This invention was done by Free Flow, a team of five electrical and computer engineering seniors about to graduate from Northeastern University.

via Scene 360 Illusion

Arjun Says:

I am Arjun, I have attended the Power grid interview on 3-Nov-2008 at Bhubaneshwar. I like to share some of the questions that I have faced in the interview.

The Interview panel comprises a team of 6 persons, as this interview is for the post of AE to work under Rural Electrification projects in the states of West Bengal and Orissa, apart from the Technical skills they looked for knowledge in Hindi also. As the work comprises mostly of construction of Distribution sub-statation and Distribution of the supply. They very much concentrated on the Power systems and they also posed questions in the Power Electronics.

On an average the interview will go around half-an-hour as said earlier they looking for both Hindi and Technical skills in the Candidate. I am posting some questions here which I have faced in the interview. Hope it will be useful for the people who are atteninding the interviews.

1) What is a Triode? What are its uses?
2) What is a Triac?
3) What is a Thyristor?
4) What is the HVDC Transmission System?
5) What are the conditions applicable to lay an HVDC Line?
6) Does Conveter and Inveter has same ckt? Explain.
7) Why do we use only Sinusoidal Wave in AC supply why not the Square,Triangle or Sawtooth etc?
What constraints regarding the HVDC Transmission System?
9) Explain the Local Distribution System?
10) What are the different types of transformers present in the Transmission and Distribution system?
11) How would you supply a single house hold load from a 3-phase supply coming out of a sub-station?
12) How would you supply power to a village which is very far from a sub-station and has only a 11kV line running near by?
13) What are the important structures of a local Distribution System?
14) Name any Five Major Rivers of country?( we should answer in Hindi)
15) Name the Person who became President of India from A.P?(In Hindi)
16) Name the Person who became P.M of India form A.P? (In Hindi)
17) Name the Famous Power Plants present in A.P? (In Hindi)
18) Are you willing to work in the rural Areas of Orissa?

They may ask question on your native place,name,college etc., to test our language skills and confidence levels in answering it.

Thank you Raju for giving  me this oppurtunity, hope in future I can contribute more for this site.

Regards,
Arjun

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Electric Circuits:

Network graph, KCL, KVL, node and mesh analysis, star/delta transformation; electro-magnetic induction; mutual induction; AC Fundamentals; harmonics, transient response of dc and ac networks; sinusoidal steady-state analysis; resonance; ideal current and voltage sources; Thevenin’s Norton’s Superposition and Maximum power transfer theorems,. Two port networks, z parameters, y-parameters, three phase circuits, power measurements;

Electrical Machines:

Single phase transformer- equivalent circuit, phasor diagram, tests, regulation and efficiency; three phase transformers-connections, parallel operation; auto-transformer; DC machines-types, windings, generator/motor characteristics, armature reaction and commutation, starting and speed control of motors; three-phase induction motors-principles, types, performance characteristics, starting and speed control; single-phase induction motors; synchronous machines-performance, regular and parallel operation of generators, motor starting, characteristics and applications

Power Systems:

Basic power generation concepts; transmission line models and performance; underground cables; string insulators; corona; distribution systems; per-unit quantities; bus impedance and admittance matrices; load flow; voltage control; power factor correction; economic operation; symmetrical components; fault analysis; current limiting reactors; principles of over-current, differential and distance protection; protection of alternator, transformer, transmission lines, neutral earthing, solid state relays; circuit breakers; system stability concepts, swing curves and equal area criterion;

Utilization, Electrical and Electronic measurements:

Heating-resistance, induction, dielectric; welding-spot, seam and butt; electric traction-speed-time curves, tractive effort; bridges and potentiometers; PMMC, moving iron, dynamometer and induction type instruments; measurement of voltage, current, power, energy and power factor; digital voltmeters and multi meters; phase, time and frequency measurement; Q-meters; oscilloscopes and potentiometric recorders;

Power Electronics:

Semiconductor power diodes, transistors, thyristors, triacs, GTOs, MOSFETs and IGBTs-static characteristics and principle of operation; triggering circuits; phase control rectifiers; bridge converters-fully controlled and half controlled; principles of choppers and inverters; adjustable speed dc and ac drivers;

Download ApTransco Syllabus in PDF
Download ApTransco Syllabus in DOC

APgenco New building at GTS Colony

Apgenco notification for Assistant engineers (electrical, Mechanical and Civil) was announced.

Last year Syllabus: Apgenco Assistnat Engineer (electrical) exam – 2007 Syllabus

Previous Questions: Apgenco Assistant Engineer (Electrical) exam 2007 Questions

Notification details:

Vacancies:
Trainee assistant engineer: 261 (electrical+mech+civil)

Application form can be obtained by paying Rs.100/- in personal or paying Rs.135/- by IPO
from APgenco New Building, GTS Colony, Adjacent to Vengal Rao nagar, Hyderabad.

Important Dates:

Last date for sale of ICR form: August 13′ 2008

receiving filled application forms: July 28′ 2008 to August 23′ 2008

Download the syllabus in .doc format:SYLLABUS FOR THE COMPETETIVE TEST FOR THE RECRUITMENT OF ASSISTANT ENGINEERS (ELECTRICAL)

Exam will be of 2 hours duration with 100 multiple choice questions. No negative marking.

Other Info: Apgenco Website: http://www.apgenco.gov.in

India's First nuclear atomic power station: kalpakkam at Tamilnadu

The country’s first indigenously built nuclear power reactor Madras Atomic Power Station Unit-1 (MAPS-1), located at Kalpakkam in Tamil Nadu  will complete 25 years today. MAPS was Synchronised to the grid in the presence of late prime minister Indira Gandhi on July 23, 1983. MAPS comprises two units of 220 MW each of pressurised heavy water reactors (PHWR). MAPS-1 was set up at a cost of Rs 2.4 billion ($57 million).

MAPS has supplied more than 45,000 million units (MUs) of electricity at a current tariff of Rs 1.89 per unit and earned a profit of Rs 11.2 billion so far. Tamil Nadu has a share of 330 MW out of the station capacity of 440 MW in addition to the share of other beneficiary states in the southern electricity region.

NPCIL(Nuclear Power Corporation of India LTD) said that in the recent past, MAPS-1 and MAPS-2 have undergone major renovation and modernisation and, safety upgradation and en-mass coolant channels replacements. The statement added that all NPCIL stations, including MAPS, have performed “excellently” in terms of safety, achieving over 280 reactor-years of safe and accident-free operations.

All NPCIL operations stations have secured ISO-14001 certification (Environment Management System). Presently NPCIL has 17 nuclear power units in India with a total installed capacity of 4120 MW in operation and six additional units with a total capacity of 3160 MW under construction.

About Madras Atomic Power Station:
Madras Atomic Power Station located at Kalpakkam about 80 km south of Chennai, India, is a comprehensive nuclear power production, fuel reprocessing, and waste treatment facility that includes plutonium fuel fabrication for fast breeder reactors [FBRs]. It is also India’s first fully indegenously constructed nuclear power station. It has two units of 220 MWe capacity each. The first and second units of the station went critical in 1983 and 1985 respectively. The station has reactors housed in a reactor building with double shell containment ensuring total protection even in the remotest possibility of loss of coolant accident. An Interim Storage Facility [ISF] is also located in Kalpakkam.

Country:India
Owner:Nuclear Power Corporation of India LTD.
Built:1970
Start of commercial operation:January 24, 1984

Reactors:
Reactors active:2(total 440 MW)
Reactors under construction:1(500 MW)

First Commercial Tidal Power Turbine: SeaGen

World’s first tidal turbine, by Marine Current Turbines – A British Tidal energy company, has started to delivering electricity onto the grid for the first time.

This tidal current turbine named as SeaGen, has generated 150KW of power onto the grid.By intention, SeaGen is constrained to 300KW during the commissioning phase. In full operational mode, it will generate 1.2 MW of clean energy, that can be used by nearly 1000 homes.

SeaGen works like an ‘UnderWater WindMill’ with the rotors driven by the power of the tidal currents.

SeaGen was installed at Strangford Lough in Northern Ireland, one of the main tidal hotspot in UK and Irish Waters.

*(OC (W) – 5; BC-A-1; BC-B-1; BC-B (W)-1; PH-1; PH(W)-1;ST-1.)

These vacancies are subject to variation at the time of recruitment based on the necessity.

% of reservation:

• BC-25% + 4% Muslim reservation subject to orders of Government from time to time.

• SC- 15%, ST-6%, PH-3%.

• 33 1/3 % reservation for women is applicable as per rules.

Applicants should obtain the APPLICATION (ICR) FORM from the sales counter of APTRANSCO/Vidyut Soudha/Khairathabad/Hyderabad-500 082 duly remitting of Rs.100/-(Rupees One hundred only) through a crossed Demand Draft drawn on any Nationalised Bank in favour of the Pay Officer / APTRANSCO / Vidyut Soudha / Hyderabad payable at Hyderabad.

By Post: Applicants should send Crossed Demand Draft for Rs.135/(Rupees One hundred and thirty five only) as mentioned above, and address to the CGM(HRD & Training)/APTRANSCO/Vidyut Soudha/Hyderabad (along with a requisition and a self addressed post card for acknowledgement) to obtain the same by Speed post.

a) Sale of ICR applications :: From 05-07-08 to 26-07-08
Timings :: 11AM to 4PM

b) Submission of ICR applications:: From05-07-08 to 04-08-08
Timings :: 11AM to 5PM

In the Notification, APtransco not mentioned eligibility, syllabus and selection process. Hope they will release it in a couple of days. As far as I know, first class engineering graduates in the selected discipline are eligible. Syllabus will be from B.Tech syllabus. Selection process is of twos stages. First one is written exam, in which objective questions we have to answer and selected candidates will be called for Group discussion/Interview.

APTransco Assistant Engineer Notification – July 2008 Download the Notification – PDF ( Size: 64KB )

Detailed notification includes selction process, marks and dates.Download APTransco AEs Detailed Notification 2008

Aptransco Website was changed to http://www.aptransco.gov.in

For more details see it on APtransco Careers page: Notification for AEs in Regular Basis

Update: Transco agreed to remove weightage for Engineering marks was withdrawan. - August 17’2008.

BHEL is country’s premier engineering organization and one of the NAVARATNA PSUs and caters to core sectors of Indian economy viz Power Generation and Transmission, Industry, Transportation, Oil & Gas, Renewable Energy, having 14 Manufacturing Divisions, 08 Service Divisions, 15 Regional Offices, 04 Power Sector Regional Centres and over 100 Project Sites spread all over the Country. The financial turnover during the year 2007-08 was Rs.21,401 Crores and Current Order Book is of around Rs.90,000 Crores. BHEL plans to be a Rs.45,000 Crores Company by 2011-12 and a Rs.90,000 Crores Company by 2016-17. BHEL is the only PSU among the 12 Indian Companies to figure in “Forbes Asian Fabulous 50” list.

Important Dates:

Commencement of on-line submission of applications: 23rd June, 2008.
Closing of on-line submission of Applications : 10th July, 2008.
Last date of receipt of Ack. Slips at BHEL: 15th July, 2008.

Selection:
Selection Process consists of Written Test and Personal Interview.
The Written Test papers will be objective type in nature and will be bilingual i.e. in Hindi & English.
Eligible candidates will be shortlisted for being invited for written test at their own expense in the ratio of 1:20 to the number of vacancies.

For more Details: http://www.bheletr.co.in/etrlive/jsp/et_eng_index.jsp

BHEL Notification for Engineer Trainees- June 2008: Download Notification English (PDF: 145KB)

List of Navaratna and Miniratna CPSEs ( As per available information May 5′ 2008 )
1.		Bharat Electronics Limited Founded: 1954 Industry:Electronics
Bharat Electronics Limited (BEL) is an electronics company with about nine factories in India. It is owned by the Indian Government & primarily manufactures advanced electronic products for the Indian Armed Forces.BEL is one of the PSUs under Ministry of Defence, Government Of India.
2.		Bharat Heavy Electricals Limited Industry: Electrical Power Industry Founded: 1962 Employees: 42,600
BHEL or Bharat Heavy Electricals Limited is a gas and steam turbine manufacturer in India. It is one of India’s nine largest Public Sector Undertakings or PSUs. Founded in the late 1950s, BHEL is today a key player in the power sector through the construction, commissioning and servicing of power plants all over the world. BHEL has around 14 manufacturing divisions, four power sector regional centres, over 100 project sites, eight service centres and 18 regional offices .Over 65 percent of power generated in India comes from BHEL-supplied equipment. Overall it has installed power equipment with a total capacity of over 90,000 MW.
3.		Bharat Petroleum Corporation Limited Founded: 1976 Industry: Petroleum Products: Oil, LPG
Bharat Petroleum Corporation Limited (BPCL) – As the name suggests, its interests are in petroleum sector. It is involved in the refining and retailing of petroleum products.Bharat Petroleum is considered to be a pioneer in Indian petroleum industry with various path-breaking initiatives such as Pure for Sure campaign, Petro card, Fleet card etc.
4.		GAIL (India) Limited Industry: Petroleum and Gas Founded: 1984 Employees: 3500
GAIL (India) Limited, is India’s largest natural gas transportation company, integrating all aspects of the natural gas value chain. GAIL is listed by Forbes as one of the world’s 2,000 largest public companies in 2007.The company was previously known as Gas Authority of India Ltd. It is India’s principal gas transmission and marketing company. It was set up by the Government of India in August 1984 to create gas sector infrastructure.
5.		Hindustan Aeronautics Limited Industry: AeroSpace and Defence Employees: 34,000 Founded: 1940 Products: AeroSpace Equipment, Military aircraft and Space Systems
Hindustan Aeronautics Limited (HAL), based in Bangalore, India, is one of Asia’s largest aerospace companies. Under the management of the Ministry of Defence, the company is mainly involved in aerospace industry, which includes manufacturing and assembling aircraft, navigation and related communication equipment, as well as operating airports.
6.		Hindustan Petroleum Corporation Limited Founded: 1976 Industry: Petroleum Products: Oil, LPG Employees: 10,778
HPCL is a Fortune 500 company, with an annual turnover of over Rs 91,448 crores ($20892 Million) (FY 2006-07), 16% Refining & Marketing share in India and a strong market infrastructure.
7.		Indian Oil Corporation Limited Founded: Industry:Petroleum Products: Petril, Diesel, Kerosene, LPG and PetroChemicals Employees: ~36,217
Indian Oil Corporation Ltd. is currently India’s largest company by sales with a turnover of Rs. 247,479 crore (US $59.22 billion), and profit of Rs. 6963 crore (US $ 1.67 billion) for fiscal 2007. IndianOil is also the highest ranked Indian company in the prestigious Fortune ‘Global 500′ listing, having moved up 18 places to the 135th position in 2007. It is also the 20th largest petroleum company in the world. IndianOil’s vision is driven by a group of dynamic leaders who have made it a name to reckon with.
8.		Mahanagar Telephone Nigam Limited Founded:1986 Industry: TeleCommunication
9.		National Aluminium Company Limited Industry: Aluminium Founded:
10.		NMDC Limited Industry:Exploration of wide range of minerals including iron ore, copper, rock phosphate, lime stone, dolomite, gypsum, bentonite, magnesite, diamond, tin, tungsten, graphite, beach sands etc Founded:1958
India’s single largest iron ore producer and exporter, presently producing 27.07 million tons of iron ore from 3 fully mechanised mines viz., Bailadila Deposit-14/11C, Bailadila Deposit-5,10/11A (Chhattisgarh State) and Donimalai Iron Ore Mines (Karnataka State) which are awarded ISO 9001-2000 certification.
11.		NTPC Limited Industry:Electrical Power Generation Founded: 1975
NTPC Limited is the largest power generating company of India. A public sector company, it was incorporated in the year 1975 to accelerate power development in the country as a wholly owned company of the Government of India. At present, Government of India holds 89.5% of the total equity shares of the company and the balance 10.5% is held by FIIs, Domestic Banks, Public and others.
12.		Oil & Natural Gas Corporation Limited Founded: Industry: Oil and Natural Gas
13.		Power Finance Corporation Limited Industry: Indian Power Sec tor – Financial Institution in power & financial sectors Founded: 1986 Employees: 307
Power Finance Corporation Ltd. (Government of India Undertaking under the administrative control of Ministry of Power, Government of India) was conceived and came into existence in the year 1986 with a view to inter-alia provide a range of fund based and non fund based support to Indian power sector.
14.		Power Grid Corporation of India Limited Industry: Indian Electrical Power Sector – the Central Transmission Utility of India Founded:
Establishment and operation of Regional and National Power Grids to facilitate transfer of electric power within and across the regions with Reliability, Security and Economy, on sound commercial principles.
15.		Rural Electrification Corporation Limited Industry:Rural Electrification Founded:1969
Rural Electrification Corporation Limited (REC), was incorporated on July 25, 1969 under the Companies Act 1956. REC is a wholly owned Government of India Public Sector Enterprise with a net worth of Rs. 5368 Crore. Its main objective is to finance and promote rural electrification projects all over the country. It provides financial assistance to State Electricity Boards, State Government Departments and Rural Electric Cooperatives for rural electrification projects as are sponsored by them.
16.		Steel Authority of India Limited Founded:1954 Industry:Steel and Iron
Steel Authority of India Limited (SAIL) is the leading steel-making company in India. It is a fully integrated iron and steel maker, producing both basic and special steels for domestic construction, engineering, power, railway, automotive and defence industries and for sale in export markets.

