Which of the following is not a principle source of error in levelling? Options: A . &nbspinstrumental error B . &nbspnatural error C . &nbsppersonal error D . &nbspSystematic error

Which of the following is not a principle source of error in levelling?

Question

Which of the following is not a principle source of error in levelling?

Options:

A . instrumental error

B . natural error

C . personal error

D . Systematic error

Answer: Option D
Answer: (d).Systematic error

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Question 1. Errors in sighting is _________....

Question 2. When distances are small which of the following error is negligible?....

Question 3. Wind vibrations are natural errors.....

Question 4. The degree of precision does not depend upon the type of instrument.....

Question 5. Due to refraction, staff reading decreases.....

Question 6. For a given instrument and atmospheric conditions, the precision depends upon the number of setups.....

Question 7. Rise and fall method provides check in calculations for all sights.....

Question 8. Which of the following represents a form of Bench Mark (B.M)?....

Question 9. If the R.L of a B.M is 100m and back sight is 1.225m, find the H.I at the station?....

Question 10. If the staff at the station point is not held vertically, the R.L at the observation would be ______________....

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