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Construction Planning and Management

Construction Planning and Management
If a is the optimistic time, b is the pessimistic time and m is most likely time of an activity, the expected time of the activity, is

(a + 2m + b)/6
(a + 4m + b)/6
(a + m + b)/6
(a + 5m + b)/6

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Construction Planning and Management
Rolling resistance of a wheel depends upon (i) Vehicle load (ii) Grade (iii) Ground conditions

(i) and (ii) are correct
(i) and (iii) are correct
(ii) and (iii) are correct
Only (i) is correct

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Construction Planning and Management
If the output of a drag-line for 90° angle of swing at optimum depth of cut is X, then the output for 120° angle of swing at 120 % of optimum depth of cut will be

Equal to X
Less than X
Any of the above
More than X

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Construction Planning and Management
Wheeled tractors are replacing crawler tractors because 1. Wheeled tractors travel faster. 2. Crawler tractors are more expensive. 3. Track parts of a crawler wear out quickly. 4. Crawler tractors have stick control. of following statements

2, 3 and 4 are correct
1, 3 and 4 are correct
1, 2 and 3 are correct
1, 2 and 4 are correct

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Construction Planning and Management
For a given size of bucket, the ideal output of a dragline will be least in

Good common earth
Sand and gravel
Wet sticky clay
Moist loam

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Construction Planning and Management
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

27 minutes
20.143 minutes
15 minutes
21 minutes

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