Civil Bhai

Question No. 21
Detailed plotting is generally done by
(A) Radiation
(B) Traversing
(C) Resection
(D) All of the above
Answer: Option A

Question No. 22
If the smallest division of a vernier is longer than the smallest division of its primary scale, the
vernier is known as
(A) Direct vernier
(B) Double vernier
(C) Retrograde vernier
(D) Simple vernier
Answer: Option C

Question No. 23
Themethod of reversal
(A) Is usually directed to examine whether a certain part is truly parallel or perpendicular to
another
(B) Makes the erroneous relationship between parts evident
(C) Both (a) and (b)
(D) Neither (a) nor (b)
Answer: Option C

Question No. 24
The line normal to the plumb line is known as
(A) Horizontal line
(B) Level line
(C) Datum line
(D) Vertical line
Answer: Option B

Question No. 25
In levelling operation
(A) When the instrument is being shifted, the staff must not be moved
(B) When the staff is being carried forward, the instrument must remain stationary
(C) Both (a) and (b)
(D) Neither (a) nor (b)
Answer: Option C

Question No. 26
The two point problem and three point problem are methods of
(A) Resection
(B) Orientation
(C) Traversing
(D) Resection and orientation
Answer: Option D

Question No. 27
Ramsden eye-piece consists of
(A) Two convex lenses short distance apart
(B) Two concave lenses short distance apart
(C) One convex lens and one concave lens short distance apart
(D) Two Plano-convex lenses short distance apart, with the convex surfaces facing each other
Answer: Option D

Question No. 28
The line of sight is kept as high above ground surface as possible to minimise the error in the
observed angles due to
(A) Shimmering
(B) Horizontal refraction
(C) Vertical refraction
(D) Both shimmering and horizontal refraction
Answer: Option D

Question No. 30
The desired sensitivity of a bubble tube with 2 mm divisions is 30". The radius of the bubble tube
should be
(A) 13.75 m
(B) 3.44 m
(C) 1375 m
(D) None of these
Answer: Option A