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Question 1 · Civil Engineering (SSC JE) · Construction Management PERT uses time estimates which are
Choose your answer for question 1 A. five: one for each stage B. two: normal and crash C. three: optimistic, most likely and pessimistic D. one fixed timeAnswer and explanation Correct answer: C
PERT is probabilistic. Each activity has optimistic (to), most likely (tm) and pessimistic (tp) times.
Question 2 · Civil Engineering (SSC JE) · Construction Management In PERT, an activity has optimistic, most likely and pessimistic times of 4, 6 and 14 days. Its expected time is
Choose your answer for question 2 A. 7 days B. 6 days C. 10 days D. 8 daysAnswer and explanation Correct answer: A
te = (to + 4tm + tp)/6 = (4 + 24 + 14)/6 = 42/6 = 7 days.
Question 3 · Civil Engineering (SSC JE) · Construction Management The activities on the critical path have a total float of
Choose your answer for question 3 A. one day B. zero C. the maximum value in the network D. negative infinityAnswer and explanation Correct answer: B
Critical activities have no slack, so any delay in them delays the whole project.
Question 4 · Civil Engineering (SSC JE) · Construction Management The bar chart in project planning was introduced by
Choose your answer for question 4 A. Karl Pearson B. Henry L. Gantt C. Frederick Taylor D. Henry FordAnswer and explanation Correct answer: B
Gantt charts show activities as bars against a time scale. They do not show interdependencies as clearly as network methods.
Question 5 · Civil Engineering (SSC JE) · Construction Management In a lump-sum contract, the contractor agrees to
Choose your answer for question 5 A. work without any fixed price B. be paid per unit of each item C. be paid for the actual cost plus a fee D. complete the work for a fixed total priceAnswer and explanation Correct answer: D
The owner knows the total cost up front, and any change in scope is handled by a variation order.
Question 6 · Civil Engineering (SSC JE) · Construction Management Crashing of a project network means
Choose your answer for question 6 A. cancelling the critical activities B. increasing the float of every activity C. reducing the project duration by adding resources at extra cost D. delaying all non-critical activitiesAnswer and explanation Correct answer: C
The cheapest activities on the critical path are shortened step by step until the target duration is met or no further reduction is possible.
Question 7 · Civil Engineering (SSC JE) · Construction Management Earnest money is a deposit taken from a tenderer
Choose your answer for question 7 A. to show the seriousness of the bid, forfeited if the tenderer backs out B. to pay for the drawings C. as the final payment for the work D. as the contractor’s profitAnswer and explanation Correct answer: A
It is returned to unsuccessful bidders and is converted into part of the security deposit for the successful bidder.
Question 8 · Civil Engineering (SSC JE) · Construction Management An event in a PERT network is
Choose your answer for question 8 A. a point in time at the start or end of an activity that uses no time or resources B. the float available on an activity C. the longest path through the network D. a task that takes time and resourcesAnswer and explanation Correct answer: A
Events are shown as nodes. Activities are the arrows that consume time.
Question 9 · Civil Engineering (SSC JE) · Construction Management For an activity, EST = 5, EFT = 9 and LFT = 14 (days). The total float is
Choose your answer for question 9 A. 4 days B. 9 days C. 5 days D. 0 daysAnswer and explanation Correct answer: C
Total float = LFT − EFT = 14 − 9 = 5 days.
Question 10 · Civil Engineering (SSC JE) · Construction Management For hauling and spreading earth over medium distances, the most suitable machine is a
Choose your answer for question 10 A. backhoe B. dragline C. scraper D. clamshellAnswer and explanation Correct answer: C
A scraper excavates, hauls and spreads in one cycle. Draglines and clamshells dig and place within their reach.
Question 11 · Civil Engineering (SSC JE) · Construction Management In a PERT network, an activity has optimistic, most likely and pessimistic times of 2, 6 and 16 days. The expected time is
Choose your answer for question 11 A. 8 days B. 35 days C. 9 days D. 7 daysAnswer and explanation Correct answer: D
te = (to + 4tm + tp)/6 = (2 + 24 + 16)/6 = 7 days.
