Construction Planning and Management
In the given figure, the network of a project represents

Activity of an excavation which starts at event No. 1 and ends at even No. 2
Activity of excavation which takes 8 units of time
Activity of an excavation of a footing
None of these

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Construction Planning and Management
At a work site, statistical quality control of concrete means

Reduction in wastage of inspection costs
Applying the theory' of probability to sample testing or inspection
Measurement of risks to eliminate failures
Reduction in costs for the removal of defects

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

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