Questions and answers for exam Preparation

MCQs

Total Questions : 242 | Page 20 of 25 pages

Question 191. 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.Select your answer based on the coding system given below:

A is false but R is true.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.

Discuss Question

Answer: Option B. -> Both A and R are true and R is the correct explanation of A.

Question 192. If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by

0.6 Hs and 1.87 Hs
0.6 Hs and 1.67 Hs
1.27 Hs and 1.67 Hs
1.27 Hs and 1.87 Hs

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Answer: Option A. -> 0.6 Hs and 1.87 Hs

Question 193. Consider the following statements in regard to Beaufort scale for wind speeds,(i) The Beaufort number ranges from 1 to 12.(ii) Higher Beaufort number indicates higher speed of wind,(iii) Beaufort number for calm is smallest and for hurricane is highest of these statements

(i) and (iii) are correct
(i) and (ii) are correct
(i), (ii) and (iii) are correct
(ii) and (iii) are correct

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Answer: Option D. -> (ii) and (iii) are correct

Question 194. By increasing the rise of lock-gates,(i) The length of the lock gate will increase(ii) Transverse stress due to water pressure on the gate will increase(iii) Compressive force on the gate will increase

Only (iii) is correct
Only (ii) is correct
(i) and (iii) are correct
(i) and (ii) are correct

Discuss Question

Answer: Option D. -> (i) and (ii) are correct

Question 195. The difference in height between highest high water and lowest low water is called

Mean range
Maximum range
Mean rise
Maximum rise

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Answer: Option B. -> Maximum range

Question 196. Consider the following statements.(i) Fender is the cushion provided on the face of the jetty for ships to come in contact,(ii) Slip is the space of water area between two adjacent piers where ships are berthed,(iii) Pier head is a structure constructed near the tip of a break water near the harbour entrance. Of the statements

(ii) and (iii) are correct
(i) and (ii) are correct
(i), (ii) and (iii) are correct
(i) and (iii) are correct

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Answer: Option C. -> (i), (ii) and (iii) are correct

Question 197. Dead weight tonnage of a ship(i) varies with latitude and season(ii) is more than displacement tonnage(iii) is the difference between displacement load and displacement light of these statements

Only (iii) is correct
(i) and (ii) are correct
(i) and (iii) are correct
(ii) and (iii) are correct

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Answer: Option C. -> (i) and (iii) are correct

Question 198. Assertion A : Large size stones are required in stone revetment in shore protection.Reason R : Resistance of stone to wave force is proportional to its volume and wave force is proportional to the exposed area of the stone.Select your answer based on the coding system given below.

A is true but R is false.
Both A and R are true but R is not a correct explanation of
A is false but R is true.
Both A and R are true and R is the correct explanation of

Discuss Question

Answer: Option D. -> Both A and R are true and R is the correct explanation of

Question 199. 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.Select your answer based on the coding system given below:

A is false but R is true.
A is true but R is false.
Both A and R are true but R is not the correct explanation of
Both A and R are true and R is the correct explanation of

Discuss Question

Answer: Option D. -> Both A and R are true and R is the correct explanation of

Question 200. Assertion A : Marine structures are made specially bulky and strong.Reason R : Sea insects result in undermining of the hardest and the soundest building material.Select your answer based on the coding system given below: