- 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
Surveying
-
Theodolite is an instrument used for
-
In field astronomy, the quantities observed are entirely
- A. Lengths
- B. Angles
- C. Heights
- D. All of these
-
Height of instrument method of levelling is
- A. more accurate than rise and fall method
- B. less accurate than rise and fall method
- C. quicker and less tedious for large number of intermediate sights
- D. none of the above
-
Select the correct statement.
- 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.
-
Longitudes are measured from 0° to
- A. 180° eastward
- B. 180° westward
- C. 180° east or westward
- D. 360° eastward
-
The great circle which passes through the zenith, nadir and the poles, is known as
- A. Meridian
- B. Vertical circle
- C. Prime vertical
- D. None of these
-
Homologous points are
- A. Opposite corners of a photograph
- B. Nodal points of the camera lens
- C. Corresponding points on the ground and photograph
- D. Plumb points of stereo pair of photographs
-
Agate cap is fitted with a
- A. cross staff
- B. level
- C. chain
- D. prismatic compass
-
The position of the sun when its north declination is maximum is known as
- A. Vernal equinox
- B. Autumnal equinox
- C. Summer solstice
- D. Winter solstice
-
A star is said to elongate
- A. When the star momentarily moves vertically
- B. When the angle at the star of the spherical triangle is 90°
- C. When the star
- D. All the above