Docks and Harbours problems
- 1. Pick up the correct statement from the following:
Options- A. An artificial barrier which makes the enclosed area safe for anchorage of ships, is known as break water
- B. The break water whose inside is used as a plateform for loading and unloading is called a mole
- C. The length of the quay wall is governed by the length of the largest vessel likely to be berthed
- D. All the above. Discuss
Correct Answer: All the above.
- 2. According to the recommendations of International Navigational Congress in 1912, the ratio of length to width at the entrance for passenger vessels is :
Options- A. 7.25 to 1
- B. 7.80 to 1
- C. 8.11 to 1
- D. 8.44 to 1 Discuss
Correct Answer: 8.44 to 1
- 3. The fixed mooring does not require
Options- A. mooring post
- B. bollard
- C. anchors
- D. capstan. Discuss
Correct Answer: anchors
- 4. If F is the fetch, the straight line distance of open water available in kilometres, the height of the wave in metres is
Options- A. 0.15 F
- B. 0.20 F
- C. 0.28 F
- D. 0.34 F Discuss
Correct Answer: 0.34 F
- 5. At a place the shore line is along North West-South East. The wind is blowing from the north. The littoral drift will be along
Options- A. south east
- B. south
- C. south west
- D. west
- E. north west Discuss
Correct Answer: south east
- 6. Cretans :
Options- A. are the harbours established on the island south east of Greek mainland
- B. are the natives of crete, an island south of Greek mainland
- C. are the plants, grown in the neighbourhood of harbours
- D. none of the above. Discuss
Correct Answer: are the natives of crete, an island south of Greek mainland
- 7. The wavelength is computed by Bertin's formula (where T is the period in seconds).
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 8. The shore line survey includes :
Options- A. depicting the shore line
- B. depicting the prominent details on shore line
- C. depicting the high water line
- D. depicting the low water line
- E. all the above. Discuss
Correct Answer: all the above.
- 9. P and Q are two stations on the shore line at distance d. If the angle between Q and the boat O and P is a and the angle between P and Q at boat O is ?, the x and y. Coordinate along PQ and perpendicular to PQ from O are :
Options- A.
- B.
- C.
- D. none of the above. Discuss
Correct Answer:
- 10. Flow of air from one place to the other is caused due to
Options- A. the sum of elevation
- B. pressure head
- C. velocity head
- D. all of the above. Discuss
Correct Answer: all of the above.
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