Where an assessee owns more than one house, then one house of his choice should be considered as SOP and the other one as deemed to be let out. On SOp there is a cap of interest upto 1.5lacs.
as per your details providfed the house at Chennai bears more EMi than the one at Trichy, so I think that the house at chennai shud be considered as let-out, so that you can get the whole interst paid/accrued during the F.Y. as a deduction on your total house property income. The net result for this house may be loss. also for the house at trichy, the maximum interst deduction you can get is upto 1.5lacs. So the total loss on your both houses would get deducted from your gross total income & tax would be levied after deduction of loss from your income.