Question Solved1 Answer (a) (3 pts) For each of the following signals, determine both energy and power, and classify whether the signal is an energy signal, power signal, or neither of the two. Justify your answers. i. (1 pt) x(t) = e-2tu(t). ii. (1 pt) x(t) = cos(t) iii. (1 pt) x(t) = ej(2t+A/4) (b) (2 pts) Let g(t) = e-ct, where c is a complex number with a strictly positive real part, say c= = a+jb with a > 0. Determine if g(t) is an energy or a power signal (or neither).

2. A 5 KVA, 500/250 V, 50 Hz, single phase transformer gave the following readings, O.C. Test: 500 V, 1 A, 50 W (L.V. side open) S.C. Test : 25 V, 10 A, 60 W (L.V. side shorted) Determine: i) The efficiency on full load, 0.8 lagging p.f. ii) The voltage regulation on full load, 0.8 leading p.f. iii) The efficiency on 60% of full load, 0.8 leading p.f. iv) Draw the equivalent circuit referred to primary and insert all the values in it.

Part B Using this relationship, what is the position of the bowling ball at times t=4.0st=4.0s and t=8.0st=8.0s? Part A The position of a bowling ball rolling on a smooth floor as a function of time t is given by: X(t) = vot+20, where vo = 2.5 m/s and 20 = -5.0 m. The polynomial relationship between position and time for the bowling ball is View Available Hint(s) O cubic inverse exponential quadratic linear Submit Previous Answers Correct A linear function is of the form y=mx+b where m and b are constants. Note that for a linear function written in this form, that is the highest power of the independent variable in the polynomial expression for the dependent variable y is 1. In a linear function the constant m is called the slope, and the constant b is called the y-intercept. Part B Using this relationship, what is the position of the bowling ball at times t = 4.0s and t = 8.0s? View Available Hint(s) Hint 1. How to approach the problem Evaluate the given relationship for the position of the bowling ball, z(t), using the given values of the constants to and vo, and at each of the given times. (4.0 s) = 15m and +(8.0 s) = 25 m (4.0 s) = 17.5m and (8.0 s) = -37.5m (4.0 s) = 10 m and (8.0 s) = 20m (4.0 s) = 5.0 m and z(8.0 s) = 15m Activate Windows Go to Settings to activate Windows. Submit Previous Answers Request Answer

1 point) Determine the truth value of the following statements if the universe of discourse of each variable is the set of real numbers. Enter your answer as T or F. 2.3x(x2 =-1) xty 6, Vray (x + y=1) 7.3x x2 2) 11·3x3x ((x + 2y = 2) ^ (2x + 4y = 5))

Systolic blood pressure levels above 120 mm Hg are considered to be high. For the 100 systolic blood pressure levels listed in the companying data the 12046000 mm Hg and the standard deviation is 14.44699 mm Hg Assume that a simple random sample has been selected. Use aos scancer that the sample is from a population with a mean greater than 120 mm Hg Click Systolic blood pressure levels above 120 mm Hg are considered to be high. For the 100 systolic blood pressure levels listed in the companying data the 12046000 mm Hg and the standard deviation is 14.44699 mm Hg Assume that a simple random sample has been selected. Use aos scancer that the sample is from a population with a mean greater than 120 mm Hg Click the icon to view the data set of systolic blood pressure levels Identity the null and alternative hypotheses. Ho H: (Type Integers or decimals. Do not round) Identify the test statistic (Round to two decimal places as needed.) Identify the P-value (Round to three decimal places as needed.) State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original.com the null hypothesis. There V sufficient evidence at the 0.05 significance level to with a mean systolic blood pressure level greater than 120 mm Hg stolic Blood Pressure Levels Body and exam measurements are from 100 subjects. SYSTOLIC systed pressure (mm Hg). SYSTOLIC 126 128 134 102 112 136 120 142 146 96 112 142 110 112 112 104 118 144 108 122 134 114 stolic Blood Pressure Levels 108 512 112 114 118 124 110 122 102 108 120 34 112 122 116 Systolic Blood Pressure Levels 128 138 94 112 140 108 112 120 112 122 132 92 114 122 106 106 118 114 132 136 106 120 120 96 114 120 122 ystolic Blood Pressure Levels 04 190 114 120 110 118 138 106 124 Systolic Blood Pressure Levels 120 122 125 104 125 130 92 142 166 98 110 126 100 136 156 114 128 132 110 118 138 106 124 136 128 SYSTOLIC

Problem 4a: Write a recursive C++ program to solve the following problem : P(1) = 3 P(2) = 4 P(n) =P(n-1)+P(n-2) for n>2 To test – output for P(4)=11 P(6) = 29 and P(7) =47 Hint: main shall call a function int par(int n) that returns 3 if n=1, it returns 4 if n = 2, and it returns par(n-1) + par(n-2) if n>2. Sample Output (Your name will replace mine & yours will be P(5)) John shows P( 7) has 47 units b: Draw a call tree for P(5). This should look similar to Figure 2.30 in the textbook. Note: the numbers just above the ovals are the return values. You may hand draw and scan, but you can complete in Google Suites or an App of your choice.

(50%) Proble 1: Standing at the base of one of the cliffs of Mt Arapiles in Victoria, Australia, a hiker hears a rock break loose from a height of 105 m. He can't see the rock right away but then does, 1 2 s later 50% Part (a) How far above the ground in meters is the rock when the hiker starts to see it? Neglect the time for the sound to reach the E Grade (50%) Proble 1: Standing at the base of one of the cliffs of Mt Arapiles in Victoria, Australia, a hiker hears a rock break loose from a height of 105 m. He can't see the rock right away but then does, 1 2 s later 50% Part (a) How far above the ground in meters is the rock when the hiker starts to see it? Neglect the time for the sound to reach the E Grade Summar Deductions Potential 1 ino cotan) asin ac Submbsion Atmempts remainin Glo per anempt) atar detailed vien cosho tanh() Degrees Radians l -1. Cotanho.」 Submit Hnt Mintsdeduction per ht Hints remaig Feedback: iu deduction per feedback. How much time in seconds after he notices the alling rock dees he have to move before the rock hits h35 head? Ignore the 0% Part 5 height of the hiker