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Docks and Harbours
Comments
Question
Depth of borings for soil investigation, is generally kept below low water level
Options
A. 30 m
B. 35 m
C. 45 m
D. 40 m
Correct Answer
45 m
Docks and Harbours problems
Search Results
1. Pick up the incorrect statement from the following:
Options
A. As a wave of sea water approaches the coast line, it is generally accompanied by a drift of water in the direction of wave advance
B. The on-shore wind helps to produce wave action as well as rise of M.S.L.
C. A falling hydraulic gradient occurs in the direction of the wave
D. The wave while receding carries finer particles out to deep water.
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Correct Answer: A falling hydraulic gradient occurs in the direction of the wave
2. A harbour is a place where
Options
A. ships get shelter and protection against destructive forces due to sea waves
B. facilities are provided for receiving cargo and passengers
C. port buildings are constructed for commercial purposes
D. all the above.
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Correct Answer: all the above.
3. Littoral drift
Options
A. is the raised line of sand, parallel to the sea coast
B. is the slow movement of surface water at sea caused by the wind
C. is a current parallel to the shore, caused due to tangential component of the wind
D. is a current perpendicular to the shore line caused due to wind.
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Correct Answer: is a current parallel to the shore, caused due to tangential component of the wind
4. Surf zone is :
Options
A. the fathom line of 10 m depth
B. the fathom line of 5 m depth
C. the swell of the sea breaking on the shore or reefs
D. the coast line attacked by the waves.
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Correct Answer: the swell of the sea breaking on the shore or reefs
5. The beach is built:
Options
A. with largest material locally available to the waves
B. with large material locally available to the waves
C. with fine material locally available to the waves
D. with finest material locally available to the waves.
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Correct Answer: with largest material locally available to the waves
6. A roadstead :
Options
A. is a protected area of water where boats can move safely
B. is the end of the road at the harbour
C. may be protected by break water walls
D. none of these.
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Correct Answer: is a protected area of water where boats can move safely
7. Which one of the following errors is produced by platform characteristics of the sensor?
Options
A. altitude variation
B. altitude
C. orbit drift
D. All of these
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Correct Answer: All of these
8. The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:
Options
A. ozone hole
B. atmospheric window
C. ozone window
D. black hole
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Correct Answer: atmospheric window
9. The phase difference of the waves 1 and 2 at A in the given figure is :
Options
A. ?/4
B. ?/2
C. ?
D. 3?/2
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Correct Answer: ?/2
10. If 0 is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to :
Options
A. sin
2
?
B. cos
2
?
C. sec
2
?
D. tan
2
?
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Correct Answer: sec
2
?
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