1. When 1 cm on a map represents 10 M on the ground , the representative fraction of the scale is ?

1/10

1/100

1/1000

1/10000

Answer: 1/1000

Explanation:


2. In measuring horizontal angles, the theodolite should be turned ?

clockwise from the forward station to the back station

clockwise from the back station to the forward station

anticlockwise from the forward station to the back station

anticlockwise from the forward station to the back station

Answer: clockwise from the back station to the forward station

Explanation:


3. When the centres of the arcs lie on the opposite sides of the common tangent at the junction the two curves, it is known as a ?

simple curve

vertical curve

compound curve

reverse curve

Answer: reverse curve

Explanation:


4. In the surveying telescope, diaphragm is held ?

inside the eye piece

inside the objective

nearer to the eye piece

nearer to the objective

Answer: nearer to the eye piece

Explanation:


5. When the cross-hairs are not clearly visible ?

the cross-hairs should be adjusted

the eye-piece should be focussed

the objective should be focussed

the parallex should be removed

Answer: the eye-piece should be focussed

Explanation:


6. The angle of field of the telescope ?

is independent of the size of the object glass

increases as the size of the eye piece increases

decreases as the distance between eye piece and object increases

all of the above

Answer: all of the above

Explanation:


7. The instrument, belonging to a class of reflecting instrument, is ?

line ranger

box sextent

prismatic compass

all of these

Answer: all of these

Explanation:


8. A base line in a chain survey ?

checks the accuracy of the framework

enables the surveyor to locate the interior details which are far away from the main chain lines

fixes up the directions of all other lines

all of the above

Answer: fixes up the directions of all other lines

Explanation:


9. The operation of turning the table so that all the lines on the paper are parallel to the corresponding lines on the ground, is called ?

levelling

centering

setting

orientation

Answer: orientation

Explanation:


10. In order to measure a horizontal angle more accurately than a vernier, a ?

method of repetition is used

method of reiteration is used

method of deflection angles is used

method of double observations is used

Answer: method of repetition is used

Explanation: