When a goods train is working without brake can the speed is A. 15 kmph B. 25 kmph C. 25 kmph by day and 15 kmph by night D. None of these

The correct answer is D. None of these.

According to the Indian Railway rules, the maximum speed of a goods train without brake is 10 kmph. This speed limit is applicable for both day and night.

The reason for this speed limit is that a goods train without brake is more difficult to control than a train with brake. In case of an emergency, it is difficult to stop a goods train without brake. This can lead to accidents.

Therefore, it is important to follow the speed limit when driving a goods train without brake.