Which of the following is a dummy activity?

The probability distribution taken to represent the completion time in PERT analysis is

The total float for any activity along the critical path in CPM is

Which one of the following surfaces will give highest coefficient of traction while using crawler track tractors?

The independent float affects only

If the path of activities leads back into itself, the resulting error in the network is known as

Which of the following surfaces will give highest rolling resistance for a , rubber tyred vehicle?

Critical path

In resources levelling