In the time-cost optimisation, using CPM method for network analysis, the crashing of the activities along the critical path is done starting with the activity having________?

For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust________?

A retaining wall and is the horizontal earth pressure, the factor of safety If is weight of against sliding, is________?

The sewerage system originates from________?

Which of the following mechanical devices is used to ensure that route cannot be changed while the train is on the point even after putting back the signal?

If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is________?