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.

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

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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.

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

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Construction Planning and Management
A contractor has two options;(l) : Invest his money in project A or (II) : Invest his money in project B. If he decides to invest in A, for every rupee invested, he is assured of doubling his money in ten years. If he decides to invest in B, he is assured of making his money 1.5 times in 5 years. If the contractor values his money at 10% interest rate, he

should invest in project B
could invest in either of the two projects
should invest in project A
should invest in neither of the two projects

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