Engineering Survey

21) ‘Offsets’ are

Discuss in Comment

short measurements from chain line

22) A building is an obstacle to

Discuss in Comment

both chaining and ranging

23) Normal tension is that pull which

Discuss in Comment

neutralizes the effect due to pull and sag

24) Which of the following is not used in measuring perpendicular offsets?

Discuss in Comment

line ranger

25) The angle of intersection of the two plane mirrors of an optical square

Discuss in Comment


26) The main difference between an optical square and a prism square is

Discuss in Comment

that no adjustment is required in a prism square since the angle between the reflecting surfaces cannot be changed

27) Which of the following angles can be set out with the help of French cross staff?

Discuss in Comment

either 45° or 90°

28) The allowable length of an offset depends upon the

Discuss in Comment

all of the above

29) Which of the following methods of offsets involves less measurement on the ground?

Discuss in Comment

method of perpendicular offsets

30) For accurate work, the steel band should always be used in preference to chain because the steel band

Discuss in Comment

is practically inextensible and is not liable to kinks when in use

Subject Notes

Objective Box


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