In which of the following phase of temporary adjustments for different levels, different steps for adjustments are same for dumpy and wye level but differ for tilting level?

Question

Question

This question was previously asked in

BHEL Supervisor Trainee Civil 21 Jan 2024 Official Paper

Answer 1

Explanation:

Leveling up is the process of making the instrument’s bubble level central using the foot screws.
For dumpy levels and wye levels, the leveling procedure is fixed and done using foot screws.
However, for a tilting level, the instrument has an additional tilting screw, which allows for finer adjustments in leveling without using foot screws in the same manner.
The tilting level can be slightly adjusted using its tilting screw after approximate leveling with foot screws, which makes the method different from dumpy and wye levels.

Analysis of Other Options:

Focusing the eyepiece and objective lens
- This step remains the same for all levels, including dumpy, wye, and tilting levels.
Setting up
- This involves placing the instrument on a tripod and roughly leveling it, which is identical for all three types of levels.
Elimination of parallax
- This is done by adjusting the eyepiece and focusing the objective lens, and it remains the same for all types of levels.

Thus, the correct answer is Leveling up, as the procedure differs for tilting levels but remains the same for dumpy and wye levels.