Answer / arvind

AVR is automatic voltage regulator which is nothing but
stabilizer.
in AVR their is motor which is connected to the auto
transformer with buck and boost transformer, as the voltage
changes the sensing microprocessor based card will sense
and compare with the set value and give command to the
buck/boost transformer and motor rotate and set the
required voltage.

Answer / tareq harb

voltage regulator main purpose is to keep system output
voltage constant as much as possible under the load
changes. through controlling excitation current that is
injected to field coils.

Answer / austin kpoto

AVR, automotive voltage regulator, important principle AVR,
exciter, when rectifies rotate induce voltage in excitation
motion. AVR, support the control system in three main ways
1.sence volts that moving to the main armature.
2. Supply current to exciter field in the in the generator.
3. AVR, will continue to function until generator maximum
output.

Answer / pavan

AVR-automatic voltage regulator

this regulate the voltage,in powerplant field exitation is
control by using avr

Answer / nikhil

AVR is automatic voltage regulator.as the name shows it
regulate the output voltage of regulator. in fact it is a
card that sense the output voltage of a generator and a
signal is giving to an exciter (an exciter is an dc or ac
generator)and thus the excitation is giving to the rotor of
generator.hence it maintains the output voltage of generator
thereby it prevents the overload.

Answer / santoshvarma

AVR is used for regulating the voltage for synchronous motor
or generator. To change the field excitation of the rotor.By
this the motor or generator can be maintained at unity power
factor by over exciting & under exciting whenever needed.

Answer / gajraj singh

AVR ; Automatic voltage Regulator
AVR basically to excite of alternator exciter & voltage generate at desire level with the help of alternator residual voltage and excitation coil, & Voltage regulate in the change of exciter excitation

Answer / nagendra

Avr means automatic voltage regulator.In case the excitation voltage will be change the avr will adjusts the required voltage. And also adjusting the frequency.

Answer / maheshbabu

AUTOMATIC VOLTAGE REGULATOR gives a command to the synchronous motor to excite the stator.IF ROTOR is in excitacy AVR can gives a command to stator(field coils)it rotates

Answer / abdul ghaffar rehan

how to adjustthe voltage indiffrent voltage

if i have to use 14 kw what size of power cable can i use and size of earth cable also.

2 Answers  

plzzzzzzzzz plzz send me the papers of JSPL WRITTEN TEST..SO that i can prepare for the test in electrical engg..

0 Answers  

What is the difference between Contactor and Circuit breaker ?

8 Answers  

what are the disadvantages of low power factor

0 Answers   HMK,

I am new guy as an electrical engr. in a 100MW HFO based power project. I am in operations division. I have noticed from last few days, my supervisor sends the last 24 hours energy generation calculation to my plant manager. I have noticed, he calculated last 24 hour's generated energy differences in KWH then he multiplied it with a multiplying factor 960. for example: total difference =2.685 KWH*960= 2577.6 MWH. but he does not not know what is multiplying factor 960?? can anybody explain it??

1 Answers   Orion,

If u take a kWh reading in 11 kV HT and 440 LV side at same time in yesterday today , then why LT consumed units 3-4℅ high as compared to HT units

1 Answers   Brigade,

what is meant by insulation voltage in cables? explain it?

4 Answers   ABB,

how the frequency was generated in power station

2 Answers  

what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.

0 Answers   Ahsanullah University of Science and Technology,

What is meant by transformer, why it should be used, with out that equipment what happens if we transformed the supply?

12 Answers   Bhel,

Do you have any P.L.C in your organization?

12 Answers  

two parallel conductors are carrying the current in the same direction.which of the following statements is true? (a)there is arepelling force between the conductors (b)the force increases when the distance between the conductors is increased (c)there is an attaracting force between the conductors (d)the force increases when the distance between the conductors is decreased

1 Answers