1. A method of differential levelling is used in order to find the difference in elevation between two points when ?

they are too far apart

there are obstacles between them

the difference in elevation between them is too great

all of the above

Answer: all of the above

Explanation:


2. The plotting of small areas which can be commanded from a single station is usually done on the plane table by the method of ?

radiation

intersection

traversing

resection

Answer: radiation

Explanation:


3. In any closed traverse, if the survey work is correct, then ?

the algebraic sum of latitudes should be equal to zero

the algebraic sum of departures should be equal to zero

the sum of northings should be equal to the sum of southings

all of the above

Answer: all of the above

Explanation:


4. The brightness of the image ........... the magnifying power ?

is directly proportional to

is inversely proportional to

varies directly as the square of

varies inversely as the square of

Answer: varies inversely as the square of

Explanation:


5. An imaginary line tangential to the longitudinal curve of the level at the centre of the axis called ?

horizontal axis

vertical axis

axis of the level tube

line of collimation

Answer: axis of the level tube

Explanation:


6. The traversing by the method of deflection angles is chiefly used in ?

canals

highways

railways

all of these

Answer: all of these

Explanation:


7. The multiplying constant for the tachometer is, generally, kept as ?

20

40

60

100

Answer: 100

Explanation:


8. The curvature of the earth is taken into consideration if the limit of survey is ?

50 to 100 km²

100 to 200 km²

200 to 250 km²

more than 250 km²

Answer: more than 250 km²

Explanation:


9. When the whole circle bearing of a traverse line is between ?

the latitude is positive and departure is negative

the departure is positive and latitude is negative

both the latitude and departure are positive

both the latitude and departure are negative

Answer: the departure is positive and latitude is negative

Explanation:


10. The method of surveying in which field work and plotting work are done simultaneously, is called ?

compass surveying

levelling

plane tabling

chain surveying

Answer: plane tabling

Explanation: