{"id":54,"date":"2025-01-31T09:20:14","date_gmt":"2025-01-31T07:20:14","guid":{"rendered":"https:\/\/sisu.ut.ee\/signaalitootlus2\/eksam\/"},"modified":"2025-01-31T09:20:14","modified_gmt":"2025-01-31T07:20:14","slug":"eksam","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/signaalitootlus2\/eksam\/","title":{"rendered":"Eksam"},"content":{"rendered":"<div id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam1\" style=\"display:none;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-1\" enctype=\"multipart\/form-data\">\n<div class=\"watu-question \" id=\"question-1\" style=\";\"><div id=\"questionWrap-1\" class=\"  watupro-required-8 watupro-question-id-8\">\n\t\t\t<div class=\"question-content\"><div><p>It is not possible to construct an ideal filter.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_1\" value=\"8\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType8\" class=\"answerTypeCnt1\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-8\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices8\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-8[]\" id=\"answer-id-16\" class=\"answer   answerof-8 \" value=\"16\"><label for=\"answer-id-16\" id=\"answer-label-16\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-8[]\" id=\"answer-id-17\" class=\"answer   answerof-8 \" value=\"17\"><label for=\"answer-id-17\" id=\"answer-label-17\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-2\" style=\";\"><div id=\"questionWrap-2\" class=\"  watupro-required-9 watupro-question-id-9\">\n\t\t\t<div class=\"question-content\"><div><p>Parseval's identity is analogous to Pythagorean theorem.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_2\" value=\"9\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType9\" class=\"answerTypeCnt2\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-9\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices9\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-9[]\" id=\"answer-id-18\" class=\"answer   answerof-9 \" value=\"18\"><label for=\"answer-id-18\" id=\"answer-label-18\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-9[]\" id=\"answer-id-19\" class=\"answer   answerof-9 \" value=\"19\"><label for=\"answer-id-19\" id=\"answer-label-19\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-3\" style=\";\"><div id=\"questionWrap-3\" class=\"  watupro-required-1 watupro-question-id-1\">\n\t\t\t<div class=\"question-content\"><div><p>Is the following property true (X - Fourier transform)?<\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"371\" height=\"79\" class=\"alignnone wp-image-24\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/40\/freq_shift.png\" title=\"freq_shift.png\" alt=\"freq_shift.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/40\/freq_shift.png 371w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/40\/freq_shift-300x64.png 300w\" sizes=\"auto, (max-width: 371px) 100vw, 371px\"><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_3\" value=\"1\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType1\" class=\"answerTypeCnt3\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-1\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices1\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-1[]\" id=\"answer-id-1\" class=\"answer   answerof-1 \" value=\"1\"><label for=\"answer-id-1\" id=\"answer-label-1\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-1[]\" id=\"answer-id-2\" class=\"answer   answerof-1 \" value=\"2\"><label for=\"answer-id-2\" id=\"answer-label-2\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-4\" style=\";\"><div id=\"questionWrap-4\" class=\"  watupro-required-5 watupro-question-id-5\">\n\t\t\t<div class=\"question-content\"><div><p>Run-length coding is an efficient method to compress black and white images.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_4\" value=\"5\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType5\" class=\"answerTypeCnt4\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-5\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices5\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-5[]\" id=\"answer-id-10\" class=\"answer   answerof-5 \" value=\"10\"><label for=\"answer-id-10\" id=\"answer-label-10\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-5[]\" id=\"answer-id-11\" class=\"answer   answerof-5 \" value=\"11\"><label for=\"answer-id-11\" id=\"answer-label-11\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-5\" style=\";\"><div id=\"questionWrap-5\" class=\"  watupro-required-3 watupro-question-id-3\">\n\t\t\t<div class=\"question-content\"><div><p>Using entropic coding it is possible to represent a symbol with less number of bits than the entropy (on average).<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_5\" value=\"3\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType3\" class=\"answerTypeCnt5\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-3\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices3\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-3[]\" id=\"answer-id-6\" class=\"answer   answerof-3 \" value=\"6\"><label for=\"answer-id-6\" id=\"answer-label-6\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-3[]\" id=\"answer-id-7\" class=\"answer   answerof-3 \" value=\"7\"><label for=\"answer-id-7\" id=\"answer-label-7\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-6\" style=\";\"><div id=\"questionWrap-6\" class=\"  watupro-required-4 watupro-question-id-4\">\n\t\t\t<div class=\"question-content\"><div><p>In order to enhance the detail in your image you should use a high pass filter.