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WorksheetsDay 112-Jan 22-worksheet-Btech-Tacheomtry
Total questions: 15
Worksheet time: 8mins
Tacheometry is most suitably adopted for surveying in:
Flat and level terrains
Thickly forested areas only
Undulated and rough terrains
Urban building layouts
The primary objective of tacheometric surveying is the preparation of:
Cadastral maps
Setting-out plans
Contour maps or plans
Detailed triangulation maps
Which telescope eliminates the additive constant by design?
Internal focusing telescope
Simple external focusing telescope
External focusing telescope with anallactic lens
Movable hair telescope
The value of the multiplying constant (k) of a standard tacheometer is generally taken as:
50
75
100
200
Which tacheometric method is rarely used due to its slow and inconvenient nature?
Fixed hair method
Tangential method
Movable hair method
Stadia method with anallactic lens
In the fixed hair (stadia) method, which of the following remains constant?
Staff intercept
Stadia interval
Horizontal distance
Vertical angle
For a line of sight inclined at angle θ with staff held vertical, the horizontal distance is given by:
D = ks + C
D = ks cos θ
D = ks cos² θ + C cos θ
D = ks sin θ
Tacheometry is a rapid method of surveying but is generally less accurate than chaining and levelling.
True
False
The difference between readings of top and bottom stadia hairs on the staff is called (a) .
The distance equation of tacheometry is written as (a) .
The additive constant C is numerically equal to (a) .
The basic principle of stadia surveying is based on the property of (a) triangles.
The stadia rod generally has a length varying from __________ m to __________ m.
(a)
In tangential tacheometry, distances are measured by observing (a) angles to vanes.
In the movable hair method, the staff intercept is (a) .
