Construction Planning and Management
If the optimistic time, most likely time and pessimistic time for activity A are 4, 6 and 8 respectively and for activity B are 5, 5.5 and 9 respectively, then

expected time of activity B is greater than the expected time of activity A
expected time of both activities A and B are same
expected time of activity A is greater than the expected time of activity B
None of these

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Construction Planning and Management
Batching refers to

Weighing accurately, the quantity of each material for a job before mixing
Controlling the total quantity at each batch
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

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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.

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

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Construction Planning and Management
Whenever an activity has zero total float, then

Free float and independent float both must be zero
Independent float must be zero but free float need not be zero
Free float of the activity must be zero but independent float need not be zero
Free float and independent float both need not be zero

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