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

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

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Construction Planning and Management
During the construction period, price variation clause in contracts caters to

Rate of inflation
Increase in rates of only important materials
Variation in total cost of the project on an ad hoc basis
Variation in cost in materials element, labour element and petrol-oil-lubricant element

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Construction Planning and Management
Whenever an activity has zero total float, then

Free float of the activity must be zero but independent float need not be zero
Free float and independent float both need not be zero
Free float and independent float both must be zero
Independent float must be zero but free float need not be zero

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