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D’Arsonval Galvanometr
The use of D’Arsonval galvanometer is very common in variety of measuring instruments. The galvanometer is basically used in an instrument for detecting the presence of small voltages or currents in...
View ArticleDeflecting System
In most of the indicating instruments the mechanical force proportional to the quantity to be measured is generated. This force or torque deflects the pointer. The system which produces such a...
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Emmanuel Mbasha Aachiwa Huru…Upande wa Mashtaka Umeshindwa Kuthibitisha kosa...
Mwimbaji wa nyimbo za Injili nchini, Emmanual Mbasha (32), leo ameangua kilio baada ya kuachiwa huru na Mahakama ya Wilaya ya Ilala huku mke wake, Flora amesema yuko tayari warudiane endapo ataomba...
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Mgombea Mwenza CCM Avunja Ngome ya ACT Tanga, Avuna Wanachama 272 wa Upinzani
Baadhi ya wana CCM na wananchi wakiwa wamefurika katika Viwanja wa Jitegemee Mjini Muheza ambapo mgombea mwenza nafasi ya urais CCM, Bi. Samia Suluhu Hassan alifanya mkutano wa kampeni jana. Baadhi...
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Dk Magufuli asema hakuomba Urais kutafuta fedha bali kuwafanyia kazi wananchi
Mgombea urais wa Tanzania kupitia CCM, akijinadi kwa wananchi kwenye mkutano wa kampeni katika Uwanja wa Gymkhana mjini Bukoba. Dk Magufuli amesema kuwa yeye alipoamua kugombea urais hakufuata fedha...
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Utafiti wa TWAWEZA Waibeba CCM…..Kama Uchaguzi Ungefanyika Leo asilimia 65%...
Taasisi ya Twaweza imetoa utafiti wake ambao inasema imefanya kwa wananchi wa Tanzania bara kutoka mikoa tofauti ya Tanzania. Swali la kama uchaguzi ungefanyika leo, ungempigia kura mgombea wa...
View ArticleRegulation of Synchronous Generator : Introduction
The regulation of an alternator can be determined by various methods. In case of small capacity alternators it can be determined by direct loading test while for large capacity alternators it can be...
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KVA Rating of an Alternator
The alternators are designed to supply a specific voltage to the various loads. This voltage is called its rated terminal voltage denoted as V L . The power drawn by the load depends on its power...
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Voltage Regulation of an Alternator
Under the load condition, the terminal voltage of alternator is less than the induced e.m.f. E ph . So if load is disconnected , V ph will change from V ph to E ph , if flux and speed is maintained...
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Voltage Equation of an Alternator
In a d.c. generators, we have seen that due to the armature resistance drop and brush drop it is not possible to have all the induced e.m.f. available across the load. The voltage available to the...
View ArticleConcepts of Synchronous Reactance and Impedance
The sum of fictitious armature reaction reactance accounted for considering armature reaction effect and the leakage reactance of the armature called synchronous reactance of the alternator demoted as...
View ArticleParameters of Armature Winding
There are three important parameters of an armature winding of an alternator. These are, 1. Armature resistance R a 2. Armature leakage reactance X L 3. Reactance corresponding to armature reaction...
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Effect of Harmonics Components on an Induced E.M.F.
The flux density distribution around the air gap in all well designed alternators is symmetrical with respect to abscissa and also to polar axis. Thus it can be expressed with the help of a Fourier...
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Harmonics
In case of alternators, the voltage and current induced are having sinusoidal waveforms. But practically we can not get sinusoidal waveform when such alternators are loaded. Due to the loading...
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Generalized Expression for E.M.F. Equation of an Alternator
E.M.F. Equation of an Alternator : Part4 Considering full pitch, concentrated winding. E ph = 4.44 f Φ T ph Volts. But due to short pitch, distributed winding...
View ArticleFractional Slot Winding
This is another class of winding which depends on the value of m. Note : When the value of m is non-integer i.e. fraction then the winding is called fractional slot winding. If S is the number...
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Types of Armature Windings Part2
1.3 Concentrated and Distributed Winding In three phase alternators, we have seen that there are three different sets of windings, each for a phase. So depending upon the total number of slots...
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Breaking News: Waziri Celina Kombani afariki dunia
Waziri wa Nchi,Ofisi ya Rais Menejimenti ya Utumishi wa Umma Mh. Celina Kombani amefariki dunia nchini India alikokuwa akipatiwa matibabu Taarifa tulizozipata usiku huu zimesema kuwa Waziri...
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LOWASSA Aeleza Kama Atakubali au Atakataa Matokeo Akitangazwa AMESHINDWA
ZIKIWA zimebakia siku 30 kabla watanzania hawajapiga kura ya kumchagua Rais,mgombea urais kwa tiketi ya CHADEMA, Edward Lowassa ambaye amekuwa akieleza imani yake kuwa atashinda...
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Mgeja Ashangaa Push-Up Za Magufuli….Asema Anafaa Kushiriki Michezo Ya Olympic...
Aliyekuwa Mwenyekiti wa CCM Mkoa wa Shinyanga Khamis Mgeja ambaye alijiondoa na kuhamia Vyama pinzani, amesema anashangaa kuona mgombea urais wa CCM, Dk John Magufuli, akipiga push up, hivyo...
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