Surveying MCQ Exam Questions Answers - Set 22 - ObjectiveBooks

# Practice Test: Question Set - 22

1. The true meridian of a place is the line in which earth's surface is intersected by a plane through
(A) East and west points
(C) North and south geographical poles
(D) North and south magnetic poles

2. The area of any irregular figure of the plotted map is measured with
(A) Pentagraph
(B) Sextant
(C) Clinometer
(D) Planimeter

3. If ‘F’ is the pull applied at the ends of tape in kg, ‘l’ is the length of tape between end marks in metres, ‘w’ is the weight of the tape in kg per metre run, then sag correction
(A) C = w2l3/24F2
(B) C = w3l2/24F2
(C) C = w2l3/24F3
(D) C = 24w2l3/80F3

4. If ‘θ’ is the vertical angle of an inclined sight, ‘δ’ is the angle of tilt of the staff, the error
(A) E = 1 - [cos (θ ± δ)/cosθ]
(B) E = 1 - [sin (θ ± δ)/sinθ]
(C) E = 1 - [tan (θ ± δ)/tanθ]
(D) None of these

5. The construction of optical square is based, on the principle of optical
(A) Reflection
(B) Refraction
(C) Double refraction
(D) Double reflection

6. If Δ is the angle of deflection of a simple curve of radius R, the length of the curve is :
(A) πRΔ/90°
(B) πRΔ/180°
(C) πRΔ/270°
(D) πRΔ/360°

7. Correction per chain length of 100 links along a slope of α° is
(A) 1.5α2/100
(B) 1.5α/100
(C) 1.5α3/100
(D) 1.5α3

8. The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to
(A) The distance between the zero of gradient and the foot of the staff
(B) Twice the distance between the zero of graduation and the foot of the staff
(C) Thrice the distance between the zero of graduation and the foot of the staff
(D) None of the above

9. If α is the angle between the polar ray and the tangent at the point of commencement of a lemniscate curve, the equation of the curve, is
(A) l = k √sin α
(B) l = k √sin 2α
(C) l = k √sin 3α
(D) l = k √tan 2α

10. In tangential tacheometry, an ordinary level staff is used
(A) Leaning towards the instrument for inclined sights upward
(B) Leaning away from the instrument for inclined sights downwards
(C) Vertical in all cases
(D) None of these

11. Stadia techeometry was discovered by James Watt in the year.
(A) 1670
(B) 1770
(C) 1870
(D) 1900

12. Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than
(A) 30 m
(B) 25 m
(C) 20 m
(D) 15 m

13. The distance between the point of intersection of an upgrade +g1% and downgrade g2% and the highest point of the vertical curve of length L, is
(A) L (g1 - g2)/400
(B) L (g1 + g2)/400
(C) L (g1 + g2)/800
(D) L (g1 - g2)/800

14. Surveys which are carried out to provide a national grid of control for preparation of accurate maps of large areas are known
(A) Plane surveys
(B) Geodetic surveys
(C) Geographical surveys
(D) Topographical surveys

15. If +0.8% grade meets -0.7% grade and the rate of change of grade for 30 m distance is 0.05, the length of the vertical curve will be
(A) 600 m
(B) 700 m
(C) 800 m
(D) 900 m

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