# Docks and Harbor Engineering MCQ Practice Test – Set 01

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## Q1. Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?

(A) When the dock is empty
(B) When the dock is empty with the ship of maximum tonnage
(C) When the dock is full of water
(D) When the dock is dry and is under construction

Answer: (C) When the dock is full of water

## Q2. Pick up the correct statement from the following:

(A) The regular periodic rise and fall of the surface of the sea, is called tide
(B) The average difference in water level between high tide and low tide at a place, is called tidal range
(C) The movement of water caused by the action of tide, is called a tidal current
(D) All of the above

Answer: (D) All of the above

## Q3. 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

Answer: (D) All of the above

## Q4. Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area?

(A) Sea walls, bulk heads and groynes
(B) Sea walls, bulk heads and revetments
(C) Sea walls, revetments and groynes
(D) Bulk heads, revetments and groynes

Answer: (B) Sea walls, bulk heads and revetments

## Q5. 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

Answer: (A) One-third highest waves

## Q6. 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

Answer: (D) 4.0 L

## Q7. In multiple point mooring system, vessel is secured to minimum of

(A) Two points
(B) Four points
(C) Six points
(D) Eight points

Answer: (B) Four points

(A) Mooring post
(B) Bollard
(C) Anchors
(D) Capstan

## Q9. 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

Answer:(D) All of the above

## Q10. As compared to wall type breakwater, mound type breakwater

(A) Requires skilled labor
(B) Requires low maintenance cost
(C) Requires less material
(D) Results in less damage due to gradual failure

Answer: (D) Results in less damage due to gradual failure

## Q11. A ship is berthed in a chamber and lifted by principles of buoyancy, such a chamber is called.

(A) Dry dock
(B) Wet dock
(C) Floating dock
(D) Refuge dock

Answer: (C) Floating dock

## Q12. 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

Answer: (C) 9.144 m

## Q13. In a two lane channel, bottom width of channel is given by

(A) Manoeuvring lane + (2 × Bank clearance lane)
(B) (2 × Manoeuvring lane) + (2 × Bank clearance lane)
(C) (2 × Manoeuvring lane) + (2 × Bank clearance lane + ship clearance lane)
(D) Manoeuvring lane + (2 × Bank clearance lane) + ship clearance lane

Answer: (C) (2 × Manoeuvring lane) + (2 × Bank clearance lane + ship clearance lane)

## Q14. Due to the impact of water wave on a sea shore structure

(A) Hydrostatic pressure coupled with a strong momentary impact is caused
(B) Vibrations are subjected
(C) Internal pressure is developed
(D) All of the above

Answer:(D) All of the above

## Q15. 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

Answer: (D) All of the above

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