Theodolites Compass And Traverse Surveying Practice Questions

To finalize the direction of a survey, four surveyors set up a theodolite at a station $\mathrm{P}$ and performed all the temporary adjustments. From the station P, each of the surveyors observed the bearing to a tower located at station $\mathrm{Q}$ with the same instrument without shifting it. The bearing observed by the surveyors are $30^{\circ} 30^{\prime} 00^{\prime \prime}, 30^{\circ} 29^{\prime} 40^{\prime \prime}, 30^{\circ} 30^{\prime} 20^{\prime \prime}$ and $30^{\circ} 31^{\prime} 20^{\prime \prime}$ . Assuming that each measurement is taken with equal precision, the most probable value of the bearing is

If the number of sides resulting in a closed traverse is increased from three to four, the sum of the interior angles increases by

Among the following statements relating the fundamental lines of a transit theodolite, which one is CORRECT

A surveyor observes a zenith angle of $93^{\circ} 00^{\prime} 00^{\prime \prime}$ during a theodolite survey The corresponding vertical angle is

A child walks on a level surface from point $P$ to point $\mathrm{Q}$ at a bearing of $30^{\circ}$ , from point $\mathrm{Q}$ to point $R$ at a bearing of $90^{\circ}$ and then directly returns to the starting point $P$ at a bearing of $240^{\circ}$ . The straightline paths $P Q$ and $Q R$ are $4 m$ each. Assuming that all bearings are measured from the magnetic north in degrees, the straight-line path length RP (in meters) is ____(rounded off to the nearest integer)

The direct and reversed zenith angles observed by a theodolite are $56^{\circ} 00^{\prime} 00^{\prime \prime}$ and $303^{\circ} 00^{\prime} 00^{\prime \prime}$ , respectively. What is the vertical collimation correction?

A delivery agent is at a location R. To deliver the order, she is instructed to travel to location $P$ along straight-line paths of $\mathrm{RC}, \mathrm{CA}, \mathrm{AB}$ and $\mathrm{BP}$ of $5 \mathrm{~km}$ each. The direction of each path is given in the table below as whole circle bearings. Assume that the latitude (L) and departure (D) of $R$ is $(0,0) \mathrm{km}$ . What is the latitude and departure of $P$ (in km, rounded off to one decimal place)?

The bearing of a survey line is $N31^{\circ}17'W$ . Its azimuth observed from north is ______ deg. (round off to two decimal places)

If the magnetic bearing of the Sun at a place at noon is $S2^{\circ}E$ , the magnetic declination (in degrees) at that place is

Traversing is carried out for a closed traverse PQRS. The internal angles at vertices P, Q, R and S are measured as $92^{\circ}$ , $68^{\circ}$ , $123^{\circ}$ and $77^{\circ}$ , respectively. If fore bearing of line PQ is $27^{\circ}$ , fore bearing of line RS (in degrees, in integer) is _________

For a given traverse, latitudes and departures are calculated and it is found that sum of latitudes is equal to +2.1 m and the sum of departures is equal to -2.8 m. The length and bearing of the closing error, respectively, are

A horizontal angle $\theta$ is measured by four different surveyors multiple times and the values reported are given below.

he most probable value of the angle $\theta$ ( in degree, round off to two decimal placesis ________

The length and bearings of a traverse PQRS are: The length of line segment SP (in m, round off to two decimal places), is ________.

An open traverse PQRST is surveyed using theodolite and the consecutive coordinates obtained are given in the table If the independent coordinates (Northing, Easting) of station P are (400 m, 200 m) the independent coordinates (in m) of station T, are

A theodolite was set up at a station P. The angle of depression to a vane 2 m above the foot of a staff held at another station Q was $45^{\circ}$ . The horizontal distance between stations P and Q is 20 m. The staff reading at a benchmark S of RL 433.050 m is 2.905 m. Neglecting the errors due to curvature and refraction, the RL of the station Q (in m), is

A theodolite is set up at station A. The RL of instrument axis is 212.250 m. The angle of elevation to the top of a 4 m long staff, held vertical at station B, is $7^{\circ}$ . The horizontal distance between station A and B is 400 m. Neglecting the errors due to curvature of earth and refraction, the RL (in m, round off to three decimal places) of station B is __________

The interior angles of four triangles are given below: Which of the triangles are ill-conditioned and should be avoided in Triangulation surveys?

A staff is placed on a benchmark (BM) of reduced level (RL) 100.000 m and a theodolite is placed at a horizontal distance of 50 m from the BM to measure the vertical angles. The measured vertical angles from the horizontal at the staff readings of 0.400 m and 2.400 m are found to be the same. Taking the height of the instrument as 1.400m, the RL (in m) of the theodolite station is _____

The data from a closed traverse survey PQRS (run in the clockwise direction) are given in the table The closing error for the traverse PQRS (in degrees) is ___