Q. Due to refraction, staff reading decreases.

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

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

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Q. The precision on plains will be less than that on hills.

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Q. The degree of precision depends upon the skill of an observer.

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Q. What is the error in feet for rough levelling for reconnaissance or preliminary surveys?

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Q. What is the error in feet for ordinary levelling for location and construction surveys?

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Q. What is the error in feet for accurate levelling for principal benchmarks or for extensive surveys?

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Q. What is the error in feet for precise levelling for benchmarks of widely distributed points?

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Q. What is the error in mm for rough levelling for reconnaissance or preliminary surveys?

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Q. What is the error in mm for ordinary levelling for location and construction surveys?

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Q. What is the error in mm for accurate levelling for principal benchmarks or for extensive surveys?

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Q. What is the error in mm for precise levelling for benchmarks of widely distributed points?

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Q. Which type of levelling is done on the phenomenon, the difference in elevation between two points is proportional to the difference in atmospheric pressure at these points?

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Q. Height of the Instrument method is a less tedious and simple process.

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Q. While doing construction work, which among the following is more suitable?

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Q. The formula for calculating R.L can be given as _________

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Q. Which of the following indicates the formula for arithmetic check?

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

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

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