Latest Construction Planning & Management Objective Questions
1.In the network shown in Fig. , the activity 6-8 can be started only when
activity 4�6 is completed
activity 3 – 5 is completed
activity 2�3 is completed
both activities 2�3 and 4�6 are completed
ANSWER : : both activities 2�3 and 4�6 are completed
2.In the network shown in Fig. the latest start time of an activity 4-5 is
2
4
8
7
ANSWER : : 4
3.In the network shown in Fig. , activity 4-5 can be started only when
activity 3-4 is completed
activity 2�4 is completed
activity 2-3 is completed
activity 2-4 and 2>-A both are com-pleted
ANSWER : : activity 2-4 and 2>-A both are com-pleted
4.The area under the Beta – distribution curve is divided into two equal parts by
most likely time
optimistic time
pessimistic time
expected time
ANSWER : : expected time
5.Latest start of an activity is always
greater than or equal to latest event time of preceding node
less than or equal to latest event time of preceding node
equal to latest event time of preceding node
less than latest event time of preceding node
ANSWER : : greater than or equal to latest event time of preceding node
6.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.
ANSWER : : Critical activity is the one for which free float is zero.
7.In the network shown in Fig., the concurrent and preceding activities corresponding to activity 2-4 are respectively
1-2 and 4-7
2-3 and 1-2
2-3 and 4-7
1-2 and 3-6
ANSWER : : 2-3 and 1-2
8.If an activity has its optimistic, most likely and pessimistic times as 2, 3 and 7 respectively, then its expected time and variance are respectively
3.5 and 5/6
5 and 25/36
3.5 and 25/36
4 and 5/6
ANSWER : : 3.5 and 25/36
9.In the network shown in Fig. independent float for the activity 3-5 will be (the number on the arrow shows the duration of activity)
0
1
2
none of the above
ANSWER : : 1
10.In PERT analysis, the time estimates of activities and probability of their occurrence follow
normal distribution curve
Poisson’s distribution curve
Beta – distribution curve
none of the above
ANSWER : : Beta – distribution curve
11.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 must be zero
free float and independent float both need not be zero
ANSWER : : free float and independent float both must be zero
12.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
ANSWER : : none of the above
13.Select the incorrect statement.
Start float and finish float are always equal.
Total float can be either start float or finish float.
Start float and finish float need not be equal.
Start float and finish float are the differences between activity times and not event times.
ANSWER : : Start float and finish float need not be equal.
14.In the network shown in Fig. , the critical path is
1-2-3-4-5-6
1-2-4-5-6
1-2-3-5-6
1-2-4-3-5-6
ANSWER : : 1-2-3-4-5-6
15.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
ANSWER : : its latest start time and earliest start time
16.Which of the following does not represent an activity?
site located
foundation is being dug
the office area is being cleaned
the invitations are being sent
ANSWER : : site located
17.Which of the following is a weakness of bar chart ?
interdependencies of activities
project progress
uncertainties
all of the above
ANSWER : : all of the above
18.Which of the following is not a PERT event ?
site investigation started
sessional work completed
bus starts from Jaipur
class is being attended
ANSWER : : class is being attended
19.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
ANSWER : : identify the activities, which can be delayed without affecting the total float of succeeding activity
20.Earliest finish of an activity is always
greater than earliest event time of the following node
less than earliest event time of the following node
less than or equal to earliest event time of the following node
greater than or equal to earliest event time of the following node
ANSWER : : less than or equal to earliest event time of the following node
21.If the optimistic time, most likely time and pessimistic time for activity A are 4, 6 and 8 respectively and for activity B are 5, 5.5 and 9 respectively, then
expected time of activity A is greater than the expected time of activity B
expected time of activity B is greater than the expected time of activity A
expected time of both activities A and B are same
none of the above
ANSWER : : expected time of both activities A and B are same
22.According to Fulkerson’s rule, what are the correct event numbers corresponding to events A, B, C, D,E, F and G of the network shown in Fig. ?
1, 2,3, 4, 5, 6 and 7 respectively
1, 3,2,4, 5,6 and 7 respectively
1,2, 3, 5, 6,4 and 7 respectively
1, 3,2, 5, 6,4 and 7 respectively
ANSWER : : 1, 3,2,4, 5,6 and 7 respectively
23.In the network shown in Fig. the earliest start time of activity 5-6 is (the number on the arrow shows duration of the activity)
7
8
9
5
ANSWER : : 9
24.With reference to the network shown in Fig. , which statement is incorrect ?
Events 3 and 4 occur after event 2.
Event 7 can occur after event 4.
Event 7 precedes event 6.
Event 5 follows event 3.
ANSWER : : Event 7 can occur after event 4.
25.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
ANSWER : : normal time
26.What estimate would you give for the variance in above problem ?
81
54
36
9
ANSWER : : 81
27.The process of incorporating changes and rescheduling or replanning is called
resource levelling
resource smoothening
updating
critical path scheduling
ANSWER : : updating
28.The direct cost of a project with respect to normal time is
minimum
maximum
zero
infinite
ANSWER : : minimum
29.Which of the following earth moving machines has the shortest cycle time?
Drag line
Hoe
Clam shell
Dipper shovel
ANSWER : : Dipper shovel
30.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
ANSWER : s: a
31.A father notes that when his teenage daughter uses the telephone, she takes not less than 6 minutes for a call and som? times as much as an hour. Fifteen minutes call are more frequent than calls of any other duration. If these phone calls were an activity in PERT project, then phone calls expected duration will be
15 minutes
20.143 minutes
21 minutes
27 minutes
ANSWER : s: c
32.Critical path
is always longest
is always shortest
may be longest
may be shortest
ANSWER : : is always longest
33.Slack time refers to
an activity
an event
both event and activity
none of the above
ANSWER : : an event
34.Which of the following excavators is most suitable for digging under water?
Drag line
Hoe
Clam shell
Dipper shovel
ANSWER : : Drag line
35.The time by which a particular activity can be delayed without affecting the preceding and succeeding activities is known as
total float
free float
interfering float
independent float
ANSWER : : independent float
36.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
ANSWER : : (i), (ii) and (iii) are correct
37.The normal time required for the comple-tion of project in the above problem is
9 days
13 days
14 days
19 days
ANSWER : : 14 days
38.For a given size of bucket, the ideal output of a dragline will be least in
Moist loam
Sand and gravel
Good common earth
Wet sticky clay
ANSWER : : Wet sticky clay
39.Assertion (A): Activity 5-7 is critical. Reason (R) : Earliest finish time and latest finish time for events 5-7 are same Select the correct answer.
A is correct but R is not correct
R is correct but A is not correct
both A and R are correct
both A and R are incorrect
ANSWER : : A is correct but R is not correct
40.The time corresponding to minimum total project cost is
crash time
normal time
optimistic time
between normal time and crash time
ANSWER : : between normal time and crash time
41.A tractor whose weight is 20 tonnes has a drawbar pull of 2500 kg, when operated on a level road having a rolling resistence 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
ANSWER : : reduce by 200 kg
42.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 are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
ANSWER : : Both A and R are true and R is the correct explanation of A.
43.The independent float affects only
preceding activities
succeeding activities
the particular activity involved
none of the above
ANSWER : : the particular activity involved
44.The constraints in case of resource smoothening operation would be
resources
project duration time
both resources and project duration time
none of the above
ANSWER : : project duration time
45.Updating may result in
change of critical path
decrease of project completion time
increase of project completion time
all of the above
ANSWER : : all of the above
46.The reduction in project time normally results in
decreasing the direct cost and increasing indirect cost
increasing the direct cost and decreasing the indirect cost
increasing the direct cost and indirect cost both
decreasing the direct cost and indirect cost both
ANSWER : : increasing the direct cost and decreasing the indirect cost
47.Economic saving of time results by crashing
cheapest critical activity
cheapest non-critical activity
costliest critical activity
costliest non-critical activity
ANSWER : : cheapest critical activity
48.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
ANSWER : : (i), (ii) and (iv) are correct
49.For which of the following materials, the output of power shovels for a fixed shovel size will be maximum
Moist loam
Good common earth
We|l blasted rock
Wet sticky clay
ANSWER : : Moist loam
50.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.
ANSWER : : crash durations for all the activities along the critical path obtained by taking into account the crash duration for all the activities.
51.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
ANSWER : : 500 cum
52.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
ANSWER : : 16 days
53.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
ANSWER : : 9 kg/tonne
54.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/-
ANSWER : : Rs. 5,75,000/-
55.Output of a bulldozer is (i) increased if drawbar HP of the tractor is increased for a given hauling distance (ii) decreased if drawbar HP of the tractor is increased for a given hauling distance (iii) increased if the hauling distance is increased for a given drawbar HP of the tractor (iv) decreased if the hauling distance is increased for a given drawbar HP of the tractor Of these statement
(i) and (iii) are correct
(i) and (iv) are correct
(ii) and (iii) are correct
(ii) and (iv) are correct
ANSWER : : (i) and (iv) are correct
56.Which one of the following surfaces will give highest coefficient of traction while using crawler track tractors?
Ice
Concrete
Loose sand
Earth
ANSWER : : Earth
57.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%
ANSWER : : more than 50%
58.If the gross vehicle weight of a truck is 30 t 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
ANSWER : : 900 kg
59.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 orginal 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
ANSWER : : on original critical activities and those that become critical at any stage of crashing in the order of ascending cost slope
60.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
ANSWER : : (i) and (iii) are correct
61.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
ANSWER : : 4.23 years
62.The probability of completion of any activity within its expected time is
50%
84.1%
99.9%
100%
ANSWER : : 50%
63.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
ANSWER : : Rs. 31050
64.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
ANSWER : : 12500 kg
65.A four wheel trac*or whose operating weight is 12000 kg is pulled along a road having a rising slope of 2% at a uniform speed. Assume grade resistance factor = 10 kg/tonne. The tension in the tow cable is 720 kg. The rolling resistance of the road will be
20 kg/tonne
30 kg/tonne
40 kg/tonne
50 kg/tonne
ANSWER : : 40 kg/tonne
66.An excavator costs Rs. 20,00,000/- and has an estimated life of 8 years. It has no salvage value at the end of 8 years. The book value of the excavator at the end of 3 years using general double declining balance method is
Rs. 8,43,750/-
Rs. 8,75,000/-
Rs. 10,50,000/-
Rs. 11,56,250/-
ANSWER : : Rs. 8,43,750/-
67.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
ANSWER : : Rs.3480
68.During the construction period, price variation clause in contracts caters to
increase in rates of only important materials
variation in cost in materials element, labour element and petrol-oil-lubricant element
variation in total cost of the project on an ad hoc basis
rate of inflation
ANSWER : : variation in cost in materials element, labour element and petrol-oil-lubricant element
69.Consider the following statements : In the critical path method of construction planning, Free Float can be. # greater than Total Float. # greater than Independent Float # equal to Total Float. # less than Independent Float. Of these statements
1 and 4 are correct
2 and 3 are correct
1 and 4 are correct
1 and 2 are correct
ANSWER : : 2 and 3 are correct
70.If the expected time of completion of a project is 60 weeks with a standard deviation of 5 weeks, the probability of completing the project in 50 weeks and 65 weeks respectively will be
2.3% and 84.1%
97.7% and 84.1%
97.7 % and 15.9%
15.9% and 97.7%
ANSWER : : 2.3% and 84.1%
71.Consider the following statements: In the bar chart planning # interdependence of the operations cannot be portrayed. # progress of work can be measured. # spare time of the activities can be determined. # schedule cannot be updated. Of these statements
1,2 and 3 are correct
1 and 4 are correct
2, 3 and 4 are correct
1,2 and 4 are correct
ANSWER : : 1 and 4 are correct
72.At a work site, statistical quality control of concrete means
measurement of risks to eliminate failures
applying the theory’ of probability to sample testing or inspection
reduction in wastage of inspection costs
reduction in costs for the removal of defects
ANSWER : : applying the theory’ of probability to sample testing or inspection
73.Which of the following surfaces will give highest rolling resistance for a rubber tyred vehicle?
Concrete
Loose sand
Asphalt
Firm earth
ANSWER : : Loose sand
74.In India, are prefabricated components costlier than those of traditional cast-in-situ items that the prefabricated components replace?
Yes, because of heavier overheads and handling cost
Yes, because of the very high order of quality control for the factory made components
No, because of repetitive manufacture of a number of elements
No, because of savings in site labour
ANSWER : : No, because of repetitive manufacture of a number of elements
75.Consider the following activities in a building construction: # Concreting of roof slabs # Brick-jelly lime concrete terracing # Erection of formwork for slab # Construction of parapet wall in terrace The correct sequence of these activities is
1,3,2,4
3,1,4,2
3,1,2,4
1,3,4, 2
ANSWER : : 3,1,2,4
76.The most suitable type of equipment for compaction of cohesive soils is
Smooth-wheeled rollers
Vibratory rollers
Sheep foot rollers
Tampers
ANSWER : : Sheep foot rollers
76.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
ANSWER : : the soil survey, traffic survey, concept design and approximate cost
77.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
ANSWER : : uniform demand of resources is achieved
78.Which one of the following is not an excavating and moving type of equipment ?
Bulldozer
Clam shell
Scraper
Dump truck
ANSWER : : Dump truck
79.Consider the following operations : # Drilling # Blasting # Mucking # Placing steel # 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
ANSWER : : 1,2,3,4,5
80.For a given activity, the optimistic time, pessimistic time and the most probable estimates are 5, 17 and 8 days respectively, The expected time is
8 days
9 days
10 days
15 days
ANSWER : : 9 days
81.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/-
ANSWER : : Rs. 6,400/-
82.The basic action involved in sheep foot rolling is
Kneading
Pressing
Tamping
Vibration
ANSWER : : Kneading
83.In the time-cost optimization, 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
ANSWER : : least cost slope
84.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
ANSWER : : 5515 kg
85.Consider the following statements: Wheeled tractors are replacing crawler tractors because # wheeled tractors travel faster. # crawler tractors are more expensive. # track parts of a crawler wear out quickly. # 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
ANSWER : : 1,2 and 3 are correct
86.Sensitivity analysis is a study of
comparison of profit and loss
comparison of assets and liabilities
change in output due to change in input
economics of cost and benefits of the project
ANSWER : : change in output due to change in input
87.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
ANSWER : : 75 and 83
88.Grader is used mainly for
trimming and finishing
shaping and trimming
finishing and shaping
finishing, shaping and trimming
ANSWER : : finishing, shaping and trimming
89.Consider the following features/factors : # Projects are of the non-repetitive type. # Time required need not be known. # Time required is known precisely. # Events have been established for planning. # 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
ANSWER : : 1,2 and 4
90.A contractor has two options;� : 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
ANSWER : : should invest in neither of the two projects
91.For excavating utility trenches with precise control of depth, the excavation equipment used is
Hoe
Shovel
Drag line
None of the above
ANSWER : : Hoe
92.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
ANSWER : : controlling the quantity of each material into each batch