Construction Planning and Management
Consider the following statements for a power shovel: (i) Output can be increased by reducing the angle of swing for a given depth of cut. (ii) For a given angle of swing, output will be maximum at optimum depth of cut. (iii) Output can be increased by keeping the depth of cut less than optimum depth. (iv) Output can be increased by increasing the size of shovel.

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

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

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

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Construction Planning and Management
Batching refers to

Controlling the total quantity at each batch
Controlling the quantity of each material into each batch
Adjusting the water to be added in each batch according to the moisture content of the materials being mixed in the batch
Weighing accurately, the quantity of each material for a job before mixing

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