Question 12 · Civil Engineering (SSC JE) · Construction Management A project needs an investment of ₹10 lakh and gives a net annual benefit of ₹5 lakh. The simple payback period is
Choose your answer for question 12 A. 50 years B. 2 years C. 5 years D. 20 yearsAnswer and explanation Correct answer: B
Payback = investment / annual net benefit = 10/5 = 2 years.
Question 13 · Civil Engineering (SSC JE) · Construction Management A work of 300 units is to be done by labourers each completing 8 units per day. With 8 labourers working together, the time required is
Choose your answer for question 13 A. 4.7 days B. 37.5 days C. 300 days D. 46.9 daysAnswer and explanation Correct answer: A
Man-days = 300/8 = 37.5. Days = 37.5/8 = 4.7.
Question 14 · Civil Engineering (SSC JE) · Construction Management A project needs an investment of ₹50 lakh and gives a net annual benefit of ₹4 lakh. The simple payback period is
Choose your answer for question 14 A. 200 years B. 0.08 years C. 12.5 years D. 46 yearsAnswer and explanation Correct answer: C
Payback = investment / annual net benefit = 50/4 = 12.5 years.
Question 15 · Civil Engineering (SSC JE) · Construction Management The planned quantity of work up to a date is 25 units and 10 units have been completed. The percentage of planned progress achieved is
Choose your answer for question 15 A. 10% B. 250% C. 40% D. 60%Answer and explanation Correct answer: C
Progress = 10/25 × 100 = 40 percent.
Question 16 · Civil Engineering (SSC JE) · Construction Management An excavator has a bucket capacity of 1.25 m³, a bucket fill factor of 0.85, a cycle time of 25 seconds and a job efficiency of 0.8. Its hourly output is about
Choose your answer for question 16 A. 122.4 m³/hour B. 180 m³/hour C. 2 m³/hour D. 153 m³/hourAnswer and explanation Correct answer: A
Output = (3600/cycle) × capacity × fill factor × efficiency = (3600/25) × 1.25 × 0.85 × 0.8 = 122.4 m³/h.
Question 17 · Civil Engineering (SSC JE) · Construction Management An activity costs ₹50000 in the normal time of 12 days and ₹60000 when crashed to 9 days. The cost slope per day is
Choose your answer for question 17 A. ₹6667 B. ₹1111 C. ₹30000 D. ₹3333Answer and explanation Correct answer: D
Cost slope = (crash cost − normal cost)/(normal time − crash time) = (60000 − 50000)/(12 − 9) = ₹3333 per day.
Question 18 · Civil Engineering (SSC JE) · Construction Management A PERT activity has an optimistic time of 6 days and a pessimistic time of 15 days. Its variance is
Choose your answer for question 18 A. 2.25 B. 13.5 C. 1.5 D. 3Answer and explanation Correct answer: A
σ = (tp − to)/6 = (15 − 6)/6 = 1.5. Variance = σ² = 2.25.
Question 19 · Civil Engineering (SSC JE) · Construction Management A PERT activity has an optimistic time of 6 days and a pessimistic time of 18 days. Its standard deviation is
Choose your answer for question 19 A. 4 B. 2 C. 8 D. 1Answer and explanation Correct answer: B
σ = (tp − to)/6 = (18 − 6)/6 = 2. Variance = σ² = 4.
Question 20 · Civil Engineering (SSC JE) · Construction Management A machine costs ₹60,00,000, has a salvage value of ₹5,00,000 and a service life of 15000 hours. The straight line depreciation per operating hour is
Choose your answer for question 20 A. ₹33.33 B. ₹366.67 C. ₹400 D. ₹433.33Answer and explanation Correct answer: B
Depreciation per hour = (6000000 − 500000)/15000 = ₹366.67.