Construction Planning and Management
A tractor whose weight is 20 tonnes has a drawbar pull of 2500 kg, when operated on a level road having a rolling resistance 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

Reduce by 200 kg
Increase by 200 kg
Increase by 250 kg
Reduce by 250 kg

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

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

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Construction Planning and Management
Preliminary project report for a road project must contain

The several alternatives of the project that have been considered
The contract documents for inviting tenders
The soil survey, traffic survey, concept design and approximate cost
The detailed estimated cost based on detailed design

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