If you don't admit you have other loans when applying, you will essentially be fraudulently obtaining the money.
But, the banks will know, because the credit checks will be against your history, and any loans will also be flagged up on the credit history. And in anycase, how would you pay it back during your training with no 'payment holiday'.
You'll have to do it the hard way. Earn the money, then spend it on your training. If I did it, then so can you!