Construction Planning and Management
Output of a bulldozer is (i) Increased if drawbar HP of the tractor is increased for a given hauling distance (ii) Decreased if drawbar HP of the tractor is increased for a given hauling distance (iii) Increased if the hauling distance is increased for a given drawbar HP of the tractor (iv) Decreased if the hauling distance is increased for a given drawbar HP of the tractor

(i) and (iii) are correct
(i) and (iv) are correct
(ii) and (iv) are correct
(ii) and (iii) are correct

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Construction Planning and Management
Total float for any activity is defined as the difference between

Its latest start time and earliest start time
Its latest finish time and earliest start time for its successor activity
Its latest start time and earliest finish time
Its earliest finish time and earliest start time for its successor activity

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