A self-propelled power reaper with a 1.2 m wide cutter bar was operated at a forward speed of 4 km h-1

Q. A self-propelled power reaper with a 1.2 m wide cutter bar was operated at a forward speed of 4 km h^-1. Turning loss during operation was observed to be 25 minutes per hectare. Neglecting any other losses, the field efficiency of the reaper will be                                          %.

Ans: 83.00 to 84.00