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While measuring horizontal angles by the method of repetition with a theodolite, readings are taken on both the verniers. Which one of the following errors will be eliminated by reading both the verniers?
- a)Error due to eccentricity of the centres
- b)Error due to imperfect adjustment of the line of collimation
- c)Effort due to imperfect adjustment of the horizontal axis
- d)Error due to imperfect graduations
Correct answer is option 'A'. Can you explain this answer?
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While measuring horizontal angles by the method of repetition with a t...
Elimination of Error due to Eccentricity of the Centres
The method of repetition is commonly used for measuring horizontal angles with a theodolite. This method involves taking readings on both the verniers of the instrument to eliminate errors.
One of the errors that can occur when measuring angles with a theodolite is due to eccentricity of the centres. This means that the centres of the upper and lower plates are not perfectly aligned, resulting in a slight displacement of the line of sight. This can cause errors in the measured angle.
By taking readings on both the verniers, the error due to eccentricity of the centres can be eliminated. This is because the readings on the two verniers are taken from opposite sides of the instrument, and any error due to eccentricity of the centres will be cancelled out.
Other Errors that can occur while measuring Horizontal Angles
There are other errors that can occur when measuring horizontal angles with a theodolite, including:
1. Error due to imperfect adjustment of the line of collimation: This error can occur when the line of sight is not perfectly aligned with the centre of the instrument. This can be caused by misalignment of the telescope or by errors in the leveling of the instrument.
2. Error due to imperfect adjustment of the horizontal axis: This error can occur when the horizontal axis of the instrument is not perfectly level. This can be caused by errors in the leveling of the instrument or by deformations in the instrument due to temperature changes.
3. Error due to imperfect graduations: This error can occur when the graduations on the verniers are not perfectly aligned with the axis of rotation of the instrument. This can be caused by manufacturing defects or by wear and tear on the instrument.
Conclusion
In conclusion, the method of repetition with a theodolite is an effective way to eliminate errors due to eccentricity of the centres when measuring horizontal angles. However, it is important to be aware of other sources of error and to take steps to minimize them, such as ensuring that the instrument is properly leveled and calibrated.
The method of repetition is commonly used for measuring horizontal angles with a theodolite. This method involves taking readings on both the verniers of the instrument to eliminate errors.
One of the errors that can occur when measuring angles with a theodolite is due to eccentricity of the centres. This means that the centres of the upper and lower plates are not perfectly aligned, resulting in a slight displacement of the line of sight. This can cause errors in the measured angle.
By taking readings on both the verniers, the error due to eccentricity of the centres can be eliminated. This is because the readings on the two verniers are taken from opposite sides of the instrument, and any error due to eccentricity of the centres will be cancelled out.
Other Errors that can occur while measuring Horizontal Angles
There are other errors that can occur when measuring horizontal angles with a theodolite, including:
1. Error due to imperfect adjustment of the line of collimation: This error can occur when the line of sight is not perfectly aligned with the centre of the instrument. This can be caused by misalignment of the telescope or by errors in the leveling of the instrument.
2. Error due to imperfect adjustment of the horizontal axis: This error can occur when the horizontal axis of the instrument is not perfectly level. This can be caused by errors in the leveling of the instrument or by deformations in the instrument due to temperature changes.
3. Error due to imperfect graduations: This error can occur when the graduations on the verniers are not perfectly aligned with the axis of rotation of the instrument. This can be caused by manufacturing defects or by wear and tear on the instrument.
Conclusion
In conclusion, the method of repetition with a theodolite is an effective way to eliminate errors due to eccentricity of the centres when measuring horizontal angles. However, it is important to be aware of other sources of error and to take steps to minimize them, such as ensuring that the instrument is properly leveled and calibrated.
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While measuring horizontal angles by the method of repetition with a theodolite, readings are taken on both the verniers. Which one of the following errors will be eliminated by reading both the verniers?a)Error due to eccentricity of the centresb)Error due to imperfect adjustment of the line of collimationc)Effort due to imperfect adjustment of the horizontal axisd)Error due to imperfect graduationsCorrect answer is option 'A'. Can you explain this answer?
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While measuring horizontal angles by the method of repetition with a theodolite, readings are taken on both the verniers. Which one of the following errors will be eliminated by reading both the verniers?a)Error due to eccentricity of the centresb)Error due to imperfect adjustment of the line of collimationc)Effort due to imperfect adjustment of the horizontal axisd)Error due to imperfect graduationsCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about While measuring horizontal angles by the method of repetition with a theodolite, readings are taken on both the verniers. Which one of the following errors will be eliminated by reading both the verniers?a)Error due to eccentricity of the centresb)Error due to imperfect adjustment of the line of collimationc)Effort due to imperfect adjustment of the horizontal axisd)Error due to imperfect graduationsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for While measuring horizontal angles by the method of repetition with a theodolite, readings are taken on both the verniers. Which one of the following errors will be eliminated by reading both the verniers?a)Error due to eccentricity of the centresb)Error due to imperfect adjustment of the line of collimationc)Effort due to imperfect adjustment of the horizontal axisd)Error due to imperfect graduationsCorrect answer is option 'A'. Can you explain this answer?.
While measuring horizontal angles by the method of repetition with a theodolite, readings are taken on both the verniers. Which one of the following errors will be eliminated by reading both the verniers?a)Error due to eccentricity of the centresb)Error due to imperfect adjustment of the line of collimationc)Effort due to imperfect adjustment of the horizontal axisd)Error due to imperfect graduationsCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about While measuring horizontal angles by the method of repetition with a theodolite, readings are taken on both the verniers. Which one of the following errors will be eliminated by reading both the verniers?a)Error due to eccentricity of the centresb)Error due to imperfect adjustment of the line of collimationc)Effort due to imperfect adjustment of the horizontal axisd)Error due to imperfect graduationsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for While measuring horizontal angles by the method of repetition with a theodolite, readings are taken on both the verniers. Which one of the following errors will be eliminated by reading both the verniers?a)Error due to eccentricity of the centresb)Error due to imperfect adjustment of the line of collimationc)Effort due to imperfect adjustment of the horizontal axisd)Error due to imperfect graduationsCorrect answer is option 'A'. Can you explain this answer?.
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