A. A contour is not necessarily a closed curve
B. A contour represents a ridge line if the concave side of lower value con¬tour lies towards the higher value contour
C. Two contours of different elevations do not cross each other except in case of an overhanging cliff
D. All of the above statements are correct
Related Mcqs:
- Select the correct statement?
A. Contour interval on any map is kept constant
B. Direct method of contouring is cheap¬er than indirect method
C. Inter-visibility of points on a contour map cannot be ascertained
D. Slope of a hill cannot be determined with the help of contours - Select the incorrect statement?
A. The true meridians at different places are parallel to each other
B. The true meridian at any place is not variable
C. The true meridians converge to a point in northern and southern hemispheres
D. The maps prepared by national survey departments of any country are based on true meridians - The correction for sag is_________________?
A. always additive
B. always subtractive
C. always zero
D. sometimes additive and sometimes subtractive - Which of the following angles can be set out with the help of French cross staff?
A. 45° only
B. 90° only
C. either 45° or 90°
D. any angle - In the quadrantal bearing system, a whole circle bearing of 293° 30′ can be expressed as______________?
A. W23°30’N
B. N66°30’W
C. S113°30’N
D. N23°30’W - Theodolite is an instrument used for_________________?
A. tightening the capstan-headed nuts of level tube
B. measurement of horizontal angles only
C. measurement of vertical angles only
D. measurement of both horizontal and vertical angles - 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 - Which of the following errors can be neutralised by setting the level midway between the two stations ?
A. error due to curvature only
B. error due to refraction only
C. error due to both curvature and re-fraction
D. none of the above - The type of surveying which requires least office work is________________?
A. tacheomefry
B. trigonometrical levelling
C. plane table surveying
D. theodolite surveying - If in a closed traverse, the sum of the north latitudes is more than the sum of the south latitudes and also the sum of west departures is more than the sum of the east departures, the bearing of the closing line is in the________________?
A. NE quadrant
B. SE quadrant
C. NW quadrant
D. SW quadrant
