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

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Construction Planning and Management
In time-cost optimization of a project, crashing is done.

On all the activities
On original critical activities and those that become critical at any stage of crashing in the order of ascending cost slope
On all the activities lying on the critical path
Only on activities lying on the original critical path and having flatter cost slopes

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