Flow of air from one place to the other is caused due to the sum of elevation pr

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Question
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.

Correct Answer

all of the above.

Docks and Harbours problems

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1. 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.

2. 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.

4. 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.

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

6. A low wall built out into the sea more or less perpendicular to the coast line, to resist the travel of sand and shingle along a beach, is called
Options
A. break water
B. break wall
C. groins
D. shore wall.

7. Pick up the correct statement from the following:
Options
A. a harbour without any port complex, is called a refuge harbour
B. a harbour used for fishery, is called fishery harbour
C. the terminal building of a commercial harbour consists of an administrative block, customs clearance and ware-houses.
D. all the above.

8. The low water datum for a lake is defined as the surface of the lake when it is at elevation
Options
A. 180.5 m above M.S.L.
B. 190.5 m above M.S.L.
C. 170.5 m above M.S.L.
D. 200.0 m above M.S.L.

9. Pick up the correct statement from the following:
Options
A. The tides at any place occur a little less than 1 hour later, each succeeding day
B. The difference in time in solar hours and minutes from any lunar transit to the succeeding transit, is called high water level
C. The influence of the earth's gravity alone produces level-tidal less sea
D. The spinning force is maximum at the equator and zero at the poles
E. All of the above.

10. In a wet dock system,
Options
A. minimum required depth of water for the vessels is maintained
B. entrance locks are provided with massive gates
C. the locks of dock gate are operated by means of heavy bascule bridges and connected machinery
D. the cost of construction is quite heavy
E. all the above.

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