Fig. 4. A load with a constant-impedance mode lets users test supply performance for real-world transients. The short-circuit function will test the UUT's current limit function by driving it to beyond its maximum current rating. Measurement can be made in both the current limit operation and the current trip level.
Answer & Explanation Answer: B) By changing field currents in two machines load can be changed Explanation: There is no need to arrange for actual load (loading resistors) which apart from the cost of energy consumed, would be prohibitive in size for large-size machines. By merely adjusting the field currents of the two machines, the load can be easily changed and a load test conducted over ...