Is it possible to induce RF Emissions from a RF enabled Device
No, you can't perform any useful RF emissions analysis of an active device when it is not powered. A significant part of emissions problems relates to non-linearity (which will depend on the bias point of the junctions). You will also not manage to induce the same level of RF signal.

What you can do is (assuming you have a suitable RF test and development licence, screened room, etc) connect a signal generator to part of a circuit and analyse the harmonic and radiation characteristics of that part. This can tell you about where in a circuit you need to focus your efforts to resolve problems, maybe if you can't determine which direction an interferer is propagating.

Assuming you have a CPU and an RF section in your design, there are probably three different energised states, CPU only, CPU plus receive, CPU plus Tx. The worst state from an emission point of view is when the transmit circuit is active, and a CPU circuit is physically close. From a testing point of view, test with the CPU running and not powered (to find the worst case).  

If you have a radio which meets emissions on its own, but it fails with harmonics once you connect to the CPU, no amount of work on the radio will fix the problem - you need to decouple the CPU input pins.