If the gross vehicle weight of a truck is 30 tonne and rolling resistance is 30 kg/tonne, then the tractive effort required to keep the truck moving at a uniform speed is
30 kg
300 kg
900 kg
1000 kg
Correct Answer :
C. 900 kg
Related Questions
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
PERT analysis is based on
Optimistic time
Pessimistic time
Most likely time
All the above
The time with which direct cost does not reduce with the increase in time is known as
Crash time
Normal time
Optimistic time
Standard time
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 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
PERT is
An analytic in concept
Limited of event oriented diagrams
Used for research and development projects
All the above
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
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
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
Henry Gantt developed Bar charts for planning and scheduling of projects in
1880
1900
1920
1940
For the execution of a project, a contractor is
A person
A firm
An agency
All the above
A critical ratio scheduling
Determines the status of each activity
Adjusts automatically changes in activity progress
Is a dynamic system
None of these
Which of the following earth moving machines has the shortest cycle time?
Drag line
Hoe
Clam shell
Dipper shovel
If the excavation of earth is done manually then it costs Rs. 10 per cum. A machine can excavate at a fixed cost of Rs. 4000 plus a variable cost of Rs. 2 per cum. The quantity of earth for which the cost of excavation by machine will be equal to the cost of manual excavation is
500 cum
1000 cum
1500 cum
2000 cum
Crash project duration is obtained by summing the
Normal durations for all the activities
Crash durations for all activities
Crash durations for all the activities along the critical path obtained by taking into account the normal duration for all the activities
Crash durations for all the activities along the critical path obtained by taking into account the crash duration for all the activities
For the supply of materials for concrete, form work reinforcing and placing of concrete, removal of form work and curing of concrete, number of bar(s) required on bar chart, is
1
2
3
4
Total float for any activity is defined as the difference between
Its latest finish time and earliest start time for its successor activity
Its latest start time and earliest start time
Its latest start time and earliest finish time
Its earliest finish time and earliest start time for its successor activity
The performance of a specific task in CPM, is known
Dummy
Event
Activity
Contract
Which of the following is a weakness of bar chart?
Interdependencies of activities
Project progress
Uncertainties
All of the above
PERT technique of network analysis is mainly useful for
Small projects
Large and complex projects
Research and development projects
Deterministic activities
A golden rule for the procurement of construction stones, suggests
100% at the site
67% at the site and 33% under procurement
50% at the site and 50% under procurement
33% at the site and 67% under procurement
Railway projects are treated as
Light construction
Heavy construction
Industrial construction
None of these
The difference between the time avail-to do a job and the time required to do the job, is known as
Event
Float
Duration
Constraint
Grader is used mainly for
Trimming and finishing
Shaping and trimming
Finishing and shaping
Finishing, shaping and trimming
Pick up the correct statement from the following:
The difference of latest occurrence time and earliest expected time, is called slack
The activities connecting the events having zero slack, lie on the critical path
The critical path consumes the maximum time
All the above
Economic saving of time results by crashing
Cheapest critical activity
Cheapest noncritical activity
Costliest critical activity
Costliest noncritical activity
Military organisation is known as
Line organisation
Line and staff organisation
Functional organisation
None of these
A machine is purchased for Rs. 10,000,00 and has an estimated life of 10 years. The salvage value at the end of 10 years is Rs. 1,50,000. The book value of the machine at the end of 5 years using general straight line method of evaluation of depreciation is
Rs. 4,75,000
Rs. 5,75,000
Rs. 6,50,000
Rs. 8,50,000
The part of a derrick crane include (i) Mast (ii) Boom (iii) Bull wheel (iv) Jack Of these statements
(i), (ii) and (iv) are correct
(ii), (iii) and (iv) are correct
(i), (iii) and (iv) are correct
(i), (ii) and (iii) are correct
Critical path lies along the activities having total float
Positive
Negative
Zero
Same