Maximum speed of trains during day in case of OHE failure is ________ A. 108 km B. 70 km C. 65 km D. 60 km

108 km
70 km
65 km
60 km

The correct answer is: D. 60 km.

The maximum speed of trains during day in case of OHE failure is 60 km. This is because, in case of OHE failure, the train will be running on battery power. The battery power is limited and hence the speed of the train has to be reduced. If the speed of the train is more than 60 km, the battery power may not be sufficient and the train may come to a halt.

Option A is incorrect because the maximum speed of trains during day in case of OHE failure is 60 km, not 108 km.

Option B is incorrect because the maximum speed of trains during day in case of OHE failure is 60 km, not 70 km.

Option C is incorrect because the maximum speed of trains during day in case of OHE failure is 60 km, not 65 km.