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_6\" value=\"4\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType4\" class=\"answerTypeCnt6\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-4\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices4\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-4[]\" id=\"answer-id-8\" class=\"answer   answerof-4 \" value=\"8\"><label for=\"answer-id-8\" id=\"answer-label-8\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-4[]\" id=\"answer-id-9\" class=\"answer   answerof-4 \" value=\"9\"><label for=\"answer-id-9\" id=\"answer-label-9\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-7\" style=\";\"><div id=\"questionWrap-7\" class=\"  watupro-required-6 watupro-question-id-6\">\n\t\t\t<div class=\"question-content\"><div><p>In order to perform a FFT on a signal it is required to pad the signal so that the number of elements in it is of power of 2.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_7\" value=\"6\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType6\" class=\"answerTypeCnt7\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-6\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices6\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-6[]\" id=\"answer-id-12\" class=\"answer   answerof-6 \" value=\"12\"><label for=\"answer-id-12\" id=\"answer-label-12\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-6[]\" id=\"answer-id-13\" class=\"answer   answerof-6 \" value=\"13\"><label for=\"answer-id-13\" id=\"answer-label-13\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-8\" style=\";\"><div id=\"questionWrap-8\" class=\"  watupro-required-7 watupro-question-id-7\">\n\t\t\t<div class=\"question-content\"><div><p>Not all active SAR systems are side-looking.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_8\" value=\"7\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType7\" class=\"answerTypeCnt8\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-7\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices7\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-7[]\" id=\"answer-id-14\" class=\"answer   answerof-7 \" value=\"14\"><label for=\"answer-id-14\" id=\"answer-label-14\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-7[]\" id=\"answer-id-15\" class=\"answer   answerof-7 \" value=\"15\"><label for=\"answer-id-15\" id=\"answer-label-15\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-9\" style=\";\"><div id=\"questionWrap-9\" class=\"  watupro-required-10 watupro-question-id-10\">\n\t\t\t<div class=\"question-content\"><div><p>Signals are often transformed to frequency domain to perform speed up filtering (using Convolution theorem).<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_9\" value=\"10\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType10\" class=\"answerTypeCnt9\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-10\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices10\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-10[]\" id=\"answer-id-20\" class=\"answer   answerof-10 \" value=\"20\"><label for=\"answer-id-20\" id=\"answer-label-20\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-10[]\" id=\"answer-id-21\" class=\"answer   answerof-10 \" value=\"21\"><label for=\"answer-id-21\" id=\"answer-label-21\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-10\" style=\";\"><div id=\"questionWrap-10\" class=\"  watupro-required-2 watupro-question-id-2\">\n\t\t\t<div class=\"question-content\"><div><p>What is the inverse Fourier transform of:<\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"409\" height=\"178\" class=\"alignnone wp-image-25\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/40\/cos.png\" title=\"cos.png\" alt=\"cos.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/40\/cos.png 409w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/40\/cos-300x131.png 300w\" sizes=\"auto, (max-width: 409px) 100vw, 409px\"><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_10\" value=\"2\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType2\" class=\"answerTypeCnt10\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-2\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices2\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-2[]\" id=\"answer-id-3\" class=\"answer   answerof-2 \" value=\"3\"><label for=\"answer-id-3\" id=\"answer-label-3\" class=\" answer\"><span><p>cos(t)<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-2[]\" id=\"answer-id-5\" class=\"answer   answerof-2 \" value=\"5\"><label for=\"answer-id-5\" id=\"answer-label-5\" class=\" answer\"><span><p>Dirac function<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-2[]\" id=\"answer-id-4\" class=\"answer   answerof-2 \" value=\"4\"><label for=\"answer-id-4\" id=\"answer-label-4\" class=\" answer\"><span><p>sin(t)<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div style=\"display:none\" id=\"question-11\">\n\t<div class=\"question-content\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t<\/div>\n<\/div>\n\n<br>\n\t\n\t\t\t<div class=\"watupro_buttons flex \" id=\"watuPROButtons1\">\n\t\t  <div id=\"prev-question\" style=\"display:none;\"><input type=\"button\" value=\"&lt; Previous\" onclick=\"WatuPRO.nextQuestion(event, 'previous');\"><\/div>\t\t  \t\t  \t\t   \n\t\t   \t  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