Research Final Draft

Electrie Battery is a device that stores chemical energy andtransforms it to electrical energy16. Resistors are electrical components that helps the Now ofelectrical current in an electronic circuit.17, Electron current flow is a current flow from the positive terminalto the positive.18, Gauss' s Law states that the total electric Nux out of a closedsurface is equal to the charge enclosed divided by Eo.19. Electric Potential Energy is the energy that is needed to move acharge against an electric field.20. 8 is called the permittivity of free space.

Answer true or false. (a) Matter is divided into elements and pure substances. (b) Matter is anything that has mass and volume (occupies space). (c) A misture is composed of two or more pure substances. (d) An element is a pure substance. (e) A heterogeneous mixture can be seperated into pure substances, but a homogeneous mixture cannot. (f) A compound consists of elements combined in a fixed ratio. (g) A compound is a pure substance. (h) All matter has mass. (i) All of the 118 known elements occur naturally on Earth. (j) The first six elements in the Periodic Table are the most important for human life. (k) The combining ratio of a compound tells you how many atoms of each element are combined in the compound. (l) The combining ration of 1:2 in the compound CO2 tells you that this compound is formed by the combination of one gram of carbon with two grams of oxygen.

A three-axis stabilized satellite has two solar arrays. Each array has an area of 5m². At the beginning of life each of the solar sails generate 4kW of electrical power, which falls to 3.6 kW at the end of the satellite's useful lifetime. 1 kW of power is needed for housekeeping (running the satellite systems) and 3 kW is devoted to the telecommunication system. a. Calculate the efficiency of the solar cells at beginning of life. Assume an inci- dent solar power of 1.36 kW/m2, and normal incidence of sunlight on the sails. b. Caleulate the efficiency of the solar cells at end of life. E lfone of the solar sails fails and produces no power, how much power is avail- able to the telecommunication system.

Estimate the dielectric losses in the solid specimen subjected to an alternating field of 40KV/cm, has an absolute permittivity of 4.445 x10-11 and the loss angle of that solid dielectric material is 0.28647at Oman power frequency. And also the same specimen while subjected to 3 KV/cm DC supply with the resistance value of 10 Mega Ohm, then determine the heat generated in the specimen.

Discuss the following statement “Since technology is evolving at an exponential pace, existing laws and statutes can’t keep up with the rate of change”

The leaf of a corn plant has a resistance of 2.0M Ohms, asmeasured between two electrodes placed 30cm apart along the leaf. The leaf has a width of 3.5cm, a thickness of 0.2mm, and a length of 40cm. Its top & bottom surfaces are shaped like flat plates. The fluid within the leaf is mostly water. What is its capacitance? A) 8.85picoFB) 0.049 micro FC) 495600 FD) 80F

Oil flows full bore at a velocity of 2 m/s through a nest of 16 tubes in a single pass cooler. The internal diameter of the tubes is 30mm and the density of the oil is 0.85 g/li, Find the volume of the low in liters per second. 3. a) 20         c) 22      b) 21         d)23

TOPIC: Power Systems, Power Plants & IlluminationINSTRUCTIONS:- Answer in this format: Given, Illustration, Required Conversion, Solution, Final Answer.- Step-by-step solution, do not skip even simple calculations to avoid confusion.- If answered in written form, make sure it is readable.PROBLEM:A lamp of 500 cd is placed at the center of a room, 20m x 10m x 5m. Calculate the illumination (in lux) for each corner of the floor. 0.98 0.78 0.81 0.83

State which of the following statements are true and which are false. Give reasons for youranswers.a) A very simple circuit consists of a battery connected across a resistor. In this circuit, thebattery and the resistor are both in series and also in parallel.b) A resistor R and a capacitor C connected in series combine as 1RC =1R +1Cc) Natural uranium is not radioactive until it has been processed by enrichment for use infission reactors or bombs.d) Infrared light is more likely to cause electrons to be emitted from a metal than ultravioletlight.e) Special and General Relativity effects both matter for the operation of GPS, the former slowing down the clocks on GPS satellites relative to clocks on Earth and the latter speedingthem up.

Many have witnessed the use of an electrical megaphone for amplification of speech to a crowd. A model of a microphone and speaker and the circuit model are shown. Find v(t) for vs = 10sin(100t)u(t), which could represent a person whistling or singing a pure tone. Answer: (1.55 e−0.6t−1.55 cos100t + 0.279 sin100t)V

a parallel plates capacitor . the area of the one of ite plates A=5cm2 and the distance between them d=2mm , if the voltage difference is 10 V , calculate : a- the electric field between the plates E b- the surface density charge σ c- the capacitance C d- the charge on the plates Q

Solve only c,d Use the following constants if necessary. Coulomb constant, k = 8.987×10^9 N⋅m^2/C^2 . Vacuum permitivity, ϵ0= 8.854×10^−12 F/m. Magnetic Permeability of vacuum, μ0 = 12.566370614356×10^−7 H/m. Magnitude of the Charge of one electron, e = −1.60217662×10^−19 C. Mass of one electron, m_e = 9.10938356×10^−31 kg. Unless specified otherwise, each symbol carries their usual meaning. For example, μC means microcoulomb .

