Can silicone moulds be used for making cupcakes in electric tandoor
SilPat, a brand of silicone baking pads, is certified to 480°F. I don’t know about “electric” tandoors, but traditional tandoors, even the DIY kind, generally are much hotter than this.

So, If your tandoor can’t cook at considerably reduced temperatures, your silicone cupcake molds will not be effective. I don’t think your cupcakes would stand that kind of heat either, as a commenter already pointed out!y