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

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Construction Planning and Management
Latest start of an activity is always

less than latest event time of preceding node
less than or equal to latest event time of preceding node
equal to latest event time of preceding node
greater than or equal to latest event time of preceding node

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