When water level is just above top of rail speed of electric locomotive shall apply ? A. 5 kmph B. 10 kmph C. 15 kmph D. 20 kmph

The correct answer is A. 5 kmph.

When the water level is just above the top of the rail, the speed of the electric locomotive shall be 5 kmph. This is because the locomotive is at risk of derailment if it travels at a higher speed. The water can cause the locomotive to lose traction and slide off the rails.

Option B is incorrect because it is too high a speed. The locomotive is at risk of derailment if it travels at this speed.

Option C is incorrect because it is too low a speed. The locomotive will not be able to move at this speed.

Option D is incorrect because it is not a valid option.