A horizontal angle ^θ is measured by four different surveyors multiple times and the values reported are given below.

The Most probable value of the angle ^θ (in degree, round off to two decimal places is _______________

A Bench Marck (BM) with Reduced Level (RL) = 155.305 m has been established at the floor of a room. It is required to find out the RL of the underside of root (R) of the room using Spirit Levelling. The Back Sight (BS) to the BM has been observed as 1.500 m whereas the Fore Sight (FS) to R has been observed as 0.575

The observed magnetic bearing of a line OE was found to be 185 °. if was later discovred that station o had a local attraction of + 1.5 ° . The true bearing of the line OE , considering a magnitice declination of 3.5°E shall be

In General, the CORRECT sequence of Surveying operations is

The following table gives data of consecutive coordinates in respect of a closed

theodolite traverse PQRSP

The plan of a map was photocopied to a reduced size such that a line originally

100 mm, measures 90 mm. The original scale of the plan was 1:1000. The revised scale is

During a levelling work along a falling gradient using a Dumpy level and a Staf fof 3 m length, following successive readings were taken :1.785,2.935,0.360,1.320. What will be the correct order of booking these four readings in a level book ? (BS : Back Sight, IS : Intermediate Sight , FS : fore sight)

In the figure given below, the length PQ (WCB : 30°) and QR (WRB : 45°) RESPECTIVELY UP TO THREE PLACES OF DECIMAL ARE

Consider the following figure, which is an extract from a contour map (scale=1:20,000) of an area. An alignment of a road at a ruling gradient of 4% is to be road at a ruling gradient of 4% is to be fixed from thr point o and bryond . what should be the radius of the arc with o as should be the r

In quadrantal bearing system, bearing of a line varies from

A light house of 120 m height is just visible above the horizon from a ship. The correct distance (m) between the ship and the light house considering combined correction for curvature and refraction, is

A road is provided with a horizontal circular curve having deflection angle of 55° and centre line radius of 250 m. A transition curve is to be provided at each end of the circular curve of such a length that the rate of gain of radial acceleration

is 0.3 m/s³ at a speed of 50 km per hour. Length of the transition curve required at each of the ends is

The focal length of the object glass of a tacheometer is 200 mm, the distance between the vertical axis of the tacheometer and the optical centre of the object glass is 100 mm and the spacing between the upper and lower line of the diagram axis is 4 mm. With the line of collimation perfectly horizontal, the staff intercepts are 1 m (top), 2m (middle), and 3 m (bottom). The horizontal distance (m) between the staff and the instrument station is

The lengths and bearing of a closed traverse PQRSP are given below. The missing length and bearing, respectively of the line SP are

The plan of a survey plotted to a scale of 10 m to 1 cm is reduced in such a way that a line originally 10 cm long now measures 9 cm. The area of the reduced plan is measured as 81 cm² . the actual area (m²) of the survey is

The type of surveying in which the curvature of the earth is taken into account the curvature of the earth is taken into account is called

The magnetic bearing of a line AB is S 45° E and the declination is 5° West. The true bearing of the line AB

Two straight lines intersect at an angle of 60 The radius of a curve joining the two straight lines is 600 m. The length of long chord and mid-ordinate in metres of the curve are

The following measurements were made during testing a levelling instrument

p1 is close to P and Q1 is close to Q . if the reduced level of station P is 100.000 m , the reduced level of station Q is

The latitude and departure of a line AB are +78m and -45 m, respectively. The whole circle bearing of the line AB is :

Following bearings are observed while traversing with a compass

After applying the correction due to local attraction, the corrected fore bearing of line BC will be:

The vertical angles from P and Q The horizontal distance between two stations P and Q is 100 m. The vertical angles from P and Q to the top of a vertical tower at T are 3° and 5° above horizontal, respectively. The vertical angles from P and Q to the base of the tower are 0.1° and 0.5° below horizontal, respectively. Stations P, Q and the tower are in the same vertical plane with P and Q being on the same side of T. Neglecting earth's curvature and atmospheric refraction, the height (in m) of the tower is

Which of the following errors can be eliminated by reciprocal measurements in differential leveling?

I Error due to earth's curvature

II Error due to atmospheric refraction

The observations from a closed loop traverse around an obstacle are

What is the value of the missing measurement (rounded off to the nearest 10mm)?

