21.
The line normal to the plumb line is known as
A
Horizontal line
B
Level line
C
Datum line
D
Vertical line
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The line normal to the plumb line is known as
Horizontal line
Level line
Datum line
Vertical line
If the smallest division of a vernier is longer than the smallest division of its primary scale, thevernier is known as
Direct vernier
Double vernier
Retrograde vernier
Simple vernier
Which of the following methods of contouring is most suitable for a hilly terrain?
Direct method
Square method
Cross-sections method
Tachometric method
The smaller horizontal angle between the true meridian and a survey line, is known
Declination
Bearing
Azimuth
Dip
The vertical angle between longitudinal axis of a freely suspended magnetic needle and ahorizontal line at its pivot, is known
Declination
Azimuth
Dip
Bearing
Different grades are joined together by a
Compound curve
Transition curve
Reverse curve
Vertical curve
Two contour lines, having the same elevation
Cannot cross each other
Can cross each other
Cannot unite together
Can unite together
Bowditch rule is applied to
An open traverse for graphical adjustment
A closed traverse for adjustment of closing error
Determine the effect of local attraction
None of the above
Straight, parallel and widely spaced contours represent
A steep surface
A flat surface
An inclined plane surface
Curved surface
The size of a plane table is
750 mm × 900 mm
600 mm × 750 mm
450 mm × 600 mm
300 mm × 450 mm