Docks And Harbours MCQs

Question 1

Which one of the following statements is correct ?

Accepted Answer

All the above.

Answer

The soundings are made with respect to the mean low water

Answer

The soundings which are below the datum are written in black on the map

Answer

The spot heights of the features above datum are written in red on the map

Question 2

The heaviest line is used to democrate

Accepted Answer

the high water line

Answer

the low water line

Answer

the limit of swamps

Answer

the direction of current.

Question 3

Which one of the following statements is not relevant to hydrographic survey :

Accepted Answer

none of these.

Answer

establishment of a chain of bench marks near the shore line

Answer

establishment of horizontal control points on the shore

Answer

determination of the sea bed profile

Question 4

The shore line survey includes :

Accepted Answer

all the above.

Answer

depicting the shore line

Answer

depicting the prominent details on shore line

Answer

depicting the high water line

Question 5

Soundings are required for

Accepted Answer

all the above.

Answer

making nautical charts for navigation

Answer

ascertaining the areas subject to scour or silting

Answer

obtaining detailed information for construction

Question 6

A lead line or sounding line

Accepted Answer

all the above.

Answer

is stretched thoroughly when wet before it is graduated

Answer

should be soaked in water for about one hour prior to taking soundings

Answer

is adjusted at regular interval

Question 7

The low water datum for a lake is defined as the surface of the lake when it is at elevation

Accepted Answer

180,5 m above M.S.L.

Answer

190.5 m above M.S.L.

Answer

170.5 m above M.S.L.

Answer

200.0 m above M.S.L.

Question 8

For location of soundings a range and one angle from the shore involves the following operations. Which one is correct ?

Accepted Answer

All the above.

Answer

A range line is established

Answer

The first and the last soundings and every tenth soundings are fixed by angular observations

Answer

The intermediate soundings are fixed by the time intervals

Question 9

Location of soundings by range and one angle is done by the surveyor

Accepted Answer

on the shore or on the boat

Answer

on the shore

Answer

on the boat

Answer

none of the above,