CONSTRUCTION OF ELECTRICAL REMOTE CONTROL MOTOR CARPREPARED BY: Soyombo oluwajuwonlo gabriel 2018702030240Sangodoyin ajibola mujeeb 2018702030237Sowunmi sunday Joseph 2018702030239Sunmonu akinkunmi quadri […]
Vc = (3 × 10⁶)/√2 • r × inD/r where D is the spacing Conductor and r is the radius
What is receptacle and Block diagram in Electrical graphics What is receptacle in electrical graphics: Receptacle is an opening of
Part of the solutions for electrical maintenance and repair.
Four service methods that can be used to detect faults in electronics equipment. ( 2 marks)
A series circuit having R= 40 ohm, and inductance of 0.3H suddenly connected across a 150V supply through a switch.
WHAT’S THE FUNCTION OF FOCUS ADJUSTMENT AND ELECTROSTATIC FOCUSING IN MONOCHROME TV The domestic television receiver is required to receive
1 PIN TYPE INSULATOR: Are made in piece up to 25KV and above for up to 50KV only. You can add up the voltage by adding one more piece, they become uneconomical for higher voltage
acceleration due to gravity= 9.81m/s2 Head= 300m Efficiency rate= 75% Velocity= 63000kg/s P= ghrv P = acceleration due to gravity
QUESTION ONE The four parameters that determine the performance of a transmission line is conductance, resistance, inductance and capacitance.
2011/2012 list five (3) advantages and three (3) disadvantages of a hydro power plant. Answers(1) Renewable: hydro-electric energy is renewable,
WIDE AREA NETWORK WAN]:Wide area networking combines multiple LANs that are geographically separate. This is accomplished by connecting the different
Electrical circuits utilize two primary systems: single-phase and three-phase. Single-phase circuits, the older of the two, involve current flow through
Key learnings: To derive the relations between line and phase currents and voltages of a star connected system, we have
Key Concepts in Electric Power: Complex Power Complex Power: A crucial concept. In a single-phase network, voltage (V) and current
Vector Diagram of Transformer: An Essential Tool for Fault Analysis Key learnings: Transformers utilize electromagnetic induction to transfer electrical energy
With the aid of a diagram state the principle of operation of cathode ray oscilloscope Principle of Operation of a
ELECTRONIC VOLTMETERS A significant improvement in performance can be realized when a meter is driven by an amplifier. The amplifier
Protective Relays Protective relays are essential components of electrical power systems, designed to detect and isolate faults, thereby safeguarding equipment
Define and explain diversity factors Diversity factors are a concept used in various fields, primarily in electrical engineering and social
Discuss the following method of locating underground fault in cable Fault Location Techniques for Underground CablesUnderground cables are susceptible to
Be a successful engineer Here’s a detailed note on how to be a successful engineer: Engineering is a rewarding and
Salient Pole: A salient pole is a type of magnetic pole used in electrical machines, particularly in synchronous motors and
ELECTRICAL ENGINEERING Electrical engineering involves exploring and utilizing the concepts of electricity, electronics, and electromagnetism. Essentially, it delves into comprehending
Are you looking for a new skill or a job to learn in this new world, please let that choice
B What is Data Communication? Data communication refers to the exchange of data between a source and a receiver via form
SIGNALS Signals is a physical quantity or an electrical waveform that carries information. It can also be define as a
Introduction to Fault analysis in power system A fault is any abnormal condition in a power system. The steady state
What is signal Signals is a physical quantity or an electrical waveform that carries information. It can also be define
This entails a quick summary of what Drafting and design course is all about in electrical engineering. As a student who’s interested in Drafting and design course, it’s advisable you go through this.
What are the different special purpose of transformer? You can use transformer as; What is reactor? Reactors are equipment of
CHAPTER ONE INTRODUCTION The off-grid system term states the system not relating to the gird facility. Primarily, the system which
This project work covers only the assemblage of a solar battery with charge controller for the regulation of current and voltage coming into the battery bank. The design takes into cognizance of the fact that the charge controller is a Maximum Power Point Tracking (MPPT) charge controller which is more efficient..
The aim of constructing this system is to put in place a formidable locker security system with low cost and free of errors. Keywords – RFID Reader, Atmega328p, Keypad, LCD, Buzzer. The security system plays a significant role to keep out unknown users to access protected physical and logical places with no permission. Furthermore, unwanted people can hack the lock and have access to the protected place. It can further be use for smart cart can be interfaced with wireless technologies to make it completely portable in the nearest future.
DESIGN OF A SOLAR POWERED MOBILE PHONE CHARGER
A PROJECT REPORT SUBMITTED TO THE DEPARTMENT OF ELECTRICAL ENGINEERING IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE AWARD OF
Magnetic flux is the surface integral of the normal components of the magnetic field B over that surface. It is
The technical report contains a detailed explanation of the Student Industrial Work Experience Scheme(SIWES), the Transmission Company of Nigeria(TCN), Papalanto Works Centre, the variuos departments in the company including the departments I worked under my four months industrial training and the problem encountered during my Industrial placement.
