Civil Engineering MCQs

Q:

Which of the following is a disadvantage of CD works carrying drainage over the canal?

A) The arrangement is generally constructed when the drain is very big as compared to the section of the canal B) The damage caused by floods is not rare
C) The CD works are more liable to damage than the earthwork of the canal D) The perennial canal is not open to inspection or maintenance
 
Answer & Explanation Answer: D) The perennial canal is not open to inspection or maintenance

Explanation: The main advantage of this arrangement is that the CD works are less liable to damage than the earthwork of the canal. The major disadvantage is that the inspection road cannot be provided along the canal hence, it is not open to inspection or maintenance.

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3
Q:

The number of inlets should be equal to the number of outlets.

A) True B) False
 
Answer & Explanation Answer: B) False

Explanation: It is not necessary to have equal values of escaped discharge and admitted discharge. There can be fewer outlets for more number of inlets. The outlet can be combined with some other work where a separate arrangement is provided for escaping at a small extra cost.

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4
Q:

In which of the following arrangement, the perennial drainage discharge is advantageously used?

A) Level crossing B) Inlets and Outlets
C) Syphon D) Aqueduct
 
Answer & Explanation Answer: A) Level crossing

Explanation: In level-crossing, a regulator is provided across the drainage to control the discharge. When there are no floods the torrent regulator is kept closed and during floods, the regulator is opened so as to pass the flood discharge.

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3
Q:

Which of the following is a disadvantage of CD works carrying the canal over the discharge?

A) The damage caused by floods is not rare B) The canal is not open for inspection and maintenance
C) The CD works are less liable to damage than the earthwork of the canal D) During heavy floods, the foundations are susceptible to scour or waterway of the drain may get choked
 
Answer & Explanation Answer: D) During heavy floods, the foundations are susceptible to scour or waterway of the drain may get choked

Explanation: In this arrangement, the canal is above the ground hence it is open to inspection. The damage done by light floods is rare. The CD works are less liable to damage than the earthwork of the canal when the canal passes below the drainage.

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4
Q:

In a syphon aqueduct provided with a pucca bottom floor, the uplift will occur on __________

A) the roof slab B) the bottom floor
C) both the roof slab as well as the bottom floor D) nowhere since the flow is free in the canal as well as in the drainage channel
 
Answer & Explanation Answer: B) the bottom floor

Explanation: The uplift pressure on the floor of the aqueduct is caused due to seepage of water from the canal to the drainage and the sub-soil water table in the drainage bed. The drain bed of the aqueduct is generally depressed and provided with the pucca floor.

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3
Q:

All the necessary calculations will be done before setting the curve.

A) True B) False
 
Answer & Explanation Answer: B) False

Explanation: The determination of tangent length, curve length, tangent distance will be done after setting of the curve, but not before. The curve setting process actually involves in the determination of these. By using the required data further process can be done.

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Category: Civil Engineering MCQs
Sub Category: Surveying Mcqs

3
Q:

Find the chainage of second tangent point, if the chainage at the point of compound curve is given as 2345.87m and the curve length can be given as 568.54m.

A) 2941.41 m B) 9214.41 m
C) 2914.14 m D) 2914.41 m
 
Answer & Explanation Answer: D) 2914.41 m

Explanation: Not available for this question

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Category: Civil Engineering MCQs
Sub Category: Surveying Mcqs

2
Q:

The crossing arrangement preferably made at the junction of a huge canal and a river stream carrying a short-lived high flood discharge at almost equal bed levels is a __________

A) super passage B) aqueduct
C) level crossing D) canal syphon
 
Answer & Explanation Answer: C) level crossing

Explanation: This is a type of cross-drainage works in which the canal water and the drain get intermixed. The arrangement is generally adopted when a huge canal crosses a large torrent carrying a high short-lived flood.

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