Hello Muthu,
See the steps and process given on the below mentioned links to populate the repeating table control in Infopath
http://www.bizsupportonline.net/infopath2007/autofill-repeating-table-data-sharepoint-list-row-inserted.htm
http://www.bizsupportonline.net/infopath2007/automatically-populate-repeating-table-infopath-sequential-dates.htm