Differentiate between conduit and surface wiring by enumerating the tools and consumable materials used in each system No Conduit wiring
Define the following terms; State two advantages and disadvantages of ELCBMerits Merits of steel conduit wiring systems List two advantages
State lenz’s law and faraday’s law of electromagnetic induction Lenz’s law states that the direction of an induced electromotive force
What is an automatic gain control?It is a closed loop feedback regulating in an amplifier or chain of amplifiers, the
Single phase supply Three phase supply In a single phase supply, it power is supplied through two wires. It is
What is an adjacent channel interference (ACI)? ACI may be caused by inadequate filtering, improper tuning and poor frequency control
DEPARTMENT OF ELECTRICAL ENGINEERINGSECOND SEMESTER EXAMINATION 2016/2017 ACADEMY SESSION COURSE TITLE: ELECTRICAL AND ELECTRONIC INSTRUMENTATION 11COURSE CODE: EEC 216. CLASS:ND11TIME
CIRCUIT THEOREM EEC 222 A resistance of 40Ω, inductance of 0.4Hz and capacitance of 200µF are connected in series and
Synchronous speed Rotor speed when slip is 4% Rotor frequency (5 marks) SOLUTIONI) Synchronous speed = f/p = 50/2 =
ENUMERATE 5 (FIVE) MAINTENANCE PROCESSES OF A BATTERY. (5 marks) Batteries should be kept neat and clean to increase the
resistors of resistance R₁, R₂ and R₃ are joint together, they’re said to be connected in series. It should be noted that;
The current through a series circuit is the same all over ( I.e I=i₁=i₂=i₃).
The voltage drop across each resistor is different depending on its resistances
The applied voltage (Vs) is equal to the sum of the Potential difference across each resistor. (i.e Vs = V(R₁) + V(R₂) + V(R₃) or V = V₁ + V₂ + V₃
Where Vs = IR; V₁ = IR₁; V₂ = IR₂; V₃ = IR₃
IR = IR₁ + IR₂ + IR₃
⇒(equivalent resistance), Req = R₁ + R₂ + R₃
For n resistors connected in series, the equivalent resistance
Req is given by Req
At the end of this post, you should be able to; State Joule’s law Solve problems involving Electrical energy and
Instruments used in the workshop should be properly insulated for the available voltage to prevent electric shock.
2. Workshop floor should be free from grease, oil and water to prevent electric workers from falling or stumbling and getting injured.
3. First aid must be available and equipped in the workshop.
4. Safety boots should be worn to prevent electrical hazard
5. The passage way to the workshop should be free from obstruction to allow free movement of workers.
6. Protective
Absolute permittivity of a medium
μ = Absolute permeability of a medium
E = EoEr and μ =μoμr
Eo = Absolute permittivity of free space and Er = relative absolute permittivity
μo = Absolute permeability of free space and μr = relative absolute permeability
For magnetic material V = √(1/LC)
V = √[1/(μo/2π • inB/A × 2πEo
Buffer system malfunction message means what?A) The label is cut offB) The Buffer system is too tensionC) The label is
Which of the factors listed below is not considered when selecting the types of conveyor chains and components to be
Mutual inductance: This is when the magnetic flux of two or more inductors are linked up together in that the
1. A frequency determining circuit in an L-C sinewave oscillator consist of a high Q inductance L = 200μH in
A string of suspension insulator consist of 3-units, the capacitance between each link pins to earth is one-sixth of the
What is an Oscillator? The oscillator is a mechanical or electronic device and the working principle of the oscillator is, the periodic
A 500/200v single phase transformer has primary resistance of 0.5Ω and reactance of 3.7Ω, while the secondary resistance and reactance
MACHINE (WORK 1) (A) M.A = F.R, M.A = load/effort or output force/input forceWhere F.R = force ratio(B) Velocity ratio
Course title: electrical power IIICourse code: EEC 222Class: ND2 full timeInstruction: Answer question one and any other threeTime allowed: 2
With the aid of a block diagram explain the working principle of a gas turbine power plant A gas turbine
WHAT ARE THE SIX CAUSES OF ACCIDENT ON LINE ONE(1) TO LINE EIGHTEEN (18) Poor house keeping: not properly arranging
What is electrical installation: it is an electrical wiring of cabling or fixing electrical equipment and other accessories such as
SHORT CIRCUIT TEST: The secondary is short-circuited through a suitable ammeter, A2, While a lot voltage is applied to the primary and adjusted to circulate full-load current in the primary and secondary circuit iron losses is negligible and wattmeter reading is that of copper losses in the windings [ iron loss a (flux)² applied voltage which is small about 1/30 of V1]
Constant Losses: The iron loss due to hysteresis and Eddy currents are constant at all loads because Flux variation between no load and full load is 2%-5%
Variable Losses: The copper loss depends on the load since variation of load from no load to full load is 100%.
REGULATED POWER SUPPLY it is the terminal voltage that will remains almost constant regardless of the amount of current drawn
CHAPTER ONE INTRODUCTION1.1 BACKGROUND OF STUDYElectricity could be said to be one of the greatest inventions of man. This is
Find the voltage V1 and V2 using kvl To Find V1 and V2, we’ll have to use ohm’s law and
CIRCUIT THEOREM 1. With a suitable diagram show the alternating current and voltage in a pure resistance are to phase.
ELASTIC PROPERTIES OF SOLIDS Young ModulusYoung Modulus, y is defined as the ratio of tensile stress to tensile strain.Y =
To obtain the coefficient of static friction, µ, the angle of inclination of the plane, , is slowly increased until the block just begins to slide down the plane. At this point, the parallel component of the weight, W sin acting downwards along the plane is equal to the limiting frictional force, F = µR acting upwards along the plane.
That is, F = Wsin ………………………………………….(1)
Or µR = Wsin
Also, on an inclined plane, the normal reaction R is not equal to the weight, W, but to the perpendicular component of the weight, Wcos
That is R = Wcos ……………………………………………(2)
Combining equation (1) and (2),
ABSTRACT
This project is based on fabrication of metal door. A metal door is a movable structure used to close off an entrance typically consisting of a panel that swings, slide or rotate.
This metal door more reliable and strong and has much good working appearance than other doors like, wooden door, glass door, leather door and so on. Various fabrication processes such as marking out, cutting, bending, joining or welding, grinding, spraying and so on were adopted and implemented in the fabrication of this twin leaf metal door, peep hole was fixed on the door to screw visitor and admit on choice, the main purpose is to ensure safety and protection.
The material used to make this project to be a well strong design are as follows: galvanized metal plate, square pipe, lockset key, paint, hinges guage, 2electrode and grinding disk and the major reason of using the material is to provide good making features of the door which will meet up with now adays demand and designs, and in order to expose students on how to use different types of simple tools and some machines. The special features on the door are as follows, pinhole, lockset key, hinges small, square pipes, paint which is use to coat the door against rusting.
A 60Hz voltage of 280v effective value is impressed on an inductance of 0.356H. SolutionF = 60Hz, V = 280v,
An Electrical amplifier when first built has an open loop gain of 120 after a while due to ageingthis falls
(1) Answer True or False to the following questions QUESTIONS a. Both a spring balance and a chemical balance are
Solar panel BASIC PART THAT ARE REQUIRED FOR INSTALLATION 1.Solar panel Solar panels are those devices which are used to
STUDENT INDUSTRIAL WORK EXPERIENCE SCHEMEFROMOCTOBER 2020 TO FEBRUARY 2021 BYADEEYO ISLAMIYAT ADEJUMOKEMATRIC NO: 2015070501021TECHNICAL REPORTONSTUDENT INDUSTRIAL WORK EXPERIENCE SCHEME (SIWES)HELD
INTRODUCTION TO SIWES PROGRAM
SIWES which stands for Student Industrial Working Scheme was established by ITF in 1973 to solve the problem of lack of adequate practical skills preparatory for employment in industries by Nigeria graduates of tertiary institution.
The Scheme exposes students to industry based skills necessary for a smooth transition from classroom to the world of work. It affords the students of tertiary institution the opportunity of being familiarized and exposed to the needed experience in handling machinery and equipment which are not usually in
The student industrial work experience scheme (SIWES) is an essential programme that all students offering the following courses: Engineering, Mass
JFET and transistor amplifier questions on electronics III (EEC224) In a transistor amplifier, when the signal changes by 0.02v, the
What’s a thermistor? Is a type of resistor whose resistance is reliant on temperature. They’re made from metallic oxide which
USES OF CATHODE RAY OSCILLOSCOPE(I) A.C VOLTAGEIt’s used to determine an unknown a.c voltage(II) MEASUREMENT OF FREQUENCY.It’s useful in determining
How to convert from star to delta and delta to star in circuit theorem
Explain how to use an analogue multimeter(1) To test non-polarized capacitors.(2) To test NPN transistor.(3) to test Diode(4) To test
LIST FOUR (4) ADVANTAGES OF A TRANSFORMER. (4 MARKS) 1. It’s one of the economical devices to transmit electrical power
Find the value of a resistor with the following code.
1st band → brown
2nd band → black
3rd band → orange
4th band → silver
Solution V1 = 440v, V2= 110V, no load current = 5A, p.f = 0.9Cos theta = 0.9, theta = cos^-1
The three principles of electromagnetic machines are; → induction → interaction → Alignment Principle of Induction in electrical machine PRINCIPLE
