Surveying and Levelling

201. Profile levelling is usually done for determining

  1. Contours of an area
  2. Capacity of a reservoir
  3. Elevations along a straight line
  4. Boundaries of property

Correct answer: (C)
Elevations along a straight line

202. Prolongation of chain line across an obstruction in chain surveying, is done by

  1. Making angular measurements
  2. Drawing perpendiculars with a chain
  3. Solution of triangles
  4. All the above

Correct answer: (B)
Drawing perpendiculars with a chain

203. Ramsden eye-piece consists of

  1. Two convex lenses short distance apart
  2. Two concave lenses short distance apart
  3. One convex lens and one concave lens short distance apart
  4. Two Plano-convex lenses short distance apart, with the convex surfaces facing each other

Correct answer: (D)
Two Plano-convex lenses short distance apart, with the convex surfaces facing each other

204. Ranging in chain survey means

  1. Looking at an isolated point not on the line
  2. Establishing an intermediate point on the line
  3. Determining the distance between end points
  4. Determining the offset distance

Correct answer: (B)
Establishing an intermediate point on the line

205. Ranging is an operation of

  1. Reconnaissance
  2. Judging the distance
  3. Determination of slope
  4. Establishing intermediate points between terminals

Correct answer: (D)
Establishing intermediate points between terminals

206. Rankine's deflection angle in minutes is obtained by multiplying the length of the chord by

  1. Degree of the curve
  2. Square of the degree of the curve
  3. Inverse of the degree of the curve
  4. None of these

Correct answer: (A)
Degree of the curve

207. Reduced bearing of a line is an angle between

  1. North line and given line measured clockwise
  2. North line and given line measured anticlockwise
  3. East or west and the given line
  4. Given line and the part of the meridian whether N end or S end, lying adjacent to it

Correct answer: (D)
Given line and the part of the meridian whether N end or S end, lying adjacent to it

208. Refraction correction

  1. Completely eliminates curvature correction
  2. Partially eliminates curvature correction
  3. Adds to the curvature correction
  4. Has no effect on curvature correction

Correct answer: (B)
Partially eliminates curvature correction

209. Removal of parallax, may be achieved by focussing

  1. The objective
  2. The eye-piece
  3. The objective and the eye-piece
  4. None of these

Correct answer: (C)
The objective and the eye-piece

210. Resolving power of a telescope depends on

  1. The diameter of the aperture
  2. The pupil aperture of the eye
  3. The diameter of the object glass
  4. All the above

Correct answer: (D)
All the above

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