Important Surveying Mcq's For JE/AE

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 1.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


2.The correction for sag is


A. always additive


B. always subtractive


C. always zero


D. sometimes additive and sometimes subtractive


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



4.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



5.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


6.Which of the following is not used in measuring perpendicular offsets ?


A. line ranger


B. steel tape


C. optical square


D. cross staff



7. The maximum tolerance in a 20 m chain is


A. ±2 mm


B. ±3 mm


C. ±5 mm


D. ±8 mm



8. Local attraction in compass surveying may exist due to


A. incorrect levelling of the magnetic needle


B. loss of magnetism of the needle


C. friction of the needle at the pivot


D. presence of magnetic substances near the instrument




9.The horizontal angle between the true meridian and magnetic meridian at a place is called


A. azimuth


B. declination


C. local attraction


D. magnetic bearing



10.Agate cap is fitted with a


A. cross staff


B. level


C. chain


D. prismatic compass



       Answers

1.C                 6.A

2.B                 7.C

3.B.                8.D

4.D                 9.B

5.B                 10.D          












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