Mine Surveying - Study Mode
[#41] It is the imaginary line tangential to the longitudinal curve of the tube at the middle point called . . . . . . . .
Correct Answer
(A) Axis of buble tube
[#42] The upper plate of theodolite provided with two verniers placed . . . . . . . . a part and marked A and B.
Correct Answer
(B) 180°
[#43] To measure the length precisly with an invar tape the limits of error is . . . . . . . .
Correct Answer
(C) 1 in 10,000
[#44] The error due to variation in temperature is . . . . . . . .
Correct Answer
(A) Either positive or Negative
[#45] When the instrument is correctly levelled then height of plane of collimation is synorymous with . . . . . . . .
Correct Answer
(B) Height of instrument