Civil Bhai

Question No. 31
Subtense bar is an instrument used for
(A) Levelling
(B) Measurement of horizontal distances in plane areas
(C) Measurement of horizontal distances in undulated areas
(D) Measurement of angles
Answer: Option C

Question No. 32
Volume of the earth workmay be calculated by
(A) Mean areas
(B) End areas
(C) Trapezoidal
(D) All the above
Answer: Option D

Question No. 34
Pick up the correct statement fromthe following:
(A) The directions of plumb lines suspended at different points in a survey are not strictly
parallel
(B) In surveys of small extent, the effect of curvature may be ignored and the level surface of
the earth is assumed as horizontal
(C) In surveys of large extent, the effect of curvature of the earth must be considered
(D) All the above
Answer: Option D

Question No. 35
In levelling operation
(A) If second reading is more than first, it represents a rise
(B) If first reading is more than second, it represents a rise
(C) If first reading is less than second, it represents a fall
(D) Both (b) and (c)
Answer: Option D

Question No. 36
Over-turning of vehicles on a curve can be avoided by using
(A) Compound curve
(B) Vertical curve
(C) Reverse curve
(D) Transition curve
Answer: Option D

Question No. 37
Which of the following introduces an error of about 1 in 1000 if 20mchain is used?
(A) Length of chain 20 mm wrong
(B) One end of the chain 0.9 m off the line
(C) One end of chain 0.9 m higher than the other
(D) All the above
Answer: Option D

Question No. 38
Chain surveying is well adopted for
(A) Small areas in open ground
(B) Small areas with crowded details
(C) Large areas with simple details
(D) Large areas with difficult details
Answer: Option A

Question No. 39
Two contour lines, having the same elevation
(A) Cannot cross each other
(B) Can cross each other
(C) Cannot unite together
(D) Can unite together
Answer: Option D