The rated loads of lifting cranes, as percentage of tipping load at specified radius, for crawler-mounted and pneumatic tyre-mounted machines would be respectively
80 and 90
90 and 80
85 and 75
75 and 83
Correct Answer :
D. 75 and 83
Related Questions
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. Of these statements
(ii), (iii) and (iv) are correct
(i), (ii) and (iv) are correct
(i), (iii) and (iv) are correct
(i) and (iv) are correct
A contractor has two options;
(I): 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 neither of the two projects
Could invest in either of the two projects
Should invest in project A
Should invest in project B
The independent float affects only
Preceding activities
Succeeding activities
The particular activity involved
None of the above
In time-cost optimization of a project, crashing is done.
On all the activities
On all the activities lying on the critical path
Only on activities lying on the original critical path and having flatter cost slopes
On original critical activities and those that become critical at any stage of crashing in the order of ascending cost slope
A CPM family includes
CPA (Critical Path Analysis)
CPP (Critical Path Plotted)
MCE (Minimum Cost Expenditure)
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
The artificial activity which indicates that an activity following it, cannot be started unless the preceding activity is complete, is known as
Event
Free float
Dummy
Constraint
While filling the tender for any work, the contractor considers
Site survey
Availability of construction materials
Availability of labour
All the above
Batching refers to
Controlling the total quantity at each batch
Weighing accurately, the quantity of each material for a job before mixing
Controlling the quantity of each material into each batch
Adjusting the water to be added in each batch according to the moisture content of the materials being mixed in the batch
Military organisation is known as
Line organisation
Line and staff organisation
Functional organisation
None of these
Consider the following statements: Wheeled tractors are replacing crawler tractors because
1. Wheeled tractors travel faster.
2. Crawler tractors are more expensive.
3. Track parts of a crawler wear out quickly.
4. Crawler tractors have stick control. Of these statements
1, 3 and 4 are correct
2, 3 and 4 are correct
1, 2 and 3 are correct
1, 2 and 4 are correct
Free float for any activity is defined as the difference between
Its earliest finish time and earliest start time for its successor activity
Its latest start time and earliest start time
Its latest finish time and earliest start time for its successor activity
Its earliest finish time and latest start time for its successor activity
Free float is mainly used to
Identify the activities which can be delayed without affecting the total float of preceding activity
Identify the activities, which can be delayed without affecting the total float of succeeding activity
Establish priorities
Identify the activities which can be delayed without affecting the total float of either the preceding or succeeding activities
Mile Stone charts were invented in the year of
1910
1920
1930
1940
Preliminary project report for a road project must contain
The detailed estimated cost based on detailed design
The several alternatives of the project that have been considered
The soil survey, traffic survey, concept design and approximate cost
The contract documents for inviting tenders
The grade resistance factor for an earth moving machine can be obtained by multiplying grade percentage by a factor approximately equal to
2 kg/tonne
6 kg/tonne
9 kg/tonne
20 kg/tonne
Consider the following operations:
1. Drilling
2. Blasting
3. Mucking
4. Placing steel
5. Placing concrete
The correct sequence of these operations in tunnel construction is
1, 2, 4, 3, 5
1, 3, 2, 4, 5
1, 2, 3, 4, 5
1, 3, 4, 2, 5
The probability of completion of any activity within its expected time is
50 %
84.1 %
99.9 %
100 %
Works costing less than Rs. 20,000 are treated as
Any project
Major projects
Minor projects
All the above
In resources levelling
Total duration of project is reduced
Total duration of project is increased
Uniform demand of resources is achieved
Cost of project is controlled
Pick up the correct statement from the following:
Optimistic time estimate refers to activities
Pessimistic time estimate refers to activities
Most likely time estimate refers to activities
All the above
Construction team means
An engineer
An architect
An owner
All the above
The most popular type of organisation used for Civil Engineering Constructions, is
Line organisation
Line and staff organisation
Functional organisation
Effective organisation
Which one of the following represents an activity?
Excavation for foundation
Curing of concrete
Setting of question paper
All the above
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
The main principle of an organisation, is
Unity of command
Effective control at all levels
Delegation of authority
All the above
Select the correct statement.
Activity arrows in a CPM network are drawn to scale
The tail of an arrow represents the finish of an activity
Arrow bead represents the start of an activity
None of the above
The original cost of an equipment is Rs.10,000. Its salvage value at the end of its total useful life of five years is Rs. 1,000. Its book value at the end of two years of its useful life (as per straight line method of evaluation of depreciation) will be
Rs. 8,800
Rs. 7,600
Rs. 6,400
Rs. 5,000
In the time-cost optimisation, using CPM method for network analysis, the crashing of the activities along the critical path is done starting with the activity having
Longest duration
Highest cost slope
Least cost slope
Shortest duration
Consider the following features/factors:
1. Projects are of the non-repetitive type
2. Time required need not be known
3. Time required is known precisely
4. Events have been established for planning
5. Emphasis is given to activities of project PERT is preferred for planning because of
1, 2 and 4
3, 4 and 5
1, 3 and 4
1, 2 and 5