World's Largest Electric Light Bulb

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Facts all about the world largest, longest, biggest, and tallest bulb. Imagine if we have this in our home maybe we cannot afford to pay the monthly electric bill because of the high wattages.


World's Largest Light Bulb
The Thomas Edison Memorial Tower and Menlo Park Museum was built in 1937 to mark the "Birthplace of Recorded Sound" in the Menlo Park section of what is now the town of Edison.



Tallest Light bulb of Thomas Edison
It sits on top of the 117-foot concrete Memorial Tower, which was built in 1937 by Edison’s employees. It’s an homage to both the light bulb and another key Edison invention, the phonograph.A monumental replica of Edison’s first practical incandescent bulb, it’s nearly 14 feet of Pyrex glass segments.



Thomas Edison Longest Lasting Light Bulb
 Is the Centennial Light located at 4550 East Avenue, Livermore, California. It is maintained by the Livermore-Pleasanton Fire Department. The fire department claims that the bulb is at least 109 years old and has only been turned off a handful of times.



Worlds Largest Lamps
These two lamps were made by General Electric to commemorate the 50th and 75th anniversaries of the invention of the light bulb, and are 50,000 and 75,000 Watts respectively. General Electric made this light bulb in celebration of the Golden Jubilee. the 50th anniversary of the invention of the Edison incandescent lamp.

Free Relay Substation Guide

Electric Power Systems Cyber Security
The aim of this case study was security analysis of a software interlocking system consisting of mutual interlocking disconnectors, circuit breakers and earthing switches to assure safety of switching operations carried out in a substation during operation and maintenance of the substation.


Relay Protection and Substation Automation
Of Modern Power Systems, the coordination function for the load resistance vectors with the help of load encroachment in the distance protection characteristic’s resistance area. However existed methodical directions for the load encroachment setting calculation do not take into account all the possible worst conditions for the 330 kV transmission network.


Reliability of Substation Protection System
Although the wide use of microcomputer relaying and integrated substation automation system in China has improved operation reliability, there are still many problems in substation protection system, for example, the complex insulation of conventional transducer


Protection and Power System Utilization
In the areas of power system automation and substation automation, there are two parallel trends in different directions: centralization and decentralization. More and more functions are moved from
local and regional control centers toward the central or national control center. At the same time we also observe more and more “intelligence” and “decision-power” moving closer toward the
actual power system process.


Control, Protection and Access to Information
Describes a system concept for integrated control, protection, condition monitoring, condition supervision, asset management and outage management system, which assures higher availability of plants and enhancement of the overall utility performance.


Using Microprocessor Relays
A subsstation is a complete, self contained substation designed to supply a single distribution circuit. Each substation consists of a power transformer
ranging in size from 1000 to 2500 kva and a dedicated low side circuit breaker to provide feeder protection and contrl.


How to Draw a Sequence Diagram
A sequence diagram has two dimensions: the vertical dimension represents time and the horizontal dimension represents the objects participating in the interaction. Time flows from top to bottom. Objects (or classifier roles, more generally) are shown as vertical lines (called lifelines) and messages as horizontal arrows extending from a sender object to a receiver object.

Free Download Relays Standard Device number

Protective Relays & SCADA Systems
Aim of this standard is to arrive at a complete communication solution for substations, thus providing users with interoperability among different makes on the basis of Ethernet technology.


Numerical Protection Relays
The goal of this standard is to achieve an object-oriented communication structure within substations.
SIPROTEC protection relays and bay control units are the first to feature the IEC 61850 standard.With the substation configurator, a part of DIGSI 4, SIPROTEC units as well as other makes can be configured in accordance with IEC 61850.


ANSI Standard Device Numbers
The system uses numbers 1 through 99. Some numbers are left blank for assignment to special functions which may be used within a particular company.This numbering system will be employed on: One-Line Diagrams, Three-Line Diagrams, and Control Schematics



Peculiarities of the relays intended
Parameters of the subminiature electromagnetic relays used as output elements in microprocessor relay protection, do not correspond to technical specifications on these relay protection. The reasons of this discrepancy are analyzed.the switching capacity of relay contacts is determined by the area of contact surface, contacts mass, contact force and contact gap.


IEEE (ANSI) Device Number 16
In electric utility and industrial applications, Ethernet local area networks (LANs) and wide area
networks (WANs) are being used for message transmission to carry out high-speed control and
protection.


1 to 99 ANSIStandard Device Number



List of Device Numbers
denote what features a protective device supports (such as a
relay or circuit breaker). These types of devices protect electrical systems and components from damage when an unwanted event occurs, such as an electrical fault


Facilities Instructions, Standard and Techniques
Relays and relay settings are not to be changed from what is indicated on current issues of relay data sheets unless authorized by regional or project personnel with the proper responsibility. A sufficient number of initial operations should be made by manually operating relay contacts to make sure that all devices which should be operated by the relay, function freely and properly, including auxiliary contacts and targets within the relay.


Relay symbols and device numbers
Protection relay The asterisk must be replaced by one or more letters or qualifying symbols indicating the parameters of the device



IEEE C37.2
Probably the oldest IEEE standard still in regular use. It was first published in 1928
as AIEE No. 26, and provided a language to describe “automatic substations” as well as other applications.



BE1-Numerical Relay System Features
For example, a time over current relay  is designated a 51 device, while an instantaneous overcurrent is a 50 device. Multifunction relays have  combination's of device numbers.


