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Objective Question & Answer

QUESTION

Objective Question

Q.1

Which of the following are fundamental lines of a theodolite? 

1. Vertical and horizontal axis

2. The diagonally opposite screw lines

3. The line of collimation and axis of the plate levels

4. The bubble line of altitude level

Select the correct answer using following codes: 

A
1, 2 & 3 
B
1, 2 & 4 
C
2 & 3 
D
1, 3 & 4 
Answer ( Option D)

1, 3 & 4 

Solution

Five fundamental lines (axis) of a theodolite

(i) Vertical axis  (ii) Horizontal axis  (iii) Line of collimation  (iv) Altitude level axis  (v) Plate level axis 

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