When a train is received at a station during signal failure on signal post telephone, the speed of train is A. 15 kmph B. 25 kmph C. 8 kmph D. None of these

The correct answer is D. None of these.

The speed of a train is not limited to 15 kmph, 25 kmph, or 8 kmph when it is received at a station during signal failure on signal post telephone. The speed of the train will depend on a number of factors, including the type of train, the condition of the track, and the weather conditions.

In the event of signal failure, the train driver will be responsible for determining the safe speed of the train. The driver will take into account all of the relevant factors and will slow down or stop the train if necessary.

It is important to note that there is no one-size-fits-all answer to this question. The speed of a train will vary depending on the specific circumstances.