The instrument which is used in plane tabling for obtaining horizontal and vertical distances
directly without resorting to chaining, is known as
(A) Plane alidade
(B) Telescopic alidade
(C) Clinometer
(D) Tacheometer

1 Answer

Answer :

(B) Telescopic alidade

Related questions

Description : One of the Lehmann's rules of plane tabling, is  (A) Location of the instrument station is always distant from each of the three rays from the  known points in proportion to their distances  ( ... to the most distant point as the inter-section of the other two rays  (D) None of these 

Last Answer : (A) Location of the instrument station is always distant from each of the three rays from the  known points in proportion to their distances 

Description : State two advantages of telescopic alidade over simple alidade.

Last Answer : Advantages of telescopic alidade : i) Telescopic alidade is more accurate in bisection than simple alidade ii) Telescopic alidade is useful in comparatively longer range objects. iii) It can be easily ... is not possible by simple alidade. iv) It gives quicker bisection which saves time ultimately.

Description : What is advantage of wing telescopic alidade?

Last Answer : Advantage of wing telescopic alidade is as follows 1. The range of sight is more 2. Accurate bisection 3. Inclined line of sight is possible 4. Horizontal distance can be calculated using stadia hairs. 5. Quick levelling is possible due to circular bubble tube as compared to dumpy level.

Description : If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is parallel to the fiducial edge only for (A) Horizontal sights (B) Inclined sights upward (C) Inclined sight downward (D) None of these

Last Answer : (A) Horizontal sights

Description : The instrument used for accurate centering in plane table survey is (A) Spirit level (B) Alidade (C) Plumbing fork (D) Trough compass

Last Answer : (C) Plumbing fork

Description : Subtense bar is an instrument used for (A) Levelling (B) Measurement of horizontal distances in plane areas (C) Measurement of horizontal distances in undulated areas (D) Measurement of angles

Last Answer : (C) Measurement of horizontal distances in undulated areas

Description : The method of plane tabling commonly used for establishing the instrument station is a method of (a) Radiation (b) Intersection* (c) Resection (d) Traversing

Last Answer : (b) Intersection*

Description : 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

Last Answer : (D) Resection

Description : While surveying a plot of land by plane tabling, the field observations (A) And plotting proceed simultaneously (B) And plotting do not proceed simultaneously (C) And recorded in field books to be plotted later (D) All the above

Last Answer : (A) And plotting proceed simultaneously

Description : State the use of alidade in plane table surveying

Last Answer : 1) It is used for sighting the objects to be located.  2) It is used for drawing the rays. 

Description : Which of the instruments is not used in Preliminary survey. (a) Theodelite (b) Tacheometer (c) Dumpy level (d) Plane table (e) None of them*

Last Answer : (e) None of them*

Description : While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the  same position in its tube, it indicates  (A) The rotation axis is vertical  (B) The trunnion ... (C) The line of collimation is perpendicular to vertical axis  (D) None of the above

Last Answer : (A) The rotation axis is vertical

Description : In a square beam loaded longitudinally, shear develops (A) On middle fibre along horizontal plane (B) On lower fibre along horizontal plane (C) On top fibre along vertical plane (D) Equally on each fibre along horizontal plane

Last Answer : (D) Equally on each fibre along horizontal plane (D) Equally on each fibre along horizontal plane

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Last Answer : (D) All planes except horizontal and vertical planes

Description : A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m² when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of ... N/mm² and 0° (C) 0.2 N/mm² and 0° (D) 0.05 N/mm² and 45°

Last Answer : Answer: Option B

Description : Rankine's theory of active earth pressure assumes (A) Soil mass is homogeneous, dry and cohesionless (B) Ground surface is a plane which may be horizontal or inclined (C) Back of the wall is vertical and smooth (D) All the above

Last Answer : Answer: Option D

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Description : The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes (A) With the horizontal (B) With the vertical (C) With the perpendicular to the inclined plane of the soil (D) None of these

Last Answer : Answer: Option A

Description : The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if (A) The area is horizontal (B) The area is vertical (C) The area is inclined (D) All of the above

Last Answer : Answer: Option D

Description : Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about (A) 1 to 2° (B) 2 to 5° (C) 5 to 10° (D) 10 to 15°

Last Answer : (B) 2 to 5°

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

Last Answer : (D) Planimeter

Description : A clinometer is used for (A) Measuring angle of slope (B) Correcting line of collimation (C) Setting out right angles (D) Defining natural features

Last Answer : (A) Measuring angle of slope

Description : ECE Board Exam March 1996 LORAN is a navigation system used primarily for A. approach control B. obtaining fixes over large distances C. blind landing D. automatic collision warning

Last Answer : B. obtaining fixes over large distances

Description : ECE Board Exam March 1996 LORAN is a navigational system used primarily for _____________. A. blind landing B. obtaining your fixes location over large distances C. automatic collision warning D. approach control

Last Answer : B. obtaining your fixes location over large distances

Description : Write any four advantages of intersection method of plane tabling over radiation method of plane tabling.

Last Answer : Advantages of intersection method: 1. Interection method requires less ground distance measurement than radiation method. 2. By this method we can locate inaccessible points which cannot be ... to radiation method, intersection method eliminates undulation error, bisection error and plotting errors.

Description : Explain errors occurred due to manipulation and sighting in plane tabling.

Last Answer : i) The board not being horizontal- This error affects chiefly the measurement of vertical angles. ii) The table not being accurately centered. The plotted position of the occupied station not ... and correct any displacement. v) The defective sighting- The object not being correctly sighted.

Description : Define orientation and principle of plane tabling. 

Last Answer : Orientation: The orientation of plane table means keeping the plane table at all stations parallel to the position it occupied at first station. Principles of plane table survey: 1. The rays drawn from ... same as that of previous station i.e. orientation should be done at each changed station.  

Description : Enlist the methods of plane tabling. 

Last Answer : Method of Surveying with the plane table are : 1) Radiation 2) Intersection 3) Traversing 4) Resection

Description : Explain with neat sketch the procedure of radiation method of plane tabling.

Last Answer : 1. The table is set at suitable station e.g. P from where all stations can be sighted and measured. 2. After centering and leveling, mark station P as P' on sheet. 3. Suppose stations A, B, C, and D are ... marked as pa. 5. Similarly station B, C and D are bisected and marked as b, c and d.

Description : What are the sources of errors in plane tabling?

Last Answer : The following are the sources of errors in plane tabling 1) The board not being horizontal 2) The table not being accurately centered 3) The table not being Correctly oriented 4) The objects ... through the station point 7) Inaccuracy in plotting 8) The expansion and contraction of the paper 

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Description : a tacheometer is fitted with an anal-latic lens (A) Additive constant is 100, multiplying constant is zero (B) Multiplying constant is 100, additive constant is zero (C) Both multiplying and additive constants are 100 (D) Both multiplying and additive constants are 50

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Description : Horizontal distances obtained by thermometric observations (A) Require slope correction (B) Require tension correction (C) Require slope and tension corrections (D) Do not require slope and tension corrections

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Last Answer : b. 30? with vertical

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Last Answer : A. Marconi antenna

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Last Answer : D. Vertical polarization

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