Which of the following excavators is most suitable for digging under water?

A. Drag line
B. Hoe
C. Clam shell
D. Dipper shovel

A tractor whose weight is 20 tonnes has a drawbar pull of 2500 kg, when operated on a level road having a rolling resistence of 30 kg per tonne. If this tractor is operated on a level road having a rolling resistance of 40 kg per tonne, then the drawbar pull of the tractor will________________?

A. Reduce by 200 kg
B. Increase by 200 kg
C. Increase by 250 kg
D. Reduce by 250 kg

Interfering float is the difference between__________________?

A. Total float and free float
B. Total float and independent float
C. Free float and independent float
D. None of the above

Updating may result in_________________?

A. Change of critical path
B. Decrease of project completion time
C. Increase of project completion time
D. All of the above

The normal time required for the completion of project in the above problem is_______________?

A. 9 days
B. 13 days
C. 14 days
D. 19 days

The process of incorporating changes and rescheduling or replanning is called_______________?

A. Resource levelling
B. Resource smoothening
C. Updating
D. Critical path scheduling

The reduction in project time normally results in_______________?

A. Decreasing the direct cost and increasing indirect cost
B. Increasing the direct cost and decreasing the indirect cost
C. Increasing the direct cost and indirect cost both
D. Decreasing the direct cost and indirect cost both

The time by which a particular activity can be delayed without affecting the preceding and succeeding activities is known as_______________?

A. Total float
B. Free float
C. Interfering float
D. Independent float

A father notes that when his teenage daughter uses the telephone, she takes not less than 6 minutes for a call and som? times as much as an hour. Fifteen minutes call are more frequent than calls of any other duration. If these phone calls were an activity in PERT project, then phone calls expected duration will be_______________?

A. 15 minutes
B. 20.143 minutes
C. 21 minutes
D. 27 minutes

Critical path_____________?

A. Is always longest
B. Is always shortest
C. May be longest
D. May be shortest