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21
A four wheel truck or whose operating weight is 12000 kg is pulled along a road having a rising slope of 2% at a uniform speed. Assume grade resistance factor = 10 kg/tonne. The tension in the tow cable is 720 kg. The rolling resistance of the road will be
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Answer & Solution
Answer: Option C
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22
A tractor whose weight is 20 tonnes has a drawbar pull of 2500 kg, when operated on a level road having a rolling resistance 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
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Answer & Solution
Answer: Option A
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23
The time with which direct cost does not reduce with the increase in time is known as
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Answer & Solution
Answer: Option B
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24
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
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Answer & Solution
Answer: Option C
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25
For a given size of bucket, the ideal output of a dragline will be least in
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Answer & Solution
Answer: Option D
Solution:
Let's look at each option:
Option A: Moist loam: Loam is generally a good soil type for digging, especially when moist. So, output would be relatively good.
Option B: Sand and gravel: Sand and gravel are loose materials, easy to dig. Output would be high.
Option C: Good common earth: This is also generally good for digging, so output would be decent.
Option D: Wet sticky clay: Wet sticky clay is the most difficult material to dig and load. It sticks to the bucket, making it hard to empty and reducing the amount of material that can be moved per cycle.

Therefore, the answer is Option D: Wet sticky clay because it offers the least ideal digging conditions, leading to the lowest output.
26
Frederick W. Taylor introduced a system of working known as
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Answer & Solution
Answer: Option C
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27
For the execution of a project, a contractor is
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Answer & Solution
Answer: Option D
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28
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?
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Answer & Solution
Answer: Option A
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29
Works costing less than Rs. 20,000 are treated as
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Answer & Solution
Answer: Option D
Solution:
In Civil Engineering, works costing less than Rs. 20,000 are typically categorized as Petty works. These are small-scale projects of minor significance that require minimal resources and planning. Therefore, the correct option is D: Petty works.
30
If the expected time for completion of a project is 10 days with a standard deviation of 2 days, the expected time of completion of the project with 99.9% probability is
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Answer & Solution
Answer: Option D
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