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
A is false but R is true
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

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Construction Planning and Management
Earliest finish of an activity is always

Less than earliest event time of the following node
Greater than earliest event time of the following node
Greater than or equal to earliest event time of the following node
Less than or equal to earliest event time of the following node

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

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
Only on activities lying on the original critical path and having flatter cost slopes
On all the activities lying on the critical path

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