Civil Docks and Harbour Engineering Online Practice - Set 03 - ObjectiveBooks

# Practice Test: Question Set - 03

1. Pick up the correct statement from the following:
(A) The tides at any place occur a little less than 1 hour later, each succeeding day
(B) The influence of the earth's gravity alone produces level-tidal less sea
(C) The spinning force is maximum at the equator and zero at the poles
(D) All of the above

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

3. Pick up the correct statement from the following:
(A) The maritime structures should be designed to withstand wave motion of air
(B) The wind vortex results in conical depression in the air surface
(C) A tube of air rotating at hundreds of kilometers per hour forms a tornado
(D) All of the above

4. At a given port, the fetch is 400 nautical miles, the maximum height of storm wave will be
(A) 2.073 m
(B) 8.169 m
(C) 9.144 m
(D) 6.8 m

5. Pick up the correct statement from the following:
(A) Spring tides are caused at new and full moon
(B) Neap tides are caused when the moon is in her quarters
(C) Spring tides are roughly twice the height of neap tides
(D) All of the above

6. Which of the following is a fixed type mooring accessory?
(A) Bollard
(B) Buoys
(C) Cables
(D) Anchors

7. According to the recommendations of International Navigational Congress in 1912, the ratio of length to width at the entrance for cargo vessels is
(A) 5.5 and 6.0 to 1
(B) 6.2 and 6.8 to 1
(C) 7.4 and 7.8 to 1
(D) 8.2 and 8.5 to 1

8. 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 break water near the harbour entrance.
Of the statements
(A) (i) and (ii) are correct
(B) (ii) and (iii) are correct
(C) (i) and (iii) are correct
(D) (i), (ii) and (iii) are correct

9. Pick up the correct statement from the following:
(A) For nautical purposes, low water level is generally referred to by the navigators
(B) The depth of the bed of the sea from the surface of water is called sounding
(C) The contour lines on the bed of a water body are called fathoms
(D) All the above

10. 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

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