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
Correct Answer :
A. 500 cum
Related Questions
The critical activity has
Maximum float
Minimum float
Zero float
None of these
While filling the tender for any work, the contractor considers
Site survey
Availability of construction materials
Availability of labour
All the above
If TL is the latest allowable event occurrence time, total activity slack(s), is equal to
LST-EST
LFT-EFT
TL-EFT
All the above
Critical Path Net Work helps an engineer
To concentrate his attention on critical activities
To divert the resources from non-critical advanced activities to critical activities
To be cautious for avoiding any delay in the critical activities to avoid delay of the whole project
All the above
Construction team means
An engineer
An architect
An owner
All the above
An event is indicated on the network by a number enclosed in
A circle
A square
A triangle
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
Which of the following is a weakness of bar chart?
Interdependencies of activities
Project progress
Uncertainties
All of the above
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 %
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 Overall in-charge of an organisation at the site responsible for the execution of the works, is
Executive Engineer
Engineer
Junior Engineer
Assistant Engineer
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.
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
Frederick W. Taylor introduced a system of working known as
Line organisation
Line and staff organisation
Functional organisation
Effective organisation
Rolling resistance of a wheel depends upon (i) Vehicle load (ii) Grade (iii) Ground conditions Of these statements
Only (i) is correct
(i) and (ii) are correct
(i) and (iii) are correct
(ii) and (iii) are correct
A wheeled tractor hauling unit is working on firm earth. The total loaded weight distribution of this unit is: Drive wheels: 25000 kg Scraper wheels: 10000 kg If the coefficient of traction for wheeled tractor on firm earth is 0.5, the rimpull which this tractor can exert without slipping is
10000 kg
12500 kg
22500 kg
5000 kg
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
CPM is
Synthesising in concepts
Is built of activities oriented programme
Is based on time estimate
All the above
Final technical authority of a project lies with
Assistant Engineer
Executive Engineer
Superintending Engineer
Chief Engineer
Which of the following is not a PERT event?
Site investigation started
Sessional work completed
Bus starts from Jaipur
Class is being attended
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
In CPM analysis,
Emphasis is given to activities
Uncertainties are not allowed
Activities are represented by arrows
All the above
A construction schedule is prepared after collecting
Number of operations
Output of labour
Output of machinery
All the above
Pick up the correct statement from the following:
Earliest expected time is denoted by TE
Latest occurrence time is denoted by TL
Contractual obligation time is denoted by Ts
All the above
The direct cost of a project with respect to normal time is
Minimum
Maximum
Zero
Infinite
The maximum rimpull in the first gear of a tractor while towing a load is 6300 kg. The tractor weighs 12.5 tonnes and is operating along a 2 percent upgrade and the rolling resistance is 45 kg/tonne. Pull available for towing the load is
3425 kg
5515 kg
4350 kg
2975 kg
For excavating utility trenches with precise control of depth, the excavation equipment used is
Hoe
Shovel
Dragline
None of the above
A tractor whose weight is 20 tonnes has a drawbar pull of 2500 kg, when operated on a level road having a rolling resistance of 30 kg per tonne. If this tractor is operated on a level road having a rolling resistance of 40 kg per tonne, then the drawbar pull of the tractor will
Reduce by 200 kg
Increase by 200 kg
Increase by 250 kg
Reduce by 250 kg
Which one of the following represents an event?
Concrete cured
Fixing of door
Plastering of walls
Selecting sites
An earth moving equipment costs Rs. 5,00,000 and has an estimated life of 10 years and a salvage value of Rs. 50,000. What uniform annual amount must be set aside at the end of each of the 10 years for replacement if the interest rate is 8% per annum and if the sinking fund factor at 8% per annum interest rate for 10 years is 0.069?
Rs. 31050
Rs. 34500
Rs. 37950
Rs. 50000