851. Critical path_____________?
A. is always longest
B. is always shortest
C. may be longest
D. may be shortest
✅ The correct answer is option A.
Civil Engineering
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852. The reduction in project time normally results in_______________?
A. decreasing the direct cost and increasing indirect cost
B. increasing the direct cost and decreasing the indirect cost
C. increasing the direct cost and indirect cost both
D. decreasing the direct cost and indirect cost both
✅ The correct answer is option B.
853. What estimate would you give for the variance in above problem ?
A. 81
B. 54
C. 36
D. 9
✅ The correct answer is option A.
854. 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 ?
A. Rs. 31050
B. Rs. 34500
C. Rs. 37950
D. Rs. 50000
✅ The correct answer is option A.
855. Free float is mainly used to_________________?
A. identify the activities which can be delayed without affecting the total float of preceding activity
B. identify the activities, which can be delayed without affecting the total float of succeeding activity
C. establish priorities
D. identify the activities which can be delayed without affecting the total float of either the preceding or succeeding activities
✅ The correct answer is option B.
856. 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_________________?
A. 500 cum
B. 1000 cum
C. 1500 cum
D. 2000 cum
✅ The correct answer is option A.
857. Which of the following excavators is most suitable for digging under water?
A. Drag line
B. Hoe
C. Clam shell
D. Dipper shovel
✅ The correct answer is option A.
858. Which of the following surfaces will give highest rolling resistance for a rubber tyred vehicle?
A. Concrete
B. Loose sand
C. Asphalt
D. Firm earth
✅ The correct answer is option B.
859. 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________________?
A. reduce by 200 kg
B. increase by 200 kg
C. increase by 250 kg
D. reduce by 250 kg
✅ The correct answer is option A.
860. For which of the following materials, the output of power shovels for a fixed shovel size will be maximum_______________?
A. Moist loam
B. Good common earth
C. We|l blasted rock
D. Wet sticky clay
✅ The correct answer is option A.