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.

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

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

The detailed estimated cost based on detailed design
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

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Construction Planning and Management
Free float is mainly used to

Identify the activities which can be delayed without affecting the total float of either the preceding or succeeding activities
Identify the activities, which can be delayed without affecting the total float of succeeding activity
Identify the activities which can be delayed without affecting the total float of preceding activity
Establish priorities

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