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Everything Else AllOther (1674) 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.
6871min 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 3825how to prepare for exam for the post of DIPLOMA TRAINEE at HAL and also i want previous question papers.please send me.
2348Hi..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
2325Dear Freinds tell me Answer for this question who knows? 1) What is the role of Indian Air Force "Ground Dutty Officer" ?...
2047What was the cut off for SSC Tax assistant examination in previous year and what may be the cut off this year?
2152hi 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 6601plz send me last 10 years bank clerk papers for union bank clerk for preparation. thank u..plz hurry up..its urgent
2080
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