Question

file:/C/Users/rj_ea/OneDrive/Desktap/ENGG2 55%20FINAL %20EXAM %20PAST%20PAPERS/ENGG255%20past%20exam%20paper.pdf f data acquisition systems a) Write down the five main components 2.5 marks b) Consider the below wave function and answer the following questions F(t)-cos(T.12t)+cos(T.10t) Graph the beat function for this wave 5 marks i What the beat frequency? 2.5 marks i Calculate the proper sampling rate for this wave. 2 marks iv) Calculate the time intervals between the samples. 2 marks c) Quantize an analoguer digital convertor with dynamic range of 1V in 4 bits. 5 marks d) Dead zone and resolution are two important characterisation values for most sensing devices. Describe the differences between these two values 2 marks e) Draw the circuit and calculate the cut off frequency for a low pass filter with R-10000 and C 1mF. 4 marks 25 PM Type here to search ENG group of students were classified in terms of personality (introvert or extrovert) and in terms of music ** preferences (Reflective and Complex, Upbeat and Conventional, Energetic and Rhythmic and Intense and Rebellious) with the purpose of seeing whether there is an association (relationship) between personality and music preference. Data was collected from 400 students and presented in the 2 (rows) x4 (cols) contingency table below Music Preferences and Energetic Intense and Totals Reflective and Upbeat Personality Conventional Complex Rebellious and Rhythmic 30 Introvert 20 E 44 100 Extrovert 180 300 34 50 36 80 400 Totals 200 40 80 Suitable null and alternative hypotheses might be: H Music preference is not associated with personality, and **** * ** Music preference is associated with personality H a) Plot the data presented in the contingency table. 5 marks b) What is the best way to calculate the comrelation between these two variables? And why? 2 marks 6 marks c) Calculate the correlation between these two variables and interpret the result. 0.100 0050 0.025 - 0010 0.005 0.001 27055 3.8415 5,0239 .8794 10.8276 6.6349 1 5.9915 4.6052 7.3778 9.2103 10.5966 13.8155 6.2514 7.8147 16 2662 9.3484 11.3449 12.8382 7.7794 11.1433 9.4877 13.2767 14.8603 18.4668 9 2364 1.0705 8325 15.0863 16.7496 20.5150 14494 22.4577 10.6446 12.5916 16.8119 18.5476 9:25 PM Type here to search ENG 13/06/2019

Answer 1

Solution:

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