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Question
Among the following factors that can cause an error during distance measurement in chaining, the compensating error is caused by .............
A.
variation in temperature
B.
sag in chain
C.
careless holding and marking
D.
bad ranging
Answer ( Option C)

careless holding and marking

Solution

Compensating Errors:
• These are errors that can either increase or decrease the measured distance. Over a series of measurements, these errors may cancel each other out, leading to a negligible effect on the overall measurement. 
• Careless Holding and Marking can cause the measurement to be either slightly longer or shorter, depending on the manner in which the chain is held or marked. 
• Over multiple measurements, these errors might compensate for each other, hence termed as compensating errors 
 
Other Factors: 
Variation in Temperature: 
• This causes a systematic error, not a compensating one, because it consistently affects the length of the chain due to expansion or contraction. 
Sag in Chain: 
• This typically leads to a systematic error, where the chain sags uniformly, causing an overestimation of the distance. 
Bad Ranging: 
• This is also a systematic error because it consistently affects the alignment, leading to incorrect measurements.

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