Answer / rohit chandan

The main purpose of Automatic Voltage Regulator (AVR) is to
control the excitation to limit the terminal voltage of
synchronous generator at reference level.The excitation
system of a Turbo generator contains the exciter and the
AVR. AVR acts upon DC Vf that supply excitation to the
synchronous generator.

Answer / d oldham

The synchronous generators used do not naturally operate at
any particular voltage but the voltage can be adjusted by
manually setting the excitation. However as soon as any
load is put on the generator a different value of
excitation is required. The AVR automatically makes the
necessary adjustment by closed loop control to keep the
generator voltage constant. The operator can manually
adjust the AVR reference to allow connection to a power
system. Once connected to a large power system the AVR
setting determines the reactive power load kVAR on the
generator. A high setting exports kVAR (lagging power
factor) and a low setting imports kVAR (leading power
factor).

Answer / mohan kumar

AVR is used to maintain the generator voltage the exciter system w.k.t the exciter give excitation to generator field wdg the the output of AVR is fed to exciter and exciter output voltage is converted to DC through RDFR and it feeds the DC volt to generator field WDG

Answer / raja

Any one have a book 📖 for the fundamental electrical structure of an thermal power plant.... Please send me @rajako0202@gmail.com

Answer / nelson mathew

regulat theminal voltag

for 8 mva 33/11 kv transformer what will be the setting of differential relay on which it trip & what is the HF setting in this relay

2 Answers  

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What is the difference between IS:1554 (Part 1)/1988 & IS:694/1990 ? What do these two standards specify about?

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electrical ques

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Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?

10 Answers  

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photo conductive cell

4 Answers   Bhel,

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Why and which type of tertiary winding is used in most of the power transformer?

2 Answers  

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When we give supply to a transformer 11 kv and we get 415v from it, so when we give supply to same transformer 415v on ht side what we get? and When we gives supply to any transformer to L.T. side 415v or 220v What supply is on H.T. side?

2 Answers   Ashoka Electricals,

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Lux meter is the measuring device to measure the lux level of lighting fixture. in industrial sector two types of lighting fixture is being used as street lighting purpose 1. HPSV (Sodium) and 2. HPMV (Mercury). HPMV having white light which is an combination of red, blue and yellow colour, while HPSV haivng Yellow lighting. in HPSV red & blue colour will be absent. during measurement of the lux level of HPSV and HPMV fixture. 1. Lux meter can measure the actual lux level of both fixture? 2. or it will show false reading for HPSV fixture light as it has only yellow light present. please give me answer

1 Answers  

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when voltage increases then current also increases then what is the need of over voltage relay and over current relay? can we measure over voltage and over current by measuring current only?

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Which one hurts more AC or DC Current ?

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What is limitedly stable system?

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how many mega ohms insullation of the cable can't be use when testing with megger tester for Low voltage cable 240V use?

3 Answers  

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