If D is the duration, ES and EF are the earliest start and finish, LS and LF are latest start and latest finish time, then the following relation holds good
EF = ES + D
LS = LF - D
LF = LS + D
All the above
Correct Answer :
D. All the above
Related Questions
A machine costs Rs. 20000 and its useful life is 8 years. The money is borrowed at 8% interest per annum. The capital recovery factor at 8% interest per annum for 8 years is 0.174. The annual equipment cost of the machine will be
Rs. 1740
Rs. 3480
Rs. 5220
Rs. 6960
Pick up the PERT event from the following:
Digging of foundation started
Digging of foundation completed
Laying of concrete started
All the above
Final technical authority of a project lies with
Assistant Engineer
Executive Engineer
Superintending Engineer
Chief Engineer
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. Select the correct answer.
Both A and R is true and R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
Interfering float is the difference between
Total float and free float
Total float and independent float
Free float and independent float
None of the above
The independent float affects only
Preceding activities
Succeeding activities
The particular activity involved
None of the above
An event is indicated on the network by a number enclosed in
A circle
A square
A triangle
All the above
Works costing less than Rs. 20,000 are treated as
Any project
Major projects
Minor projects
All the above
Select the incorrect statement.
A critical path always begins at the very first event.
A critical path always terminates at the last event.
Critical activities control the project duration.
Critical activity is the one for which free float is zero.
Frequency distribution curves
Having a single lump, are called uninodal curves
If symmetrical, are called normal curves
If not symmetrical, are called skew curves
All the above
Which of the following earth moving machines has the shortest cycle time?
Drag line
Hoe
Clam shell
Dipper shovel
Completion of an activity on CPM network diagram, is generally known
Event
Node
Connector
All the above
A tractor shovel has a purchase price of Rs. 4.7 lacs and could save the organization an amount of rupees one lac per year on operating costs. The salvage value after the amortization period is 10% of the purchase price. The capital recovery period will be
3.7 years
4.23 years
5 years
7.87 years
The estimated time required to perform an activity, is known as
Event
Dummy
Duration
Float
For excavating utility trenches with precise control of depth, the excavation equipment used is
Hoe
Shovel
Dragline
None of the above
Select the incorrect statement.
Earliest start of an activity is the early event time of the node it leaves.
Latest finish of an activity is the late event time of the node it enters.
Latest start of an activity is its latest finish minus its duration.
None of the above
For the network shown in the given figure, the expected time for the activity
1-2 is 4
2-3 is 7
3-4 is 8
All the above
Pick up the correct statement from the following:
The duration between the earliest start time of the preceding event and latest finish time of the succeeding event, is called 'float'
The duration of time by which an activity can be delayed without affecting the succeeding activity, is called free float
The difference between total float and free float, is called interfering float
All the above
The time by which activity completion time can be delayed without affecting the start of succeeding activities, is known as
Duration
Total float
Free float
Interfering float
For which of the following materials, the output of power shovels for a fixed shovel size will be maximum
Moist loam
Good common earth
Well blasted rock
Wet sticky clay
For completion of a project, the critical path of the network represents
Minimum time
Maximum time
Maximum cost
Minimum cost
The most suitable type of equipment for compaction of cohesive soils is
Smooth-wheeled rollers
Vibratory rollers
Sheep foot rollers
Tampers
If the scheduled completion time of a project is more than the earliest expected time for completion of the project, then the probability of completion of the project within the scheduled completion time will be
50 %
Less than 50 %
More than 50 %
100 %
Pick up the correct statement from the following:
Forward pass is used for calculating earliest expected time
Backward pass is used for calculating the latest occurrence time
Maximum value of earliest expected time is used if there is more than one value of any event
All the above
The direct cost of a project with respect to normal time is
Minimum
Maximum
Zero
Infinite
Critical path
Is always longest
Is always shortest
May be longest
May be shortest
If the expected time for completion of a project is 10 days with a standard deviation of 2 days, the expected time of completion of the project with 99.9% probability is
4 days
6 days
10 days
16 days
A CPM family includes
CPA (Critical Path Analysis)
CPP (Critical Path Plotted)
MCE (Minimum Cost Expenditure)
All the above
Which one of the following surfaces will give highest coefficient of traction while using crawler track tractors?
Ice
Concrete
Loose sand
Earth
In the given figure, the network of a project represents
Activity of an excavation of a footing
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
None of these