Civil Engineering MCQs

Page No. 106

If Hs is the significant wave height, then the average wave height and highest wave height respectively are given by_______________?


a 0.6 Hs and 1.67 Hs


b0.6 Hs and 1.87 Hs


c1.27 Hs and 1.87 Hs


d1.27 Hs and 1.67 Hs


View Answer 0.6 Hs and 1.87 Hs

Assertion A : Basin walls have to be of much grater height than dock walls. Reason R : Tidal basins are subject to fluctuations of levels due to tidal variations?


aBoth A and R are true and R is the correct explanation of A.


bBoth A and R are true but R is not correct explanation of A


cA is true but R is false.


dA is false but R is true.



Consider the following statements in regard to Beaufort scale for wind speeds______________?


aThe Beaufort number ranges from 1 to 12.


bHigher Beaufort number indicates higher speed of wind,


cBeaufort number for calm is smallest and for hurricane is highest


d(B) and (C) are correct



Dead weight tonnage of a ship_______________?


avaries with latitude and season


bIs more than displacement tonnage


cis the difference between displacement load and displacement light


donly A and C


View Answer only A and C

The maximum harbour depth below lowest low water is generally equal to_________________?


aloaded draft + 1.2 m when bottom is rock


bloaded draft + 1.2 m when bottom is soft


cloaded draft + 1.8 m when bottom is rock


d (B) and (C) are correct



Assertion A : Depth and width required at the entrance to a harbour are more than those required in the channel. Reason R : The entrance to a harbour is usually more exposed to waves as compared to the harbour itself__________________?


aBoth A and R are true and R is the correct explanation of A.


bBoth 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.



In basins subjected to strong winds and tide, the length of the berthing area should not be less than____________________?


athe length of design vessel


bthe length of design vessel + 10% clearance between adjacent vessels


c the length of design vessel + 20% clearance between adjacent vessels


dtwice the length of design vessel



As per Berlin’s formula, the length of wave in metres is given by_______________?


a 1.3412


b1.5612


c 1.7412


d 1.9412


View Answer 1.5612

In a two lane channel, bottom width of channel is given by_______________?


aManoeuvring lane + 2 x Bank clearance lane


b2 x Manoeuvring lane + 2 x Bank clearance lane


c 2 x Manoeuvring lane + 2 x Bank clearance lane + ship clearance lane


dManoeuvring lane + 2 x Bank clearance lane + ship clearance lane



Select the incorrect statement ?


aThe progress of work in low level method of mound construction is very slow.


bBarge method of mound construction is economical.


cIn low level method of mound construction, the area of working is limited.


dIn staging method of mound cons-truction, the work is not interrupted even during stormy weather



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