Surveying Online Test - Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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Certificate: No
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1 / 30

1. The scale used to measure and to set out the angles is

a) diagonal scale

b) comparative scale

c) vernier scale

d) scale of chords

2 / 30

2. Area of triangle joining three corner points in comparison to the circle same three points:

a) always greater

b) always less

c) always equal

d) none of the above

3 / 30

3. When a chain line encounters a river:

a) chaining is obstructed, but ranging is free

b) ranging is obstructed, chaining is free

c) both ranging and chaining are obstructed

d) both ranging and chaining are free

4 / 30

4. In a closed traverse, the closing error should not be more than (where N is the no. of sides of the traverse)

a) N x least count of the instrument

b) √N x least count of the instrument

c) 1/N x least count of the instrument

d) 1/√N x least count of the instrument

5 / 30

5. In compass surveying

a) the direction and lengths of the survey line are measured by compass

b) the direction is measured by the compass

c) length is measured by the chain or tape

d) both (b) and (c) of above

6 / 30

6. A chain is made up of mild steel or galvanized iron wire of diameter

a) 1 mm

b) 3 mm

c) 5 mm

d) 7 mm

7 / 30

7. Find the contour interval for the map, 1: 25000 in IS & FPS

a) 4m & 20.70ft

b) 6m & 19.70ft

c) 3m & 20.70ft

d) 5m & 19.70ft

8 / 30

8. Distomats is a type of

a) direct distance measuring instrument

b) optical distance measuring instrument

c) electromagnetic distance measuring instrument

d) none of the above

9 / 30

9. The most probable value of an observed quantity available from a given set of observations is the one for which the sum of the square of errors is a minimum. This statement is called

a) the principle of least square

b) the law of errors

c) the principle of square errors

d) none of the above

10 / 30

10. If W is the weight of the chain, L is the span, and P is the tension or pull, the sag correction for the chain will be

a) W^2L^2/24P^2

b) W^2L/24P

c) LW^2/24P^2

d) W^2L^2/24P

11 / 30

11. Choose the correct statement:

a) discrepancy in the difference between two measured values of the same quantity

b) residual error is the difference between a measured quantity and the most probable value

c) variance is the square of the standard deviation

d) all of the above

12 / 30

12. *The correction for refraction is given by

a) 0.0785d^2m

b) 0.0112 d^2m

c) 0.0673 d^2m

d) none of the above

13 / 30

13. The types of survey in which fieldwork and plotting proceed simultaneously are:

a) plane table

b) compass

c) leveling

d) tacheometric

14 / 30

14. A 30 m long chain when tested should not show errors exceeding

a) ±2mm per metre and ±5mm overall length

b) ±3mm per metre and ±8mm overall length

c) ±2mm per metre and ±8mm overall length

d) ±5mm per metre and ±2mm overall length

15 / 30

15. If the sum of northing of a traverse exceeds the sum of southing by 2m and the sum of easting exceeds the sum of westing by 2m, the resulting closing error will be

a) √2 m

b) 2√2 m

c) 2m

d) 4m

16 / 30

16. The accuracy of measurement in chain surveying does not depend upon

a) the length of the offset

b) the scale of the plotting

c) the importance of the features

d) the general layout of the chain lines

17 / 30

17. The orientation of the table is done by

a) magnetic needle

b) back sighting

c) both (a) and (b) of above

d) none of the above

18 / 30

18. A benchmark (BM) is a

a) point of known elevation

b) reference point

c) the first station

d) the last station

19 / 30

19. Isogonic lines are

a) line passing through the points having the same declination at a given point

b) line passing through the point of zero declination

c) line passing through the point having the same dip

d) line passing through the point having zero dip

20 / 30

20. The method of tacheometry in which the observation is made with stadia wires with a variable interval is known as

a) movable hair method

b) fixed hair method

c) tangential hair method

d) substense hair method

21 / 30

21. For a line AB

a) the forebearing and back bearing of line AB differ by 180°

b) the forebearing of AB and the back bearing of line BA differ by 180°

c) both (a) and (b) of the above

d) none of the above

22 / 30

22. Azimuth (direct angles) is an angle measured in

a) c.w. direction

b) a.c.w. direction

c) both

d) none of the above

23 / 30

23. To orient a plane table without two inaccessible points, the method generally adopted is:

a) intersection

b) resection

c) radiation

d) two-point problem

24 / 30

24. Which one of the following may not be classified as personal error

a) inaccurate centring

b) inaccurate levelling

c) plane of sight not being vertical

d) carelessness in reading and recording

25 / 30

25. The angular error of closure or summation error should not exceed (Where N is the number of stations or sides.)

a) 15√N

b) 153√N

c) √N

d) 3√N

26 / 30

26. The order of accuracy of the elevation of points obtained from a contour map is equal to

a) contour interval

b) 1/2 x control interval

c) 1/4 x contour interval

d) none of the above

27 / 30

27. For any point on the surface with a given inclination, the contour gradient possible is

a) one

b) two

c) infinite

d) none of the above

28 / 30

28. The place where the reading is taken is known as

a) level

b) fixed point

c) station

d) none of the above

29 / 30

29. The image of the objectives formed should lie

a) at the eyepiece

b) in the plane of cross hairs

c) at the center of the eyepiece

d) at the optical center of the eyepiece.

30 / 30

30. Direct distance measurement method is more suitable to measure in

a) hilly area

b) plain area

c) line of sight

d) none of the above

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Surveying Online Test – Paper 2

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