ANSI Standard
With explaination in each Device Designation. Used only for specific applications in individual installations where none of the assigned numbered functions from 1 to 94 are suitable, Auxiliary Devices

List of Electrical and Electronics Engineering project and experiment

Experiments with Electricity
how to make a battery out of money / how to make a battery out of potatoes, how to make yourself spark / how to light a fluorescent tube without connecting, how to make your tongue into a battery / how to test an electric fence, how to prove there is no black in a television picture / how to prove there is no white in a television picture, how to usual television has a strobe light / how to turn a presenter's face purple.


Electricity and Magnetism Experiment
Static Electricity, build a battery holder, lightning rod, a simple computer, switched circuit, parallel circuit.


Projects by students for students
The lemon experiment, The Voltaic pile, making an electromagnet, charger, some different experiments that teach about electricity that you can do at home. Nick's favorite experiment to do is the one involving lemons.


Surfing Scientist - PDF file
Students experiment with aluminium foil, batteries and cheap, readily availably low voltage light bulbs* to construct a simple conductivity tester. They use their conductivity testers to classify a range of materials as conductors or insulators.


A Quick Battery Holder
This is a quick way to hold wires to the terminals of a AAA or a AA battery for electrical experiments. Two modified clothespins are mounted to a 3/4" thick wood spacer. The clothespin springs maintain pressure on the battery terminals.



Experiments with Frictional Electricity
All the experiments and improvised apparatus work.
I will give details and then you can discover for yourself - a more fun way to learn because from your efforts come results that will stay with you.
As far as possible I will try not to say what happens - try it and see is the message.Do not try any mains or battery powered high voltage supplies.


How to measure motor parameters
In torque experiments one end of the string (heavy-duty thread) was taped to the axle, and the other end was attached to the top of a lever. The bottom end of the lever served as a pointer showing the angle on the dial. A lath was attached to the pointer end. Several holes in the lath were used for adding heavy bolts and nuts as weights to increase the lever resistance.

Free Pdf Electrical Question and Answer download

Electrical Engineering
Frequent problem with solution


Questions and Answers about Electrical Safety
The law also requires electrical permits before work begins and inspections before the work can be approved. These steps encourage quality work and consistent application of electrical laws and codes. The following questions and answers further explain requirements that promote electrical safety and protect people and property.


Electrical Machines II Short questions and answers
Why almost all large size Synchronous machines are constructed with rotating
field system type?

ELECTRICAL INSPECTOR EXAMINATION
Refer to the Electricity Act and state TWO classes of registered persons
who can be classed as a supervisor of electrical work.




Electrical Engineering – Answer ALL questions
The transient current flowing in an RL electrical circuit is a solution of the first order
differential equation


Ontario Electrical Safety Code
When does the new rules become effective?, Was grandfathering of the old rules permitted for applications that have been requested?,



NEC Question and Answer
An overcurrent device shall be connected at the point where the conductor to be protected
receives its supply,



Installing Photovoltaic Systems
This Question and Answer Guide for Solar Electric Systems addresses general considerations about photovoltaics (PV) technology and requirements for installing photovoltaic power systems, including building-integrated applications. Contained in this guide are commonly asked questions about the technology, and responses based on current state-of-the-art equipment and industry design practice.



Trailing Cable Electrical Problem
This mine utilizes 550 volt 3 phase equipment and has continuous miners. Femco ground
monitors are used.


Canada's New Electrical Safety Standard
How are AC and DC voltages addressed in the standard? What labeling of electrical panels is required, and where do I find the standard that references it?


Photovoltaics Question and Answer
What are photovoltaics?, How are photovoltaic cells made?,  Their universal appeal lies
in the fact that they generate electricity from the sun. Working photovoltaics have no moving parts, are relatively simple in design, need very little maintenance, and are environmentally benign.

Electrical Board Exam Results

Time has bye and yet without noticed that we have a thousand and thousands of professional electrical engineer(PEE), Registered electrical engineering(REE) and Registered Master Electrician in the philippines and maybe millions on the planet earth. In this article I would
Collect the useful links by year and months so that we could just do search easily the top 10, the total no. of examinees who pass and etc.. We know that PRC is the agency in charge of the professional sector and they play an important role to provide the development of the professional industry also a public services. So, I will always update this articles every time I found in the search engine the most latest and past exam results and please don't hesitate to do a comments if you have something to add thanks and God Bless us all.


November 2010 (Middle East)
40 out of 137
88 out of 185
Board Examinations given by the BEE in: Abu Dhabi, United Arab Emirates; Al-Khobar and Riyadh, Kingdom of Saudi Arabia and in Doha, Qatar


September 2010
913 out of 2,686 
529 out of 1,456
Licensure Examinations given by the Board of Electrical Engineering.



May 2010
3 PEE
457 out of 1,611 REE
539 out of 1,408 RME in Manila, Baguio, Cagayan De Oro, Cebu, Davao, Iloilo and Legazpi



December 2009 (Middle East)
79 out of 281


September 2009
1,101 out of 2,613
13 2009 licensure exams


September 2008
1,317 out of 3,552 passed the REE Licensure Examination given by the Board of Electrical Engineering


May 2009
527 out of 1,497
465 out of 1,120
2 out of 2 PEengineer


September 2008
938 out of 3173


May 2008
705 out of 2,494 passed


December 2007 (Middle East)
18 out of 133

The members of the Board of EE who gave the licensure examinations are Engr. Fortunato C. Leynes, Chairman; Engr. Jaime V. Mendoza and Engr. Francis V. Mapile , Members.