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48.

Which of the following methods of contouring is most advantageous in case of a hilly
terrrain?

(A) Direct method (B) Square method
(C) Cross sections method (D) Tacheometric method

Sensitiveness of a level tube can be increased by
(A) Increasing the viscosity of liquid

(B) Decreasing the length of bubble

(C) Increasing the diameter of the tube

(D) Increasing the roughness of the walls

Staff reading recorded as fore sight is 0.500 taken on a station of Reduced level
302.250. If RL of benchmark is 300.000 calculated value of the Back sight is

(A) 2.250 (B) 2100
(C) 2.050 (D) 2.750

The staff reading taken at stations A, B, C, D from a single setup of level are 0.920,
2.255, 1.805, 1.700. Choose the correct statement from the following

(A) Ais the highest station (B) B is the highest station
(C) C is lower than B (D) D is higher than A

A back sight reading of 1.655 was observed at a point P whose RL is 100.000m. Find
the RL of a point Q at which the observed staff reading is 1.500.

(A) 101.655 (B) 100.155
(C) 101.500 (D) 100.000

A staff is held at a distance of 1400m from a level. If the reading on the staff is
3.693 m, the reading corrected for curvature and refraction combined is

(A) 3.561 (B) 3.825
(C) 3.847 (D) 3.715

In which of the following cases several contours coincide, horizontal equivalent
being zero?

(A) Overhanging cliff (B) Hill

(C) Vertical Cliff (D) Valley

Which of the following is not a method for interpolation of contours?
(A) Spot levelling (B) Graphical method
(C) Arithmetic method (D) Estimation

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