Civil Engineering Archives

861. 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________________?

A. 3425 kg

B. 5515 kg

C. 4350 kg

D. 2975 kg

✅ The correct answer is option B.

862. 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______________?

A. should invest in neither of the two projects

B. could invest in either of the two projects

C. should invest in project A

D. should invest in project B

✅ The correct answer is option A.

863. Free float for any activity is defined as the difference between__________________?

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

B. its latest start time and earliest start time

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

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

✅ The correct answer is option A.

864. The minimum width of the fire escape stairs shall be?

A. 1.00 m

B. 1.25 m

C. 1.5 m

D. 2.0 m

✅ The correct answer is option B.

865. 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__________________?

A. 2.3% and 84.1%

B. 97.7% and 84.1%

C. 97.7 % and 15.9%

D. 15.9% and 97.7%

✅ The correct answer is option A.

866. During the construction period, price variation clause in contracts caters to__________________?

A. increase in rates of only important materials

B. variation in cost in materials element, labour element and petrol-oil-lubricant element

C. variation in total cost of the project on an ad hoc basis

D. rate of inflation

✅ The correct answer is option B.

867. At a work site, statistical quality control of concrete means________________?

A. measurement of risks to eliminate failures

B. applying the theory’ of probability to sample testing or inspection

C. reduction in wastage of inspection costs

D. reduction in costs for the removal of defects

✅ The correct answer is option B.

868. 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_______________?

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

✅ The correct answer is option A.

869. 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________________?

A. Rs.1740

B. Rs.3480

C. Rs.5220

D. Rs.6960

✅ The correct answer is option B.

870. 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_______________?

A. 15 minutes

B. 20.143 minutes

C. 21 minutes

D. 27 minutes

✅ The correct answer is option C.