Engineering - Civil Enginnering

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25.

Select the incorrect statement.                        
A. The progress of work in low level method of mound construction is very slow. B. Barge method of mound construction is economical.
C. In low level method of mound construction, the area of working is limited. D. In staging method of mound cons-truction, the work is not interrupted even during stormy weather.



26.

The difference in height between highest high water and lowest low water is called                        
A. mean range B. maximum range
C. maximum rise D. mean rise



27.

The maximum harbour depth below lowest low water is generally equal to
(i) loaded draft + 1.2 m when bottom is rock
(ii) loaded draft + 1.8 m when bottom is soft
(iii) loaded draft + 1.2 m when bottom is soft
(iv) loaded draft + 1.8 m when bottom is rock Of these statements                        
A. (i) and (ii) are correct B. (i) and (iii) are correct
C. (ii) and (iv) are correct D. (iii) and (iv) are correct




28.

The minimum diameter of turning besin, where ships turn by going ahead and without tug assistance should be
where L is the length of the largest ship to use the port                        
A. L B. 1.5 L
C. 2.0 L D. 4.0 L



29.

The significant wave height is defined is the average height of the                        
A. one - third highest waves B. one - fourth highest waves
C. one - fifth highest waves D. one - tenth highest waves



30.

When a wave strikes a vertical breakwater in deep water, it is reflected back and on meeting another advancing wave of similar amplitude merges and rises vertically in a wall of water. This phenomenon is called                        
A. Surf B. Clapotis
C. Fetch D. Swell



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