com Using unit vector definition, the components of vector divided by its magnitude, the unit vector in the direction of the resultant vector is found as follows ˆc= C⃗ |C⃗| = (1,−2,6) p 12 + (−2)2 + 62 = 1 √ 41, −2 √ 41, 6 √ 41 6. In the following figure,, Related: Common Algorithm Interview Questions (With Example Answers) 3. Outline the difference between a digital signal microprocessor and a microprocessor. While many non-technical people might confuse these two devices, employers expect individuals working in a DSP role to know the difference between them., Are you considering signing up for a Prime membership free trial? If so, you may have some questions about how it works and what benefits you can enjoy during this trial period. In..., Student Resource Guide, Year 1. The Department of Developmental Services (DDS) and the California Department of Education (CDE) would like to extend their appreciation to the many people and organizations throughout the state of California and across the nation who contributed their time and expertise to the initial development and revisions of ..., View Answer. 12. In general, a digital system designer has better control of tolerances in a digital signal processing system than an analog system designer who is designing an equivalent analog system. a) True. b) False. View Answer. 13. The term ‘bandwidth’ represents the quantitative measure of a signal. a) True., Section 7: LMS Algorithm Aktu Important Questions. a. Explain the block diagrammatic presentation of DSP processor, with its architecture, addressing formats and its commercial usages. Ans. Fig. shows the basic elements of digital signal processing system. Input is given through analog digital converter and output is obtained through …, Explain your reasoning. We have already shown that the output y[n] = x[n] ∗ (αnh[n]). Since the input and output are related via a convolution relationship, the system is a linear and time-invariant. Moreover, the impulse response of the overall system enclosed by the dashed box is g[n] = αnh[n]. , , Construction and Industry Certification exam pdf dumps are based on actual exam questions and answers that allow you to test your knowledge and skills in a CPIM-DSP Construction and Industry Certificationto pass an official CPIM-DSP exam. These exam questions practice tests are updated to what you’ll be able to pass your exam with guaranteed ..., SIRA Exam Model Questions and Answers (with pdf) Introduction to SIRA. SIRA stands for Security Industry Regulatory Agency, a government body in Dubai, which is responsible for licensing and controlling the security industry as well as certifying CCTV installation. A security License can be obtained by completing one week of training (40 …, ln(Qt) = 0 + 1ln(Pt) + 2ln(Yt) + ut, where Qt and Pt are the quantity (number) and price of haircuts obtained in Cambridge in year t and Yt is mean income in Cambridge in year t. Express the price elasticity of demand in terms of the coefficients in (1). [6 points] Answer: The price elasticity of demand is 1, which is the derivative of ln(Qt ..., One way to honor and respect an Individual's choice is to: Give them the chosen item or activity. An Individual choice that should be talked about during the person-centered planning process is: What job an Individual wants to have. One way for a DSP to help with an Individual's person-centered-planning process is to: Share knowledge of an ..., Exercise : Digital Signal Processing - General Questions. Digital Signal Processing - General Questions. Digital Signal Processing - True or False. Digital Signal Processing - Filling the Blanks. 1. In a flash analog-to-digital converter, the output of each comparator is connected to an input of a ________. decoder., Download link is provided for Students to download the Anna University EC3492 Digital Signal Processing Syllabus Question Bank Lecture Notes Part A 2 marks with answers & Part B 16 marks Question Bank with answer, Anna University Question Paper Collection, All the materials are listed below for the students to make use of it and get good (maximum) marks with our study materials. , Frequently Asked Questions on DSP Notes. Question 1. Explain Digital Signal Processing? Why is signal processing essential? Answer: Digital Signal …, “Digital Signal Processing – Principles, Algorithms & Applications”, Fourth Edition, Pearson Education, Prentice Hall, 2007 9-89 II John G. ProaKis and Dimitris G.ManolaKis, “Digital Signal Processing – Principles, Algorithms & Applications”, Fourth Edition, Pearson Education, Prentice Hall, 2007 90-132 III, Question 1: Discuss a time as a DSP when you have experienced frustration dealing with a client. Skill Tested: Patience. Patience is a necessary skill for anyone who wishes to provide compassionate, high-quality support for people with intellectual or developmental disabilities. Any candidate who intends to work as a DSP …, Another week of travel and vaccination requirements between the US and EU in this week's edition of TPG's Q&A. After last week's long-awaited news of the U.S. reopening to internat..., By reworking the principles of electronics, telecommunication and computer science into a unifying paradigm, DSP is a the heart of the digital revolution that brought us CDs, DVDs, MP3 players, mobile phones and countless other devices. In this series of four courses, you will learn the fundamentals of Digital Signal Processing from the ground up., Previous Question Papers; Cut-off Marks; Answer Keys; Marks Information; Public Disclosure of marks & other details of non-recommended willing candidates; Specimen Question Cum Answer Booklet (QCAB) Common mistakes committed by the candidates in Conventional Papers; Revised Syllabus and Scheme; Representation on Question …, These questions are very useful as DSP viva questions also. Question -1: Explain DSP basic architecture. Mention how to select DSP architecture suitable for algorithm under development. Refer DSP Architecture basics . Question -2: Explain Harvard and Von Neumann architecture and mention difference between them., Solution: Signal 1 has exactly two cycles of a cosine, so you would expect X(2) and X(−2) to be nonzero, and other DFT coefficients to be 0; that gives DFT 4. Note that X(−2) is really X(N − 2). Signal 2 has two and a half cycles of a cosine, so you would expect the DFT to have a peak at index.