How to align local coordinate with global axis? I want to know if there is a way to align the local axis of an object to its global axis, without actually rotating the object. Please help me out, thanks in advance !!
Press CtrlA to bring up the Apply object Transformation menu and select Rotation.



From the blender manual:


  This will make Blender consider the current rotation to be equivalent to 0 degrees in each plane i.e. the selection will not rotated, the current rotation will be considered to be the “default rotation”