Surveying Quiz practies questions test1

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1. 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 _____.
4 chains	6 chains
120 m	180m

2. A metallic tape is made of _____.
steel	invar
linen	cloth and wires

3. For a well-conditioned triangle, no angle should be less than
20°	30°
45°	60°

4. The angle of intersection of the two plane mirrors of an optical square is _____.
30°	45°
60°	90°

5. The allowable length of an offset depends upon the _______.
degree of accuracy required	method of setting out the perpendiculars and nature of ground
scale of plotting	all of the above

6. Which of the following angles can be set out with the help of French cross staff?
45° only	90° only
either 45°or90°	any angle

7. Which of the following methods of offsets involves less measurement on the ground?
method of perpendicular offsets	method of oblique offsets
method of ties	all involve equal measurement on the ground

8. The permissible error in chaining for measurement with chain on rough or hilly ground is ______.
1 in 100	1 in 250
1 in 500	1 in 1000

9. The correction for sag is ______.
always additive	always subtractive
always zero	sometimes additive and sometimes subtractive

10. Cross staff is an instrument used for _____.
measuring approximate horizontal angles	setting out right angles
measuring bearings of the lines	none of the above

11. Normal tension is that pull which _____.
is used at the time of standardising the tape	neutralizes the effect due to pull and sag
neutralizes the effect due to pull and sag	makes the correction due to pull equal to zero

12. Which of the following is not used in measuring perpendicular offsets ?
line ranger	steel tape
optical square	cross staff

13. If the length of a chain is found to be short on testing, it can be adjusted by ______.
straightening the links	removing one or more small circular rings
closing the joints of the rings if opened out	all of the above

14. The maximum tolerance in a 20 m chain is ______.
±2 mm	±3 mm
±5 mm	±8 mm

15. For accurate work, the steel band should always be used in preference to chain because the steel band
is lighter than chain	is easier to handle
is practically inextensible and is not liable to kinks when in use	can be easily repaired in the field

16. The length of a chain is measured from
centre of one handle to centre of other handle	outside of one handle to outside of other handle
outside of one handle to inside of other handle	inside of one handle to inside of other handle

17. Select the incorrect statement.
The true meridians at different places are parallel to each other.	The true meridian at any place is not variable.
The true meridians converge to a point in northern and southern hemispheres.	The maps prepared by national survey departments of any country are based on true meridians.

18. If the true bearing of a line AB is 269° 30', then the azimuth of the line AB is
0° 30'	89° 30'
90° 30'	269° 30'

19. In the prismatic compass
the magnetic needle moves with the box	the line of the sight does not move with the box
the magnetic needle and graduated circle do not move with the box	the graduated circle is fixed to the box and the magnetic needle always remains in the N-S direction

20. Local attraction in compass surveying may exist due to
incorrect levelling of the magnetic needle	loss of magnetism of the needle
friction of the needle at the pivot	presence of magnetic substances near the instrument