Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / ram kumar giri
AVR stands for automatic voltage regulator. The main function of AVR is to maintain the established voltage to the MSB or to the consumer. IT maintain the terminal voltage (which is preset) of the alternator. It is done by taking the sample from two phase to the AVR(which contains OPAMPS and other summing ckts) where it is compare with the preset value. Any deviation from the set value give an output (error in either direction (+ or -). This error is processed and finally a dc voltage output comes out from AVR which is fed to the excitation system. The sign will decide that excitation to be reduce or increase to maintain the set output voltage. This process is a continuous measure so the terminal voltage is always as set at AVR as per requirement.
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
Why a Permanent Magnet Generator has higher frequency as compared to frequency of main alternator?
whatare the disadvantages occur,if the form factor of transmission will not be equal to 1.11
In ht capacitor ckt we are using LBS Panel it having isolator with fuse, one of HT fuse flash over, so what is reason behind this event.
for a 400kv t/m line with 10 ampere current will corona occur?
how much maximum load a 2 core (Single phase) 16mm aluminium wire can take ?
What are the different methodes for calculating the short circuit Current?
how we can calculate the efficiency of a diesel generator ?
what is cascade speed control device?and how this device control the speed of motors?
What is meant by time harmonics and space harmonics?
A 500 V shunt motor runs at its normal speed of 250rpm when the armature current is 200A. The resistance of the armature is 0.12 Ω. Calculate the speed when a resistance is inserted in the field reducing the shunt field to 80% of normal value and the armature current is 100A.
1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?
1.4 What is meant by CT knee point voltage and how would you determine it
Comment on the working principle of operation of a single-phase transformer.
Is there any abbrevation for STUB in Stub bus protection
why is using sensor?what is differece between photoelectric and proxmitty?
