The automobile which we was starting to take a exam in pennyless down as well as we have a let automobile whilst a in a shop. If we am authorised to operate a let car, what papers do we move in place of a word as well as registration label which we would move for my own car? Let me know if we have taken a PA exam in a let automobile before.
If not, would we be authorised to steal my friend’s automobile to take a test?

I would honestly call and ask. They will be able to tell you more, and they might even work something out with you.
Good luck!
Probably not, because the rental company would not allow you, as an unlicensed and unnamed driver, to drive the rental car.
yes you can use a rental car, you can use any car that you want as long as it is safe. i work at the dmv and I even have people bring in cars to use that they got from dealerships and using them on a test drive then they return the car to the dealership when they done.