*For #1 and #2, the 1. Given the figure below, find the following: distance is 1m a. What is the electric force of each electric charge? b. What is the net electric force at q3? 9.
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- Discussions:Voltage Distribution and String Efficiency of a Model Suspension Insulator 1- Comment on the results obtained.2- Give reasons for unequal potential distribution over the string.3- What is the effect of this un equality on the insulators?4- Can value of the string efficiency being equal to 100%. Explain your answer.5- Outline methods used to equalize the potential across the units.6- Why an insulator is represented as a capacitor C? What are the assumptionmodes?Q1 For the figure shown below answer allthe following 1. Justtell without the details , how muuch work does t take to move a charge a long an equipotential ine from point ato point b ? S 3y fthe potentials are 50v, 15v, 30v. How much Va, VA, VI? And Why? 1£Va = 90v How much Vb2 And why? And how much the potential difference Vcd on the first equipotential line? FH 4.Question 4Water flows down a waterfall from a height of 100m at a rate of 1000m3/minute. Assuming the water does not exchange energy with its surroundings within one minute. Calculate the following;(a)i. The potential energy of the water at the top of the falls with respect to the base of the fall. ii. The kinetic energy of the water just before it strikes the bottom of the falls.iii. The exchange in energy after the water reaches the bottom of the falls(b) What are the three major advantages & disadvantages of a steam turbine?(c) What are the methods of improving efficiency of Brayton cycle?
- A 30-volt electromotive force is applied to an ??-series circuit in which the inductance is 0.1 henry and the resistance is 50 ohms. Find the current ?(?) if ?(0) = 0. Determine the current as ? → ∞.In a design task, a wire of 2000 m requires to exhibit a voltage drop of 2.5 Vwhen 3.2 A of current passes though it. Based on the Table Q1 (b) below, inyour opinion, which of the wire is the most suitable for aviation when the fuelsaving is another factor to be considered as well.A certain lead acid storage battery has a mass of 30 kg. Starting from a fully chargedstate, it can supply 5 amperes for 24 hours with a terminal voltage of 12 V before it is totallydischarged.a. If the energy stored in the fully charged battery is used to lift the battery with 100-percentefficiency, what height is attained? Assume that the acceleration due to gravity is 9.8 m/s2and is constant with height.b. If the energy stored is used to accelerate the battery with 100-percent efficiency, whatvelocity is attained?c. Gasoline contains about 4.5 x 107 J/kg. Compare this with the energy content per unitmass for the fully charged battery.
- 4- Can value of the string efficiency being equal to 100%. Explain your answer.5- Outline methods used to equalize the potential across the units.6- Why an insulator is represented as a capacitor C? What are the assumptionmodes?Answer the following point in detail and rigorously. Instead of resorting to formulas, develop from basic principles (laws of voltages and currents, definition of electrical power, among others). a) What meaning would you give to the P consumed by an element? Which to Q?For the figure attached, a. what is the relations hip between voltage and current? b. does the temperature have any affects on the relationship between voltage and current? if yes, how will the resistance be affected?
- "What is the initial resistance of a material in ohm, given: 23 ohms as the final resistance, 250C and 480C as the initial and final temperature and 0.00456/0C as the temperature coefficient of resistance of the material at 480C?"How does the power, P, dissipated by a resistor depend on the indicated parameter (resistance, R,of the resistor, or the voltage or current of the supply) for each of the following scenarios? I amlooking for a mathematical equation for power as a function of the indicated parameter followed bya description of the dependence - does the power increase, decrease, remain the same or some otherdependence, as the parameter is increased? (and if other, describe.) If it is increasing or decreasing,by what factor does the power change if the parameter is increased by a factor of 3?(a) Constant R, powered by ideal voltage supply (We will examine real batteries that have internalresistance in class and the next homework.) How does P depend on the voltage, V, of thesupply?(b) Constant R, powered by ideal current supply. How does power depend on the current I?(c) Ideal battery operating at a fixed voltage, powering a variable resistor R. How does P dependon the resistance, R, of the resistor?(d)…A battery of emf 30.0 V is connected to a switch, an inductor of inductance ? = 0.600 ? and two resistors, R1 = 10.0 ? and R2 = 6.00?. The switch is initially open. A. What are the values of currents ?1, ?2, ?3 just after the switch is closed? (Just give an answer) ?1 = ?2 = ?3 = B.)Which point, a or b, is at higher potential or are they at the same potential, just after switch S is closed? (Just give an answer) C. What is the value of current ?1 through the battery a long time after the switch is closed? Show your work and briefly explain your logic