Regional Maritime University (RMU) campus has 200 classrooms and 400 faculty offices. The classrooms are equipped with 12 fluorescent tubes, each consuming 110 W, including the electricity used by the ballasts. The faculty offices, on average, have half as many tubes. The campus is open 240 days a year. The classrooms and faculty offices are not occupied an average of 4 h a day, but the lights are kept on. If the unit cost of electricity is GH₵ 0.082/kWh, determine how much the campus will save a year if the lights in the classrooms and faculty offices are turned off during unoccupied periods.

A 8-volt battery is applied across a certain parallel-plate capacitor. If the capacitor was able to store 1.59 joules, determine the distance (measured in picometers) between the two plates of the capacitor. Both the plates have an area of 0.85 square meters. Express your answers accurate to four decimal places, whenever applicable. Assume the dielectric used for the capacitor has relative permittivity 1.83. Use the permittivity of free space to be 8.854 × 10-12 F/m.

Solve only a,c & d Use the following constants if necessary. Coulomb constant, k = 8.987×10^9 N⋅m^2/C^2 . Vacuum permitivity, ϵ0= 8.854×10^−12 F/m. Magnetic Permeability of vacuum, μ0 = 12.566370614356×10^−7 H/m. Magnitude of the Charge of one electron, e = −1.60217662×10^−19 C. Mass of one electron, m_e = 9.10938356×10^−31 kg. Unless specified otherwise, each symbol carries their usual meaning. For example, μC means microcoulomb .

Signals and systems course. Please solve and send asap.

An open–wire transmission line is made from two wires, each with a diameter of 2 mm, located 20 mm apart. Calculate the characteristic impedance of the line. No need for a solution. Just write your numeric answer in the space provided. Round off your answer to 2 decimal places.

I need help with these questions its from Communication systems Lab no.11 (FM demodulation)

An energy meter is designed to make 100 revolutions of the disc for one unit of energy. Calculate the number of revolutions made by it , when connected to a load carrying 40 A at 230V and 0.4 p.f. for 1 hour. If it actually makes 360 revolutions, find the percentage error.

U-238 undergoes nuclear fission by high energy neutrons. Select one: True False

Electrical transfomer is a rotating device used to generate electricity Group of answer choices True False

DEGREE: ELECTRICAL ENGINEERING SUBJECT/COURSE: INDUSTRIAL ELECTRONICSTOPIC: TRANSFORMERS NOTE: Please solve in this way. 1. Please have a good handwriting, some of the answers are not readable. Thank you!2. GIVEN. (Include symbols and units)3. ILLUSTRATION (Required).4. Step-by-step SOLUTION with Formulas and Symbols. No Shortcut, no skipping, and detailed as possible5. FINAL ANSWERS must be rounded up to two decimal places with corresponding unit. PROBLEM:An 80:5 current transformer is connected to a 5-amp ammeter. if the latter reads 3.65 amp, what is the line current?

answer problem #1 write your solution on any peace of paper tnxxxxxx

A single energy meter has a meter constant of 200rev/kwh. When supplying a non-inductive load of 4.4 A at normal voltage, the meter takes 3 minutes for 10 revolutions. Find the percentage error

Kindly answer the following question (as soon as possible). Provide a COMPLETE and CLEAR solution. #2

1/ The Arc Resistance increases as the cross-sectional area of the arc increases. Select one: True False

Please provide solution and show the complete answer

1) BP = [5,3,2]T . The A and B coordinate systems are initially overlapping. According to the X-Y-Z Fixed Angle System, the following operations are performed respectively. Calculate the AP. (A, Fixed Axis Set, B Moving Axis Set)       1- It is rotated 60 degrees around the Z axis.     2- It is moved along the X, Y, Z axes [3, 2, 5].     3- It is rotated 30 degrees around the Y axis.   this question is an introduction to robotics.

9. A university campus has 200 classrooms and 400 faculty offices. The classrooms are equipped with 12 fluorescent tubes, each consuming 110 W, including the electricity used by the ballasts. The faculty offices, on average, have half as many tubes. The campus is open 240 days a year. The classrooms and faculty offices are not occupied an average of 4 h a day, but the lights are kept on. If the unit cost of electricity is $0.11/kWh, determine how much the campus will save a year if the lights in the classrooms and faculty offices are turned off during unoccupied periods. Draw a figure or FBD that will support the problem. Explain each step by step formula.

Determine if the systems given below are Static or Dynamic, Causal or non-causal, Linear or non-linear, Time-invariant or time varying and Stable or unstable. 2. Y2(n)=x(n)+nx(n+1)

b. A coaxial cable has inner radius of 1.2cm and outer radius of 1.8cm and has a length of 35m with an insulating material with relative permittivity 4.5. Calculate: i. Capacitance per meter. ii. Total Energy stored in the cable if a potential of 400v is applied across the cable.