Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than 25 m

L

Local attraction in compass surveying may exist due to

Presence of magnetic substances near the instrument

Latitude of a place is the angular distance from

None of these.

Lines connecting points of equal air temperature are known as

Isotherms

M

Magnetic bearing of a survey line at any place

Varies differently in different months of the year

Magnetic declination at any place

Does not remain constant

Magnetic North lies in what direction relative to geographic North if the magnetic

declination is 14 degrees East?

Degrees east of geographic north

N

Normal tension is that pull which

Neutralizes the effect due to pull and sag

Number of links per metre length of a chain are

O

One of the tacheometric constants is additive, the other constant, is

Multiplying constant

Offsets are measured with an accuracy of 1 in 40. If the point on the paper from both sources of error (due to angular and measurement errors) is not to exceed 0.05 cm on a scale of 1 cm = 20 m, the maximum length of offset should be limited to

M

One minute of longitude equals

Seconds

One degree of latitude equals

Seconds

One degree of longitude equals

Minutes

On a 7.5 minute quadrangle where can information about magnetic declination be found?

Lower left margin

On a topo map, how would you determine if a feature was a hill or a valley?

A valley would have close together contour lines with hachures

On a topographic map, the closer the contour lines the

Steeper the slope

P

Places having same latitude

All

Pick up the correct statement from the following:

All the above.

Principle of Chaining is

Triangulation

Pick up the correct statement from the following:

All

Perpendicularity of an offset may be judged by eye, if the length of the offset is

M

Pick up the incorrect statement from the following:

An increase in temperature causes a tape to increase in length and the measured distance is too large

Pick up the correct statement from the following:

All

Pick up the correct statement from the following:

All the above.

Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following

Plan table surveying

Pick up the correct statement from the following:

All the above.

Pick up the correct statement from the following:

All the above.

R

Resolving power of a telescope depends on

All

Refraction correction

Partially eliminates curvature

S

Select the correct statement.

Two contours of different elevations do not cross each other except in case of an overhanging cliff.

Sensitiveness of a level tube is designated by

Radius of level tube

Select the correct statement.

Contour interval on any map is kept constant.

Staff readings on pegs x and y from X station are 1.755 m and 2.850 m, and from station Y on staff head at Y and X are 0.655 m and 1.560 m. If reduced level of X is 105.5 m, the reduced level of Y is

M

Straight, parallel and widely spaced contours represent

An inclined plane surface

Surveys which are carried out to depict mountains, rivers, water bodies, wooded areas and other cultural details, are known as

Topographical surveys

Systematic errors are those errors

Whose effects are cumulative and can be eliminated

Дата добавления: 2015-10-29