Question67:-The survey in which the curvature of earth is ignored is called
A:-Plane survey
B:-geodetic survey
C:-geological survey
D:-aerial survey
Correct Answer:- Option-A
Question68:-As per Indian Standard ,the length of one link in 30m chain should be
A:-0.20m
.30m
C:-0.40m
D:-0.15m
Correct Answer:- Option-A
Question69:-The error in measured length due to sag of chain or tape is known as
A:-positive error
B:-negative error
C:-compensating error
D:-instrumental error
Correct Answer:- Option-A
Question70:-The base line is measured with
A:-metallic tape
B:-steel tape
C:-Invar tape
D:-Chain
Correct Answer:- Option-D
Question7 1:-If the fore bearing of a line AB is observed to be 12°24’ ,the back bearing of line AB should be
A:-77°36'
8:-97536'
6.66“
0.4“
Correct Answer:- Option-D
Question72:-At magnetic poles,the dip of magnetic needle is
A:-0 degree
B:-45 degree
C:-90 degree
D:-120 degree
Correct Answer:- Option-C
Question73:-In levelling the error due to refraction is
A:-additive
B:-subtractive
C:-compensating
D:-progressive
Correct Answer:- Option-C
Question74:-Closed contours with higher values inside represents
A:-depression
B:-Hill
C:-Plane surface
D:-pond
Correct Answer:- Option-B
Question75:-When the bubble of the level tube of a level is central
A:-line of sight is horizontal
ine of collimation is horizontal
:-axis of the telescope is horizontal
D:-Geometrical axis of the telescope is horizontal
Correct Answer:- Option-A
Question76:-The process of turning the telescope about the vertical axis in a horizontal plane is known as
A:-Reversing
B:-transiting
C:-plunging
D:-swinging