Surveying and Levelling

301. The orthographical projection of a traverse leg upon the reference meridian, is known as

  1. Departure of leg
  2. Latitude to the leg
  3. Co-ordinate of the leg
  4. Bearing of the leg

Correct answer: (B)
Latitude to the leg

302. The 'point of curve' of a simple circular curve, is

  1. Point of tangency
  2. Point of commencement
  3. Point of intersection
  4. Mid-point of the curve

Correct answer: (B)
Point of commencement

303. The power of a lens

  1. Is reciprocal of its focal length
  2. Is positive if it is a convex lens
  3. Is negative if it is a concave lens
  4. Is measured in Diopter

Correct answer: (D)
Is measured in Diopter

304. The probable error of the adjusted bearing at the middle is

  1. ½ r√n
  2. ⅓ r√n
  3. ¼ r√n
  4. ⅕ r√n

Correct answer: (A)
½ r√n

305. The process of determining the locations of the instrument station by drawing re sectors from the locations of the known stations is

  1. Radiation
  2. Intersection
  3. Resection
  4. Traversing

Correct answer: (C)
Resection

306. The properties of autogenous curve for automobiles are given by

  1. True spiral
  2. Cubic parabola
  3. Bernoulli's Lemniscate
  4. Clothoid spiral

Correct answer: (C)
Bernoulli's Lemniscate

307. The R.L, of the point 'A' which is on the floor is 100 m and back sight reading on 'A' is 2.455 m. If the foresight reading on the point 'B' which on the ceiling is 2.745 m, the R.L. of point 'B' will be

  1. 94.80 m
  2. 99.71 m
  3. 100.29 m
  4. 105.20 m

Correct answer: (D)
105.20 m

308. The radius of a simple circular curve is 300 m and length of its specified chord is 30 m. The degree of the curve is

  1. 5.73°
  2. 5.37°
  3. 3.57°
  4. 3.75°

Correct answer: (A)
5.73°

309. The radius of curvature of the arc of the bubble tube is generally kept

  1. 10 m
  2. 25 m
  3. 50 m
  4. 100 m

Correct answer: (D)
100 m

310. The Random errors tend to accumulate proportionally to

  1. Numbers of operations involved
  2. Reciprocal of operations involved
  3. Square root of the number of operation involved
  4. Cube root of the number of operation involved

Correct answer: (C)
Square root of the number of operation involved

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