1. The angle between the back tangent and forward tangent of a curve is known as ?

deflection angle

central angle

angle of intersection

none of these

Answer: angle of intersection

Explanation:


2. The error in measured length due to sag of chain or tape is known as ?

positive error

negative error

compensating error

instrumental error

Answer: positive error

Explanation:


3. A line joining the apex of a triangle to some fixed point on the opposite side is called a ?

check line

tie line

base line

none of these

Answer: check line

Explanation:


4. The length of peg interval for flat curves is ?

15 m

20 m

25 m

30 m

Answer: 30 m

Explanation:


5. Chain surveying is most suitable when ?

area to be surveyed is small

ground is fairly level and open with simple details

plans are required on a large scale

all of the above

Answer: all of the above

Explanation:


6. The instrument used for setting out an offset at a right angle, is called ?

open cross-staff

french cross-staff

optical square

adjustable cross-staff

Answer: open cross-staff

Explanation:


7. The optical square is used to measure angles by ?

reflection

reflection

double refraction

double reflection

Answer: reflection

Explanation:


8. The line in which the plane passing through the given point and the north and south poles south pole 0 intersects the surface of the earth, is called ?

arbitrary meridian

magnetic meridian

true meridian

none of these

Answer: true meridian

Explanation:


9. The instrument attached to the wheel of a vehicle in order to measure the distance travelled, is called ?

passometer

pedometer

odometer

speedometer

Answer: odometer

Explanation:


10. The horizontal angle between the true meridian and a survey line is called ?

magnetic bearing

azimuth

dip

magnetic decline

Answer: azimuth

Explanation: