construction planning and management Mcqs
51. Critical path_____________?
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A. is always longest

B. may be shortest

C. is always shortest

D. may be longest

52. In the bar chart planning____________?
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A. sider the following statements?

B. progress of work can be measured

C. interdependence of the operations cannot be portrayed

D. spare time of the activities can be determined

E. schedule cannot be updated</strong>

53. In time-cost optimization of a project, crashing is done____________?
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A. on original critical activities and those that become critical at any stage of crashing in the order of ascending cost slope

B. only on activities lying on the orginal critical path and having flatter cost slopes

C. on all the activities

D. on all the activities lying on the critical path

54. The most suitable type of equipment for compaction of cohesive soils is_________________?
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A. Smooth-wheeled rollers

B. Tampers

C. Sheep foot rollers

D. Vibratory rollers

55. The correct sequence of these activities is________________?
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A. sider the following activities in a building construction?

56. The correct sequence of these operations in tunnel construction is______________?
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A. Blasting

B. sider the following operations :

C. Placing steel

D. Drilling

E. Placing concrete</strong>

F. Mucking

57. 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_________________?
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A. 1500 cum

B. 2000 cum

C. 500 cum

D. 1000 cum

58. PERT is preferred for planning because of________________?
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A. sider the following features/factors

59. Batching refers to________________?
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A. weighing accurately, the quantity of each material for a job before mixing

B. adjusting the water to be added in each batch according to the moisture content of the materials being mixed in the batch

C. controlling the total quantity at each batch

D. controlling the quantity of each material into each batch
60. In the critical path method of construction planning, Free Float can be_____________?
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A. greater than Independent Float

B. sider the following statements ?

C. greater than Total Float.

D. equal to Total Float.

E. less than Independent Float. Of these statements</strong>

61. Which of the following is not a PERT event ?
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A. class is being attended

B. bus starts from Jaipur

C. site investigation started

D. sessional work completed

62. The probability of completion of any activity within its expected time is_________________?
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A. 84.10%

B. 50%

C. 99.90%

D. 100%

63. What estimate would you give for the variance in above problem ?
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A. 54

B. 81

C. 9

D. 36

64. Which one of the following surfaces will give highest coefficient of traction while using crawler track tractors?
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A. Concrete

B. Ice

C. Earth

D. Loose sand

65. Free float for any activity is defined as the difference between__________________?
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A. its earliest finish time and latest start time for its successor activity

B. its earliest finish time and earliest start time for its successor activity

C. its latest finish time and earliest start time for its successor activity

D. its latest start time and earliest start time

66. PERT technique of network analysis is mainly useful for__________________?
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A. research and development projects

B. small projects

C. deterministic activities

D. large and complex projects

67. Total float for any activity is defined as the difference between________________?
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A. its latest finish time and earliest start time for its successor activity

B. its latest start time and earliest start time

C. its latest start time and earliest finish time

D. its earliest finish time and earliest start time for its successor activity

68. Slack time refers to_______________?
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A. an activity

B. an event

C. both event and activity

D. none of the above

69. In PERT analysis, the time estimates of activities and probability of their occurrence follow_______________?
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A. Poissons distribution curve

B. Beta distribution curve

C. none of the above

D. normal distribution curve

70. The time with which direct cost does not reduce with the increase in time is known as_________________?
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A. normal time

B. standard time

C. crash time

D. optimistic time

71. Economic saving of time results by crashing_________________?
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A. costliest non-critical activity

B. costliest critical activity

C. cheapest non-critical activity

D. cheapest critical activity
72. The minimum width of the fire escape stairs shall be?
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A. 1.25 m

B. 2.0 m

C. 1.5 m

D. 1.00 m

73. Select the incorrect statement?
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A. Earliest start of an activity is the early event time of the node it leaves.

B. Latest finish of an activity is the late event time of the node it enters.

C. none of the above

D. Latest start of an activity is its latest finish minus its duration.

74. The independent float affects only_______________?
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A. the particular activity involved

B. preceding activities

C. succeeding activities

D. none of the above

75. 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_______________?
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A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is not the correct explanation of A

C. A is true but R is false

D. A is false but R is true

76. The constraints in case of resource smoothening operation would be_______________?
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A. resources

B. project duration time

C. both resources and project duration time

D. none of the above

77. Crash project duration is obtained by summing the________________?
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A. normal durations for all the activities

B. crash durations for all activities

C. crash durations for all the activities along the critical path obtained by taking into account the crash duration for all the activities

D. crash durations for all the activities along the critical path obtained by taking into account the normal duration for all the activities

78. For a given size of bucket, the ideal output of a dragline will be least in_______________?
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A. Moist loam

B. Wet sticky clay

C. Good common earth

D. Sand and gravel

79. Earliest finish of an activity is always_______________?
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A. greater than or equal to earliest event time of the following node

B. greater than earliest event time of the following node

C. less than earliest event time of the following node

D. less than or equal to earliest event time of the following node
80. Select the correct statement?
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A. The tail of an arrow represents the finish of an activity

B. Activity arrows in a CPM network are drawn to scale

C. none of the above

D. Arrow bead represents the start of an activity

81. Select the incorrect statement?
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A. Start float and finish float are always equal

B. Total float can be either start float or finish float

C. Start float and finish float need not be equal

D. Start float and finish float are the differences between activity times and not event times

82. In the network shown in Fig. (15 fig) the latest start time of an activity 4-5 is_________________?
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A. 7

B. 4

C. 8

D. 2

83. Which of the following earth moving machines has the shortest cycle time?
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A. Hoe

B. Clam shell

C. Drag line

D. Dipper shovel
84. 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___________________?
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A. 5 and 25/36

B. 4 and 5/6

C. 3.5 and 25/36

D. 3.5 and 5/6

85. The direct cost of a project with respect to normal time is________________?
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A. zero

B. maximum

C. infinite

D. minimum
86. 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__________________?
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A. Rs. 11,56,250/-

B. Rs. 8,75,000/-

C. Rs. 8,43,750/-

D. Rs. 10,50,000/-

87. Free float is mainly used to_________________?
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A. establish priorities

B. identify the activities which can be delayed without affecting the total float of either the preceding or succeeding activities

C. identify the activities, which can be delayed without affecting the total float of succeeding activity

D. identify the activities which can be delayed without affecting the total float of preceding activity

88. Select the incorrect statement?
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A. A critical path always terminates at the last event

B. A critical path always begins at the very first event

C. Critical activities control the project duration

D. Critical activity is the one for which free float is zero