Construction Planning and Management
Rolling resistance of a wheel depends upon (i) Vehicle load (ii) Grade (iii) Ground conditions

(i) and (ii) are correct
(i) and (iii) are correct
Only (i) is correct
(ii) and (iii) are correct

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

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

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