Q10. Transmission lines transport electricity for a long distance through cables. i. Distinguish between overhead and...
QUESTION ONE a. Distinguish between the following economic concepts with illustrations: (i) A tariff and a quota (4 marks) (ii) An ad valorem tax and a specific tax (4 marks) b. Explain any four (4) restrictions on international trade. (12 marks) c. Explain any four (4) fiscal measures that a country can take to solve the problem of persistent balance of payments deficit? (12 marks) d. Explain four (4) disadvantages of this method of estimating national income? (8 marks) SECTION...
Two long, parallel transmission lines, d = 40.0 cm apart, carry I1 = 25.0 A and I2 = 75.0 A. Don't do part A, only parts D-F. 2. Two long, parallel transmission lines, d = 40.0 cm apart, carry 11 = 25.0 A and 12 = 75.0 A. We are to find all locations where the net magnetic field due to the two wires is zero if these currents are in: i) the same direction and ii) the opposite direction....
Solve all questions and submit through blackboard by March 26, 2020 Q. 1 (i) Classify short, medium and long transmission lines based on distance (km). (ii) Classify transmission lines (low, medium, high, extra high) based on voltage levels (kV). (iii) What is commonly used conductor material for overhead transmission lines. Why Aluminum and copper materials are not used for conductors of transmission lines. Q. 2: A 3-phase, 230 kV transmission line having a length of 50 km is composed of...
The distance X between trees in a given forest has a probability density function given f (x) cex/10, x >0, and zero otherwise with measurement in feet i) Find the value of c that makes this function a valid probability density function. [4 marks] ii) Find the cumulative distribution function (CDF) of X. 5 marks What is the probability that the distance from a randomly selected tree to its nearest neighbour is at least 15 feet. iii) 4 marks) iv)...
A long-distance telephone company uses a fiber-optic network to transmit phone calls and other information between locations. Calls are carried through cable lines and switching nodes. A portion of the company’s transmission network is shown here. The numbers above each arc show the capacity in thousands of messages that can be transmitted over that branch of the network.To keep up with the volume of information transmitted between origin and destination points, use the network to determine the maximum number of...
Question 4 (a) The input impedance of a lossless air-core transmission line with characteristic impedance Ro. phase constant B and length I terminated in an impedance Z, is given by R,+Z, tan( i. Determine the length of an open circuit 50Ω line required to create a 0.1 nH inductor at a frequency of 10 GHz. (6 marks) ii. Determine the input impedance of the line in part () if the open circuit is changed to a short circuit. (3 marks)...
Question Four Total 25 Marks 4 marks (i) Distinguish between Type I and Type Il errors in hypothesis testing (i) Nineteen employees working in the call centre of a bank were chosen at random from the workforce and agreed to assist in the assessment of two different training programmes (A and B).Each employee was then given a performance score (measuring a range of aspects of their work) expressed as a mark out of a possible maximum of 100. The results...
A long, lossless, three-phase transmission line is operating with 60 Hz with a nominal voltage of 400 kV. The distance between sending and receiving sides of the line is 350 km and the line’s series inductance and shunt capacitance per length per phase are 0.92 mH/km and 0.016µF/km, respectively. If the line delivers 667.2461 MW at 400 kV with unity power factor at its receiving side, what would be the line-line voltage magnitude in the middle of the line?
1. Are £i and C2 skew lines? Explain your answer and find the distance between them if they are skew lines. 3 marks 2. Let S be the region given by S-((z, y) E R: z2 + y2 4,z? + y2-4y2 0,#2 0, y 20} 1 mark (a) Sketch the region S; (b) Consider the change of variables given by u2 , a2 +y-4y. Describe the region S as set in terms of the variables u and v. Call this...
Hi can you please show how you get the answers using the long way just so I can see how you worked it out even if you can label which properties you've used Thank you 1. (a) (i) A student claims that if p and q are odd integers then the evaluation of the expression (p 1)(g2 - 1) will always be a multiple of 8. Give 3 numerical examples you would 2 marks) 3 marks) use to check this...
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