Construction Planning and Management

61. 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

  1. 30 kg
  2. 300 kg
  3. 900 kg
  4. 1000 kg

Correct answer: (C)
900 kg

62. If the output of a dragline for 90° angle of swing at optimum depth of cut is X, then the output for 120° angle of swing at 120 % of optimum depth of cut will be

  1. Equal to X
  2. More than X
  3. Less than X
  4. Any of the above

Correct answer: (C)
Less than X

63. 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

  1. 0.5
  2. Less than 50 %
  3. More than 50 %
  4. 1

Correct answer: (C)
More than 50 %

64. If the total float and duration of an activity are 5 and 10 days respectively, the particular activity can be

  1. Started 5 days later
  2. Completed 5 days later
  3. Performed at slower rate in 15 days
  4. All the above

Correct answer: (D)
All the above

65. If TL is the latest allowable event occurrence time, total activity slack(s), is equal to

  1. LST-EST
  2. LFT-EFT
  3. TL-EFT
  4. All the above

Correct answer: (D)
All the above

66. In CPM analysis,

  1. Emphasis is given to activities
  2. Uncertainties are not allowed
  3. Activities are represented by arrows
  4. All the above

Correct answer: (D)
All the above

67. In India, are prefabricated components costlier than those of traditional cast-in-situ items that the prefabricated components replace?

  1. Yes, because of heavier overheads and handling cost
  2. Yes, because of the very high order of quality control for the factory made components
  3. No, because of repetitive manufacture of a number of elements
  4. No, because of savings in site labour

Correct answer: (C)
No, because of repetitive manufacture of a number of elements

68. In PERT analysis, the time estimates of activities and probability of their occurrence follow

  1. Normal distribution curve
  2. Poisson's distribution curve
  3. Beta distribution curve
  4. None of the above

Correct answer: (C)
Beta distribution curve

69. In resources levelling

  1. Total duration of project is reduced
  2. Total duration of project is increased
  3. Uniform demand of resources is achieved
  4. Cost of project is controlled

Correct answer: (C)
Uniform demand of resources is achieved

70. 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

  1. Longest duration
  2. Highest cost slope
  3. Least cost slope
  4. Shortest duration

Correct answer: (C)
Least cost slope

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