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Title: SEMINAR ON INTEGRATED POSITIONAL PROTECTION OF TRANSMISSION SYSTEMS USING GPS
Page Link: SEMINAR ON INTEGRATED POSITIONAL PROTECTION OF TRANSMISSION SYSTEMS USING GPS -
Posted By: tonytomson
Created at: Friday 26th of November 2010 02:14:16 PM
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ABSTRACT


This paper presents a new technique for the protection of power transmission systems by using the Global Positioning System (GPS) and fault generated transients, the Integrated Positional Protection technique.A specially designed integrated positional protection relay, which contains a fault transient detection system together with a substation communication network, is connected to the power line.The relay detects the fault generated high frequency voltage transient ....etc

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Title: OVERUNDER VOLTAGE PROTECTION OF ELECTRICAL APPLIANCES
Page Link: OVERUNDER VOLTAGE PROTECTION OF ELECTRICAL APPLIANCES -
Posted By: smart paper boy
Created at: Friday 05th of August 2011 01:08:39 PM
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This circuit protects refrigerators as well as other electrical appliances from over and under voltage. By the name itself we can say that if the input voltage is more or less than the required voltage then the electrical appliance is turned off nothing but it gets disconnected from its respective power supply.
This circuit uses an operational amplifier IC LM324 which is used as a comparator. Generally, the IC LM324 consists of four operational amplifiers, of which only two operational amplifiers are used. In this IC, we ha ....etc

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Title: Over Under Line Voltage Protection for Electrical Appliances
Page Link: Over Under Line Voltage Protection for Electrical Appliances -
Posted By: smart paper boy
Created at: Thursday 28th of July 2011 01:36:23 PM
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ABSTRACT:
This circuit protects refrigerators as well as other electrical appliances from over and under voltage. By the name itself we can say that if the input voltage is more or less than the required voltage then the electrical appliance is turned off nothing but it gets disconnected from its respective power supply.
This circuit uses an operational amplifier IC LM324 which is used as a comparator. Generally, the IC LM324 consists of four operational amplifiers, of which only two operational amplifi ....etc

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Title: Comparison Of Different Electrical Machines For Hybrid Electrical Vehicles
Page Link: Comparison Of Different Electrical Machines For Hybrid Electrical Vehicles -
Posted By: Wifi
Created at: Friday 29th of October 2010 02:24:25 AM
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ABSTRACT




Because of high requirements in power, efficiency, installation space and weight, the design of electrical machines for hybrid electrical vehicles is a particular challenge. This seminar describes a comparative study allowing the selection of the most appropriate electric-propulsion system for a parallel hybrid electric vehicle (HEV). This seminar is based on an exhaustive review of the state of the art and on an effective comparison of the performances of the four main electric propulsion systems, namely the d ....etc

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Title: surge current protection using superconductors ppt seminar
Page Link: surge current protection using superconductors ppt seminar -
Posted By:
Created at: Monday 10th of December 2012 08:43:43 PM
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....etc

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Title: seminar report on differential protection of transformer
Page Link: seminar report on differential protection of transformer -
Posted By:
Created at: Wednesday 09th of January 2013 09:18:28 AM
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Am Nnachi Gideon a final year student of electrical engineering from University Of Nigeria (UNIZIK).
Am presenting a seminar on Differential Protection of Power transformer.
Am here in search of material for the said seminar topic achievement.
Please help me ....etc

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Title: over under voltage protection electrical appliances
Page Link: over under voltage protection electrical appliances -
Posted By:
Created at: Saturday 21st of April 2012 07:26:23 AM
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Introduction on over/under voltage protection of electrical appliances ....etc

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Title: PROTECTION FOR YOUR ELECTRICAL APPLIANCES
Page Link: PROTECTION FOR YOUR ELECTRICAL APPLIANCES -
Posted By: seminar addict
Created at: Wednesday 25th of January 2012 05:57:01 PM
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PROTECTION FOR YOUR ELECTRICAL APPLIANCES




Here is a very low-cost circuit to
save your electrically operated
appliances, such as TV, tape
recorder, refrigerator, and other
instruments during sudden tripping and
resumption of mains supply. Appliances
like refrigerators and air-conditioners are
more prone to damage due to such
conditions.

The simple circuit given here switches
off the mains supply to the
load as soon as the power
trips. The supply can ....etc

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Title: seminar on surge current protection using super conductor
Page Link: seminar on surge current protection using super conductor -
Posted By: Rajani R.Pai
Created at: Saturday 11th of June 2011 08:25:17 PM
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can u please give me more information on seminar surge current protection using super conductor ....etc

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Title: ASSISTANT ELECTRICAL INSPECTOR - KERALA ELECTRICAL kerala psc previous question paper
Page Link: ASSISTANT ELECTRICAL INSPECTOR - KERALA ELECTRICAL kerala psc previous question paper -
Posted By: amrutha735
Created at: Saturday 29th of April 2017 07:17:22 PM
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1.Zero voltage regulation in a transformer occurs at :
(A)zero p.f. lead 
(B)unity p.f.
(C )leading p.f.
(D)lagging p.f.

2.A parallel plate capacitor has 15 p.F capacitance. If the linear dimensions of the plate are doubled and the distance between the plates are also doubled, then new value of capacitance would be :
(A)15uF
(B)30 uF
(C )60 uF
(D)7.5 u.F

3.Resistance of a 230 V 100 W bulb is R1 and that of a 230 V 75 W is R2. Then,
(A)R1= R2
(B)R1 > R2
(C )R1 < R2
(D)R1 - 2R2

4.The current in a series ....etc

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