In setting up a plane table at any station
(a) Leveling is done first
(b) Centering is done first
(c) Both leveling and centering are done simultaneously *
(d) Orientation is done first

1 Answer

Answer :

c) Both leveling and centering are done simultaneously *

Related questions

Description : In setting up a plane table at any station (A) Levelling is done first (B) Centering is done first (C) Both levelling and centering are done simultaneously (D) Orientation is done first

Last Answer : (C) Both levelling and centering are done simultaneously

Description : The operation of revolving a plane table about its vertical axis so that all lines on the sheet become parallel to corresponding lines on the ground, is known (A) Levelling (B) Centering (C) Orientation (D) Setting

Last Answer : (C) Orientation

Description : After fixing the plane table to the tripod, the main operations which are needed at each plane table station are (i) Levelling (ii) Orientation (iii) Centering The correct sequence of these operations is (A) (i), (ii), (iii) (B) (i), (iii), (ii) (C) (iii), (i), (ii) (D) (ii), (iii), (i)

Last Answer : (B) (i), (iii), (ii)

Description : While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of ... true position will be (A) 0.02 cm (B) 0.15 cm (C) 0.2 cm (D) 0.1 cm

Last Answer : (B) 0.15 cm

Description : Dumpy level is most suitable when (a) The instrument is to be shifted frequently (b) Fly leveling is being done over long distance (c) Many readings are to be taken from a single setting of the instrument* (d) All of the above

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Last Answer : (e) Intersection*

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Last Answer : (C) Given points are inaccessible

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Description : Describe any one method of orientation of plane table surveying

Last Answer : Orientation by back sighting method: This method is accurate and is always preferred. Procedure: 1.Suppose A and B are two stations.The plane table is set up over A. The table is leveled by spirit level ... are perfect and needle is exactly at 0-0 , the orientation is said to be perfect.

Description : Describe back sighting method of orientation of plane table surveying.

Last Answer : Backsight method of orientation 1. Assume we have to orient the table at next station B' represented on paper by point b'. 2.the line ba' is drawn on previous station A'. 3.the alidade is kept ... A'. 4. When the plotted line ab' coincides with line AB' and table will be oriented.

Description : Explain Orientation of plane table by Back-sighting Method.

Last Answer : Ans:- The method of setting up the plane table at each of the successive stations parallel to the position it occupied at the starting station is known as an Orientation. Orientation must be done when ... and bisection of the ranging rod at a are perfect then orientation is said to perfect.  

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Last Answer : Orientation of plane table: It means placing table in parallel positions at all stations (or at successive station) 1. Orientation using trough compass: Here north direction is marked at first station ... rotated till ranging rod at previous station is exactly bisected. The table is then clamped. 

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