What if amount of damage exceeds the amount of the coverages will the mortgage insurance cover it if its a lender-placed policy?

No. A lender placed or forced place policy is only to protect the bank or finance company and you pay the premiums. The policy does not cover the contents or anything except the amount that is owed to the bank or finance company. In these cases the policy was force placed because the homeowner did not keep the insurance that was required by the contract so the mortgagee placed the coverage to cover themselves.