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.Management Sciences
Category: Construction Planning and Management
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________________?
0
A. longest duration
B. highest cost slope
C. least cost slope
D. shortest duration
A four wheel trac*or whose operating weight is 12000 kg is pulled along a road having a rising slope of 2% at a uniform speed. Assume grade resistance factor = 10 kg/tonne. The tension in the tow cable is 720 kg. The rolling resistance of the road will be___________________?
A. 20 kg/tonne
B. 30 kg/tonne
C. 40 kg/tonne
D. 50 kg/tonne
If an activity has its optimistic, most likely and pessimistic times as 2, 3 and 7 respectively, then its expected time and variance are respectively___________________?
A. 3.5 and 5/6
B. 5 and 25/36
C. 3.5 and 25/36
D. 4 and 5/6
For excavating utility trenches with precise control of depth, the excavation equipment used is_______________?
A. Hoe
B. Shovel
C. Dragline
D. None of the above
The grade resistance factor for an earth moving machine can be obtained by multiplying grade percentage by a factor approximately equal to_________________?
A. 2 kg/tonne
B. 6 kg/tonne
C. 9 kg/tonne
D. 20 kg/tonne
Which of the following surfaces will give highest rolling resistance for a rubber tyred vehicle?
A. Concrete
B. Loose sand
C. Asphalt
D. Firm earth
Crash project duration is obtained by summing the________________?
A. normal durations for all the activities
B. crash durations for all activities
C. crash durations for all the activities along the critical path obtained by taking into account the normal duration for all the activities
D. crash durations for all the activities along the critical path obtained by taking into account the crash duration for all the activities
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