Curvature correction to a staff reading in a differential leveling survey is

A bench mark has been established at the soffit of an ornamental arch at the known elevation of 100.0 m above mean sea level. The back sight used to establish A benchmark has been established at the soffit of an ornamental arch at the known elevation of 100.0 m above mean sea level. The back sight used to establish

The local mean time at a place located in longitude 90°40' E when the standard time is 6 hours and 30 minutes and the standard meridian is 82°30' E is

The magnetic bearing of a line AB was N 59°30' W in the year 1967 when the declination was 4°10'E. if the present declination is 3°W, the whole circle bearing of the line is

In a survey work, three independent angle, X, Y and Z were observed with weight W_{X ,} W_{Y ,} W_{Z respectively. The weight of the sum of angles X, Y and Z is given by:}

In a closed loop traverse of 1 km total length, the closing errors in departure and latitude are 0.3 m and 0.4m, respectively. The relative precision of this traverse will be:

Which of the following statements is FALSE

The chainage of the intersection point of two straights is 1585.60 m and the angle of intersection is 140° . If the radius of a circular curve is 600.00 m, the tangent distance (in m) and length of the curve (in m), respectively are

A tachometer was placed at point P to estimate the horizontal distances PQ and PR. The corresponding stadia intercepts with the telescope kept horizontal, are 0.320 m and 0.210 m, respectively. the ∠QPR is measured to be 61°30'30". if the stadia multiplication constant=100 and stadia addition constant = 0.10m , the horizontal distance (in m) between the points Q and R is ____

The survey carried out to delineate natural features,such as hills, rivers, forests and manmade features, such as towns, villages, buildings, roads, transmission lines and canals is classified as

Group I lists tool/instrument while Group II lists the method of surveying. Match the tool/instrument with the corresponding method of surveying

A levelling is carried out to establish the Reduced Levels (RL) of point R with respect to the Bench Mark (BM) at P. The staff readings taken are given below.

The Reduced Levels (RLs) of the points P and Q are +49.600 m and +51.870 m respectively. Distance PQ is 20 m. The distance (in m from P) at which the +51.000 m contour cuts the line PQ is

A theodolite is set up at station A and a 3 m long staff is held vertically at station B. The depression angle reading at 2.5 m marking on the staff is 6°10'. The horizontal distance between A and B is 2200 m. The height of the instrument at station A is 1.1 m and R.L. of A is 880.88 m. Apply the curvature and refraction correction, and determine the R.L. of B (in m). __________

Optimal flight planning for a photogrammetric survey should be carried out considering

The vertical angles subtended by the top of a tower T at two instrument stations set up at P and Q , are shown in the figure. The two stations are in line with the tower and spaced at a distance of 60m. Readings taken from these two stations on a leveling staff placed at the benchmark (BM = 450.000 m) are also shown in the figure. The reduced level of the top of the tower T (expressed in m) is _____

The staff reading taken on a workshop floor using a level is 0.645 m. The inverted staff reading taken to the bottom of a beam is 2.960 m. The reduced level of the floor is 40.500 m. The reduced level (expressed in m) of the bottom of the beam is

The system that uses the Sun as a source of electromagnetic energy and records the naturally radiated and reflected energy from the object is called

The minimum number of satellites needed for a GPS to determine its position precisely is

Two pegs A and B were fixed on opposite banks of a 50m wide river. The level was set up at A and the staff readings on Pegs A and B were observed as 1.350 m and 1.550 m, respectively. Thereafter the instrument was shifted and set up at B. The staff readings on Pegs B and A were observed as 0.750 m and 0.550 m, respectively. If the R.L. of Peg A is 100.200 m, the R.L. (in m) of Peg B is _____

The bearings of two inaccessible stations , S₁ (Easting 500 m, Northing 500 m) and S₂ (Easting 600 m, Northing450 m) from a station S₃ were observed as 225° and 153°26' respectively. The independent Easting (in m) of station S₃ is:

The combined correction due to curvature and refraction (in m) for distance of 1 km on the surface of Earth is

In a leveling work, sum of the Back Sight (B.S.) and Fore Sight (F.S.) have been found to be 3.085 m and 5.645 m respectively. If the Reduced Level (R.L.) of the starting station is 100.000 m, the R.L. (in m) of the last station is _______.

In a region with magnetic declination of 2°E , the magnetic Force Bearing (FB) of a line AB was measured as N79°50'E . There was local attraction at A. To determine the correct magnetic bearing to the line, a point O was selected at which there was no local attraction. The magnetic FB of line AO and OA were observed to be s52°40'E and N50°20W respectively .what is the true FB OF line AB?

An observer standing on the deck of a ship just sees the top of a lighthouse. The top of the lighthouse is 40 m above the sea level and the height of the observer's eye is 5 m above the sea level. The distance (in km, up to one decimal place) of the observer form the lighthouse is___

Two towers A and B, standing vertically on a horizontal ground, appear in a vertical aerial photograph as shown in the figure

The length of the image of the tower A on the photograph is1.5 cm and of the tower B is 2.0cm. The distance of the top the tower A (as shown by the arrowhead) is 4.0 cm and thedistance of the top of the tower B is 6.0 cm, as measured form the principal point p of thephotograph. If the height of the tower B is 80 m, the height (in meters) of the tower A is_____