The correction for sag is_________________?

A. always additive
B. always subtractive
C. always zero
D. sometimes additive and sometimes subtractive

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

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

For a well-conditioned triangle, no angle should be less than______________?

A. 20°
B. 30°
C. 45°
D. 60°

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

The angle of intersection of the two plane mirrors of an optical square is______________?

A. 30°
B. 45°
C. 60°
D. 90°

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

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

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

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