Miniratna Category – I CPSEs

1. Balmer Lawrie & Co. Limited

2. Bharat Dynamics Limited

3. BEML Limited

4. Bharat Sanchar Nigam Limited

5. Bongaigaon Refineries & Petrochemicals Limited

6. Central Warehousing Corporation

7. Central Coalfields Limited

8. Chennai Petroleum Corporation Limited

9. Coal India Limited

10. Container Corporation of India Limited

11. Dredging Corporation of India Limited

12. Engineers India Limited

13. Garden Reach Shipbuilders & Engineers Limited

14. Goa Shipyard Limited

15. Hindustan Latex Limited

16. Hindustan Newsprint Limited

17. Housing & Urban Development Corporation Limited

18. India Tourism Development Corporation Limited

19. Indian Railway Catering & Tourism Corporation Limited

20. IRCON International Limited

21. Kudremukh Iron Ore Company Limited

22. Mazagaon Docks Limited

23. Mahanadi Coalfields Limited

24. Mangalore Refinery & Petrochemicals Limited

25. MMTC Limited

26. MSTC Limited

27. National Fertilizers Limited

28. Neyveli Lignite Corporation

29. NHPC Limited

30. Northern Coalfields Limited

31. Numaligarh Refinery Limited

32. Oil India Limited

33. Rashtriya Chemicals & Fertilizers Limited

34. Rashtriya Ispat Nigam Limited

35. RITES Limited

36. Satluj Jal Vidyut Nigam Limited

37. Shipping Corporation of India Limited

38. South Eastern Coalfields Limited

39. State Trading Corporation of India Limited

40. Telecommunications Consultants (India) Limited

41. Western Coalfields Limited

Miniratna Category-II CPSEs

42. Educational Consultants (I) Limited

43. Engineering Projects (I) Limited

44. Ferro Scrap Nigam Limited

45. HMT (International) Limited

46. HSCC (India) Limited

47. India Trade Promotion Organization

48. Indian Medicines Pharmaceuticals Corporation Limited

49. Manganese Ore India Limited

50. M E C O N Limited

51. National Film Development Corporation Limited

52. P E C Limited

53. Rajasthan Electronics & Instruments Limited

54. Water & Power Consultancy (India) Limited

The 1,500 Megawatt hydropower project in Kinnaur District of Himachal Pradesh, supplies electricity to the states of northern India, remained closed for the fifth consecutive day.

