Answer / dheeraj

It is the device which controls the output voltage
(constant) and power factor (reactive power) of the
sysncronous machine with change in Machine load condition.
AVR helps to maintain constant output voltage of Machine
irrespective change in Machine load condition.

AVR is been design on the basis of machine rating ie. what
is machines output power(MVA),voltage and cureent as well
as rating of exciters etc.(ie. voltage and current).

Answer / heeth

they control the field current in an alternator so that the
output voltage in an alternator is constant w/o any
fluctuation.. its a closed feedback loop..

Answer / sachin subhash pawar

AVR means automatic voltage regulator.they control the
field current in an alternator.in this Avr first develop
the excitation voltage i.e.54to59v then produce full
voltage. first supply to d.c voltage 7-8v.rectifer use in
that sustem

why armature is placed in stator but not in rotor in synchronous generator ?

2 Answers   Student,

---

what is the material use in bus bar & why.

3 Answers  

---

What is s-domain and its significance?

0 Answers  

---

why we step down voltage level from 33kv to 11kv and 11kv to 415v.Instead we can step down voltage from 33kv to 415v directly using single transformer.

12 Answers   ABB, Adani, Central Electricals, Electrical, HCL,

---

how much Hp motor is required for water suction pump in home uses ?

1 Answers  

---

---

i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?

0 Answers  

---

we have a 2.5hp Starite electric motor water pump,the elec motor burned out,we need to replace starting capacitor(old capacitor specs erased),what microfarad rating capacitor do we need? 110-125V

0 Answers  

---

if the back emf eqution for dc motor EB=(QPNZ/60A) THEN what is the value of A for PMDC MOTOR OR how can dicide the value of "A"

2 Answers   BSL,

---

What is min and max voltage between earth and neutral/phase if it perfect earthing?

37 Answers   Epoch, ISS, ITC Infotech, L&T, Power Works, Statex, Sterlite, Wipro,

---

STATE WORKING OF VACCUM CIRCUIT BRAKER?

0 Answers   ABB, BEML,

---

what is the interrelation between voltage current torgue speed and magnetic flux in case of different types of electric motors

0 Answers  

---

Why earthing is required for diesel tank?

4 Answers   Greaves,

---