Depreciation

No, from the year when assets put to use, As per AS-10

You can charge addtional depreciation in the asset used for Manufacturing or processing in the year which it put into use.

No, depreciation will not be charged for the previous year. It will be charged from the current year only.

Depreciation will be charged in the year in which asset is put to use. Further even if asset is put to use for 1 day in previous year, depreciation will be charged accordingly in the previous year.

Prakssh is absolutely right.

Depreciation will be charged from the year its PUT TO USE. cement this in your mind

thus it will be claimed in next year in which its put to use

IN ADDITION , THE IMPORTANT PROVISION IS THAT IF THE ASSETS IS READY CONDITION FOR USE FOR ATERNATIVE MACHINE OR ASSETS THEN DEPRECIATION CAN BE CLAIMED IREESPECTIVE OF PUT TO USE. PLEASE REFER THE DEFINITION OF PASSIVE USE ALSO.

   If the asset is ready for use than depreciation is to be provided.
   For e.g. in case of fire extingusher it is ready for use but if required.
   If the assessee is involved in producing or manufacturing any article or thing than additional depreciation can be taken.
    In your case there can be a good plannong that if the income is going on higher side depreciation can be claimed and if it is likely that income will be more in the next following year than depreciation can be claimed in next year.
     Ultimately the criteria depends upon that its necessary to prove that asset is put to use.

no,

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