Imp questions on surveying for civil engineering aspirants part 06

1) The construction of optical square is based, on the principle of optical

A. reflection

B. refraction

C. double refraction

D. double reflection.

Answer:  D

2) The 'fix' of a plane table from three known points, is good, if

A. middle station is nearest

B. middle station is farthest

C. either the right or left station is nearest

D. none of these.

Answer:  A

3) Diurnal variation of magnetic declination is

A. greater at equator than nearer the poles

B. less at equator than nearer the poles

C. less in summer than in winter

D. same at all latitudes and during different months.

Answer: B

4) clinometer is used for

A. measuring angle of slope

B. correcting line of collimation

C. setting out right angles

D. defining natural features.

Answer: A

5) Which one of the following procedures for getting accurate orientation is the most distinctive feature of the art of plane tabling

A. radiation

B. intersection

C. traversing

D. resection.

Answer: D

6) The minimum range for sliding the focusing lens in the internal focusing telescope for focusing at all distances beyond 4 m is

A. 5 mm

B. 10 mm

C. 15 mm

D. 20 mm.

Answer: D

7) The 'point of the curve' of a simple circular curve, is

A. point of tangency

B. point of commencement

C. point of intersection

D. mid-point of the curve

Answer: B

8) Cross-staff is used for

A. setting out right angles

B. measuring contour gradient

C. taking levels

D. measuring distances

E. none of these

Answer:  A

9) If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as

A. direct vernier

B. double vernier

C. retrograde vernier

D. simple vernier.

Answer: C

10) Ramsden eye-piece consists of

A. two convex lenses short distance apart

B. two concave lenses short distance apart

C. one convex lens and one concave lens short distance apart

D. two plano-convex lenses short distance apart, with the convex surfaces facing each other.

Answer: D

11) The distance between steps for measuring down hill to obtain better accuracy

A. decreases with decrease of slope

B. increases with increase of slope

C. decreases with increase of slope

D. decreases with decrease of weight of the chain.

Answer: C

12) The tangent to the liquid surface in a level tube, is parallel to the axis of the level tube at

A. every point of the bubble

B. either end of the bubble

C. the mid-point of the bubble

D. no where.

Answer: C

13) The slope correction may be ignored if

A. the slope of the ground is less than 3°

B. to slope of the ground is say 1 in 19

C. both (a) and (b)

D. neither (a) nor (b)

Answer: C

14) Pick up the correct statement from the following :

A. if the image of the object does not fall on the plane of the cross-lines, parallax exists

B. parallax has nothing to do with the eyepiece

C. the eyepiece is adjusted for clear vision of the cross hairs

D. all the above.

Answer:  D

15) The whole circle bearing of a line is 290°. Its reduced bearing is

A. N 20° E

B. N 20° W

C. N 70° W

D. S 70° E

Answer: C

16) The orthographical projection of a traverse leg upon the reference meridian, is known as

A. departure of leg

B. latitude to the leg

C. co-ordinate of the leg

D. bearing of the leg.

Answer: B

17) Which one of the following mistakes/errors may be cumulative + or - :

A. bad ranging

B. bad straightening

C. erroneous length of chain

D. sag.


18) Volume of the earth work may be calculated by

A. mean areas

B. end areas

C. Prismoidal formula

D. Trapezoidal

E. all the above.

Answer: E

19) If a tacheometer is fitted with an anal-latic lens

A. additive constant is 100, multiplying constant is zero

B. multiplying constant is 100, the additive constant is zero

C. both multiplying and additive constants are 100

D. both multiplying and additive constants are 50.

Answer: B

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