11.The time by which a particular activity can be delayed without affecting the preceding and succeeding activities is known as

12.The part of a derrick crane include (i) Mast (ii) Boom (iii) Bull wheel (iv) Jack Of these statements

13.The normal time required for the comple-tion of project in the above problem is

14.For a given size of bucket, the ideal output of a dragline will be least in

15.Assertion (A): Activity 5-7 is critical. Reason (R) : Earliest finish time and latest finish time for events 5-7 are same Select the correct answer.