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Thyristor convertor type AVR(Automatic Voltage Regulator) is made of Thyristors(Silicon Controlled Rectifiers,SCRs). We know that output DC voltage from an SCR will not only depend upon the r.m.s. value of Input voltage applied, but also at the angle at which the input AC cycle is fired (using gate signal). If the firing angle is zero(in a simple circuit), then maximum DC output voltage will be obtained.If the firing angle is changed from 0 to 180,then maximum to minimum voltage is obtained. This property could be used to build an AVR. The firing angle proportional to Output voltage could be used to trigger the thyristor,in a closed loop manner and a nearly constant DC voltage(Average Value) can be obtained.An invertor circuitory could be utilised to get a regulated AC supply. Many other configurations can be build from thyristors to get a regulated AC supply.
6919min qualification for sbi clerck is 10+2, so can a clerck b reach to an officer rank at any time in future by promotion or departmental examination with having no graduation degree.
1 3904how to prepare for exam for the post of DIPLOMA TRAINEE at HAL and also i want previous question papers.please send me.
2383Hi..I am Ramya Naveen...I hav applied for clerical post in karnatak bank...i m having exam on jan 4 ,2010.Pls send some sample papers to my email id, i.e, ramyanavi@gmail.com
2369Dear Freinds tell me Answer for this question who knows? 1) What is the role of Indian Air Force "Ground Dutty Officer" ?...
2089What was the cut off for SSC Tax assistant examination in previous year and what may be the cut off this year?
2204hi iam selected for boi interview,they have asked me to bring an application form along with call letter where can i find that application form??will they give at the venue,or shud i download it from somewhere?? please answer
3 6741plz send me last 10 years bank clerk papers for union bank clerk for preparation. thank u..plz hurry up..its urgent
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How do you evaluate the success of your teaching?
What would be your classroom management structure if you are hired?
1.difference between activity and task 2.difference between repllication and realignment in crm 3.can we creeat business partner category 4. what is the rule of organisational determination 5. what is mapping. and how its is done
What is System Recovery?
if u have 100 rs and u have to buy brinjal,lemon and manjo,the condition is the object and the money you spent should be 100?what is the ans.(20lemon=1rs,'1 brinjal=1rs and 1 mango=5rs)
Do you think the Holy Spirit is a woman?
will technology replace teachers
when can the successful candidates in central excise inspector SSC CGL10 expect the appointment letter?? please reply!
How will you cater to the needs of a gifted child?
Can you explain a difficult situation in your job and how have to solved it . ( for a risk reporting analyst position) Hopefully answer should be about data.
What are your hobbies and interests?
which size of cable should be used for 20hp motor load?
how can i get a Valid Certificate of Competency as Electrical Supervisor after completing diploma in electrical & electronics engineering in kakinada ...
Explain what is co-teaching?
What is the capital of Argentina?
