Surveying Quiz | Surveying Multiple Choice Questions and Answers

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Questions
1 Cross staff is an instrument used for
A measuring approximate horizontal angles
B setting out right angles
C measuring bearings of the lines
D none of the above

Answer: setting out right angles
2 The correction for sag is
A always additive
B always subtractive
C always zero
D sometimes additive and sometimes subtractive

Answer: always subtractive
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3 The permissible error in chaining for measurement with chain on rough or hilly ground is
A 1 in 100
B 1 in 250
C 1 in 500
D 1 in 1000

Answer: 1 in 250
4 Which of the following methods of offsets involves less measurement on the ground?
A method of perpendicular offsets
B method of oblique offsets
C method of ties
D all involve equal measurement on the ground

Answer: method of perpendicular offsets
5 Which of the following angles can be set out with the help of French cross staff?
A 45° only
B 90° only
C either 45° or 90°
D any angle

Answer: either 45° or 90°
6 The allowable length of an offset depends upon the
A degree of accuracy required
B method of setting out the perpendiculars and nature of ground
C scale of plotting
D all of the above

Answer: all of the above
7 The angle of intersection of the two plane mirrors of an optical square is
A 30°
B 45°
C 60°
D 90°

Answer: 45°
8 For a well-conditioned triangle, no angle should be less than
A 20°
B 30°
C 45°
D 60°

Answer: 30°
9 A metallic tape is made of
A steel
B invar
C linen
D cloth and wires

Answer: cloth and wires
10 During chaining along a straight line, the . leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is
A 4 chains
B 6 chains
C 120 m
D 180m

Answer: 6 chains
11 For a line AB
A the forebearing of AB and back bearing of AB differ by 180°
B the forebearing of AB and back bearing of BA differ by 180°
C both (a) and (b) are correct
D none is correct

Answer: the forebearing of AB and back bearing of AB differ by 180°
12 In the prismatic compass
A the magnetic needle moves with the box
B the line of the sight does not move with the box
C the magnetic needle and graduated circle do not move with the box
D the graduated circle is fixed to the box and the magnetic needle always remains in the N-S direction

Answer: the magnetic needle and graduated circle do not move with the box
13 If the true bearing of a line AB is 269° 30′, then the azimuth of the line AB is
A 0° 30′
B 89° 30′
C 90° 30′
D 269° 30′

Answer: 90° 30′
14 Select the incorrect statement.
A The true meridians at different places are parallel to each other.
B The true meridian at any place is not variable.
C The true meridians converge to a point in northern and southern hemispheres.
D The maps prepared by national survey departments of any country are based on true meridians.

Answer: The true meridians at different places are parallel to each other.
15 The length of a chain is measured from
A centre of one handle to centre of other handle
B outside of one handle to outside of other handle
C outside of one handle to inside of other handle
D inside of one handle to inside of other handle

Answer: outside of one handle to outside of other handle
16 For accurate work, the steel band should always be used in preference to chain because the steel band
A is lighter than chain
B is easier to handle
C is practically inextensible and is not liable to kinks when in use
D can be easily repaired in the field

Answer: is practically inextensible and is not liable to kinks when in use
17 The maximum tolerance in a 20 m chain is
A ±2 mm
B ±3 mm
C ±5 mm
D ±8 mm

Answer: ±5 mm
18 If the length of a chain is found to be short on testing, it can be adjusted by
A straightening the links
B removing one or more small circular rings
C closing the joints of the rings if opened out
D all of the above

Answer: straightening the links
19 Which of the following is not used in measuring perpendicular offsets ?
A line ranger
B steel tape
C optical square
D cross staff

Answer: line ranger
20 Normal tension is that pull which
A is used at the time of standardising the tape
B neutralizes the effect due to pull and sag
C makes the correction due to sag equal to zero
D makes the correction due to pull equal to zero

Answer: neutralizes the effect due to pull and sag

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