In the prismatic compass______________? A. the magnetic needle moves with the box B. the line of the sight does not move with the boxC. the magnetic needle and graduated circle do not move with the box D. the graduated circle…
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 handleC. is practically inextensible and is not liable to kinks when in use…
The maximum tolerance in a 20 m chain is_______________? A. ±2 mm B. ±3 mmC. ±5 mm D. ±8 mm
The length of a chain is measured from_______________? A. centre of one handle to centre of other handleB. outside of one handle to outside of other handle C. outside of one handle to inside of other handle D. inside of…
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′
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…
Which of the following is not used in measuring perpendicular offsets ? A. line ranger B. steel tape C. optical square D. cross staff
Cross staff is an instrument used for________________? A. measuring approximate horizontal anglesB. setting out right angles C. measuring bearings of the lines D. none of the above
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…
Normal tension is that pull which_______________? A. is used at the time of standardising the tapeB. neutralizes the effect due to pull and sag C. makes the correction due to sag equal to zero D. makes the correction due to…