dead loss meaning in Hindi

Examples

1. The first year or so was pretty much a dead loss.
2. The piston generates electricity on both strokes, reducing piston dead losses.
3. Doctors were a dead loss-ordered lots of tests but turned up nothing useful.
4. I have therefore blocked DIGITESTAN indefinitely, as a dead loss.
5. It's not a dead loss, but it's pretty soft ."
6. Anyway, Starship Troopers is not a dead loss.
7. We're all at a dead loss ."
8. What is more, he never received a dollar of this expenditure, nor for his services as receiver, and the entire amount was a dead loss to him.
9. "I don't abuse my body unnecessarily, so if I had to retire at 62, it's a dead loss, right ? " Lee told the Straits Times newspaper.
10. I did detect sound from within the room to degree, and noise from inpinging wind to a greater degree, but as for understanding converstions, it was a dead loss.