20
30
10
None of these
Answer is Right!
Answer is Wrong!
The correct answer is: C. 10 kmph.
The speed over facing points at terminal yards where the signal overlap is zero is 10 kmph. This is because the points are not interlocked and there is a risk of derailment if the train is traveling too fast.
Option A is incorrect because the speed limit for trains traveling over facing points is 10 kmph, not 20 kmph.
Option B is incorrect because the speed limit for trains traveling over facing points is 10 kmph, not 30 kmph.
Option D is incorrect because there is a correct answer to the question.