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Power distribution- Question: 02 (a) Why bundled conductors are used? (E1) (5 Points) (1.5 Points) (b)...
Problem 2 A 1.5 volt energy source is to used to power a 5 volt, 1 amp load. A buck-boost converter is used for this application. A suitable transistor is found with an on-resistance of 35 mQ, and a Schottky diode is found with a forward drop of 0.5 volts. The on resistance of the Schottky diode may be ignored. The circuit is shown in the following figure. 1 A 100 HH 5 V Load 1.5 V DT T f,...
Question Part Points Submissions Used 1 –/1.5 0/5 Total –/1.5 This question has some parts which are scored using special conditions. Question Part 1: A deduction of 10% of the points for this question will be subtracted for each submission used beyond 2. A quantum simple harmonic oscillator consists of an electron bound by a restoring force proportional to its position relative to a certain equilibrium point. The proportionality constant is 8.63 N/m. What is the longest wavelength of light...
Problem1 In the concentric spherical conductors system shown in Figure 1, the inner conductor has positive charge-q and radius a. The outer conductor has radius b a) Using Gauss' Law determine the electric field vector E(r) in the region between the conductors (acrcb) and the potential difference Vab between them. b) Calculate E(r) and Vab if the two conductors have a 30 mm, b-40 mm, q 10uc, r-35 mm ε,-8.85x10-12C3(N.m2. For the circuit shown in Figure 2 find: a) the...
Problem 3 a- List five different transformer types used in the electric power system. [5 points] Consider a three-winding transformer, as shown in Figure 1, with the following particulars Ze 0.01+j 0.08 V2-440 z,= 0.01 tj 0.08 2-100/-25 Z- 0.01 +j 0.08 s-80/-35° Assume that V2 is the reference phasor, calculate: (a) The intermediate voltage Vo (3 points) (b) The primary current l and the primary voltage V. (3 points) (c) The tertiary voltage Vs referred to the primary side....
Question 2 1. Two perfectly conducting cylinders ra and rb form an inductor of length d, as shown in the figure below. The total current I flowing on the surface r-α of the inner cylinder is returned through the outer conductor r - b. The medium between the two conductors has magnetic permeability m a) Find the magnetic field intensity H everywhere, disregarding "edge effects" (i.e. assuming that the a, b and hence, it can be considered as infinite) length...
dwelling un 4. Type NM-B Cable enters a metal device box and is secured by a cable clamp at the bottom of the box. The cable is installed so the cable jacket extends "1/4 in. (6 mm beyond the cable clamp and free conductors begin at the end of the cable jacket a shown in Figure 1.39. If the device box has a depth of 3.5 in. (90 mm), the minimum permitted length of free conductor in this box is...
Question 4 (10 points) Solve for the node voltage V, shown in figure 4. -i5 2 1092 V w 20/90° 8 +j102 ) 10/0° Figure 4 Question 1 (10 points) a) Find the the voltages v/ , V, and vz for the circuit shown in figure 1. (2.5 points per node) b) Find the power delivered to the 10 22 resistance. (2.5 points) - M " 5 92 3.5 A 2. 53 3100 24 Figure 1
PROBLEM 5 a Discuss the consequences of short circuit faults on electric power systems [5 Points Protective schemes are routinely used for electric power transformers. Name at least three different types of transformer protective schemes (by function) and explain briefly their principles of operation. [5 Points] Consider the system shown in the single-line diagram of Figure (4 per unit to the same base. Assume that the voltage at both sources is 1 p.u .) All reactances are shown in ind...
can you calculating this question and explain why? thanks A distribution network shown in Figure 3 consists of a 40-MVA and 33/22-kV step-down transformer with a reactance of 10% and two distribution lines each having a reactance of 5 Q2. The load connected to each bus is also shown in the figure. The CO-8 overcurrent relays are used to protect the system. The time-current curve of the CO-8 relay is shown in Figure 4 on page 5. Assume that the...
QUESTION 5 (15 points) a. You have a power supply which is a full-wave rectifier with a capacitor filter. It operates from the mains and provides an output of Voc-20 V with 20% ripple, when the load current is 2 A Calculate the maximum and minimum values of the output waveform of this power supply. b. Now you will design a series voltage regulator between the power supply described in part (a) and an electronic device operating at 12 VDC...