Officials said that the permissible limit of silt is 4000 parts per million (ppm), which had exceeded 7, 500 ppm when the plant was shut down.

While the losses on account of the plant shutdown accrue to over some billions of rupees, officials maintain that the plant will resume operations in a couple of days.

“The water level has increased by 20 per cent due to which the silt has increased, therefore as a measure of safety, we have closed the plant so as to save the turbine parts from getting damaged. Though we are incurring losses because of this shutdown, these losses are nothing as compared to what we would incur if the turbines get damaged,” said N. C. Bansal, General Manager of the Nathpa Jhakri power Plant.

The power project located around 145 kilometers from Shimla, produces around 36 million units of electricity per day. The temporary shutdown has resulted in power shortage in many states of north India.

The project supplies electricity to the states of Punjab, Harayana, Uttrakhand, Rajasthan, Delhi, Jammu and Kashmir and Uttar Pradesh.

Hi all,
I am very happy to launch/introduce Electrical.org.in website for one and everyone related to Electrical India.

Right now, Electrical.org.in covers Industry news related to power and brings latest news with in mins.

For students, freshers it covers material related to their studies, and brings latest notifications and offers.
And social community features are also there.

If you are related to Indian Electrical/Electronics/power sector get registered yourself.

NDPL ties up with Delhi College of Engineering
A pilot project to be launched in three months: Would give access to a host of services through existing lines

The North Delhi Power Limited (NDPL) and the Ministry of Information Technology are working towards an initiative that will make broadband connections through power lines possible.

“We will send Internet signals through electricity transformer and channelize them through cables running overhead and underground,” said NDPL spokesperson Ajay Maharaj. “Residents would be given a device to plug into power points at home; they will have a broadband connection.”

How it works?
* Internet signals will be transmitted through power transformer
* Will be channelised through overhead and underground power cables
* Signals to be received by device plugged into a power point at home
* Signals to be transmitted to laptop or PC through the device

A TRUCK carrying frozen goods reversed into a fire hydrant in Assembly Drive, Tullamarine, last Wednesday morning, creating a 30 metre water jet on one of the area’s busiest industrial roads.

Fire station officer Grant Adams said the water shooting up on to the overhead power lines made a precarious situation.

“If the power lines fell down, they would’ve electrified the area where they landed,” Mr Adams said. “This was especially dangerous considering the amount of water on the ground and the people standing around it.”

As overhead power lines began to spark, the truck driver took initiative by reversing his vehicle back over the water jet. In doing so, he blocked the water from reaching the power lines and averted the potential for electrical hazard.

City West Water arrived at the scene within 15 minutes to turn off the mains.

Anne Barker, managing director of City West Water, said damaged fire hydrants are a top priority for repair.

“Our crew’s quick response time and turning the water off as soon as possible greatly reduced the amount of water which might have been lost,” Ms Barker said.

“Last summer we changed the way we respond to major bursts and now turn the water supply off as soon as possible, unless there is a threat to public safety or essential services. The new procedure has saved an estimated 64 million litres of water to date.”

Police barred traffic from Tullamarine Park Drive. No one was injured in the incident.

Src: http://www.starnewsgroup.com.au/story/52986

The new names will come into force with immediate effect.

Cartoon on ‘Rural Electrification in India‘ by Cartoonist Ashok Dongre. Click on cartoon to see in full.

Src: http://www.boloji.com/cartoons4/00823.htm