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- Question
In tropical regions,
Options- A. the surface gets heated more effectively than the arctic areas
- B. after heating, the air becomes lighter and is displaced by cool air from the polar regions
- C. the rising tropical air flows towards the polar region in the upper strata
- D. all of the above.
- Correct Answer
- all of the above.
- 1. For large vessels, the buoys are strengthened by connecting it to a number of anchors having
Options- A. one legged mooring
- B. two legged mooring
- C. three legged mooring
- D. four legged mooring
- E. all the types as above. Discuss
- 2. Pick up the correct statement from the following:
Options- 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. Flood tides and Ebbstides are caused after 24 hours and 50 minutes corresponding to a lunar day
- E. All of the above. Discuss
- 3. Location of soundings by two angles from the shore requires establishing
Options- A. one range line parallel to shore
- B. one range line perpendicular to shore
- C. two range lines mutually perpendicular
- D. no range line. Discuss
- 4. On the sea shore structures, the water wave impact causes
Options- A. direct compressive force due to its horizontal component
- B. shear force due to deflected vertical force
- C. compressive force due to collapse of the wave
- D. suction force due to water returning after striking
- E. all of the above. Discuss
- 5. The variation of atmospheric potential is caused due to :
Options- A. difference in temperature over the surface of the earth
- B. change in the density of air
- C. both (a) and (b)
- D. neither (a) nor (b). Discuss
- 6. The floating mooring does not require
Options- A. cables
- B. anchors
- C. bollard
- D. buoy. Discuss
- 7. Pick up the correct statement from the following:
Options- 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 kilometres per hour forms a tornado
- D. all of the above. Discuss
- 8. Location of soundings by range and one angle is done by the surveyor
Options- A. on the shore
- B. on the boat
- C. on the shore or on the boat
- D. none of the above. Discuss
- 9. A dock:
Options- A. is a marine structure for berthing of vessels for loading and unloading cargo and passengers
- B. is an artificial basin for vessels where the variation of water in the shore does not affect the level of water
- C. is provided with a dock gate
- D. is provided with an arrangement to pump out water when required
- E. all the above. Discuss
- 10. According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n1) on an other medium (refractive index m2);
Options- A. the angle of incidence is equal to the angle of refraction
- B. the angle of refraction (?r) is given by
- C. Both (a) and (b)
- D. neither (a) nor (b) Discuss
Docks and Harbours problems
Search Results
Correct Answer: all the types as above.
Correct Answer: All of the above.
Correct Answer: no range line.
Correct Answer: all of the above.
Correct Answer: both (a) and (b)
Correct Answer: bollard
Correct Answer: all of the above.
Correct Answer: on the shore or on the boat
Correct Answer: all the above.
Correct Answer: the angle of refraction (?r) is given by
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