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

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

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Construction Planning and Management
Assertion A: For a given depth of cut, the output of a power shovel can be increased by decreasing the angle of swing.Reason R: If the angle of swing is decreased, the cycle time will be decreased.

Both A and R is true and R is the correct explanation of A
A is false but R is true
Both A and R is true but R is not the correct explanation of A
A is true but R is false

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

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