| Which of the following is/are type(s) of telescope used in stadia surveying? i. simple external focusing telescope ii. external focusing anallactic telescope iii. internal focusing telescope |
A) Only (i)
B) (i) and (ii)
C) (ii) and (iii)
D) (i), (ii) and (iii)
| Stadia tacheometry is based on the principle that |
A) Trigonometrical formulae can be used to calculate distances from the vertical angles
B) Intercepts on measuring rods are proportional to the distances
C) Horizontal distances vary linearly as vertical angles
D) Knowing the sides and two angles of a triangle, another side can be calculated
| Triangulation is based on the principle that knowing |
A) three sides, the angles can be calculated precisely
B) three angles, the sides can be calculated precisely
C) two sides and one angle, the remaining side and angles can be determined precisely
D) one side and three angles, the remaining sides can be calculated precisely
| Which of the following corrections is relevant with regards to trigonometric levelling? |
A) Correction for dip
B) Correction for axis signal
C) Correction for curvature
D) Correction for parallax
| The tacheometric method of surveying is generally preferred for |
A) providing primary control
B) large scale survey
C) fixing points with highest precision
D) difficult terrain
| Subtense method of tacheometric measurement is similar to _____ |
A) fixed hair method except that the stadia interval is variable
B) fixed hair method except that the stadia interval is fixed
C) tangential method except that the additive constant is 0
D) tangential method except that the multiplying constant is 100
| Consider the following statements: 1. Triangulation is another system of increasing the ground control points 2. Triangulation is used for filling in the minute details of an area 3. Triangulation system of quadrilaterals is most suitable for railways. Which of the above statements is correct? |
A) 1 only
B) 2 only
C) 3 only
D) 3 and 1 only
| Which of the following statement(s) is/are true for an anallatic lens (i) it is a lens placed between the object glass and the eye-piece at a fixed distance from the formed (ii) After placing an anallatic lens, the value of the additive constant is reduced to 0 (iii) After placing an anallatic lens, the value of the multiplying constant becomes 100 |
A) Only (i)
B) (i) and (ii)
C) (ii) and (iii)
D) (i), (ii) and (iii)
| In trigonometric levelling, the correction for refraction is |
A) always subtractive
B) always additive
C) subtractive for angle of depression
D) additive for angle of depression
| Subtense bar is an instrument used for |
A) measuring horizontal distances in undulated area
B) measuring horizontal distances in plane area
C) measuring horizontal angles in undulated area
D) measuring horizontal angles in plane area
