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

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Construction Planning and Management
Free float for any activity is defined as the difference between

its earliest finish time and earliest start time for its successor activity
its latest finish time and earliest start time for its successor activity
its latest start time and earliest start time
its earliest finish time and latest start time for its successor activity

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Construction Planning and Management
Batching refers to

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

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