A. equal to true error
B. half the true error
C. two times the true error
D. four times the true error
Related Mcqs:
- The permissible error in chaining for measurement with chain on rough or hilly ground is_____________?
A. 1 in 100
B. 1 in 250
C. 1 in 500
D. 1 in 1000 - The error due to eccentricity of inner and outer axes can be eliminated by________________?
A. reading both verniers and taking the mean of the two
B. taking both face observations and taking the mean of the two
C. double sighting
D. taking mean of several readings distributed over different portions of the graduated circle - If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to_______________?
A. d
B. 1/d
C. d2
D. 1/d2 - The maximum tolerance in a 20 m chain is_______________?
A. ±2 mm
B. ±3 mm
C. ±5 mm
D. ±8 mm - In an internal focussing type of telescope, the lens provided is_______________?
A. concave
B. convex
C. plano-convex
D. plano-concave - Contour interval is_______________?
A. inversely proportional to the scale of the map
B. directly proportional to the flatness of ground
C. larger for accurate works
D. larger if the time available is more - If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant is_______________?
A. 0.1
B. 0.4
C. 0.6
D. 1.33 - If the true bearing of a line AB is 269° 30′, then the azimuth of the line AB is_____________?
A. 0° 30′
B. 89° 30′
C. 90° 30′
D. 269° 30′ - If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is_________________?
A. 99.345 m
B. 100.345 m
C. 100.655m
D. 101.870m - Intersection method of detailed plotting is most suitable for________________?
A. forests
B. urban areas
C. hilly areas
D. plains
