Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 2 (Q.No. 38)
38.
Measuring with a 30 m chain, 0.01 m too short, introduces
Discussion:
26 comments Page 2 of 3.
Prem said:
7 years ago
The answer C is correct because it is a cumulative error not compensating. The error will increase in only one direction and it finally accumulates so it is compensating in nature.
Shubham said:
7 years ago
The Length of a chain is short so the error will be negative and chain will also short for further measurements and error in only one direction so it will be a cumulative error so the answer is a negative cumulative error.
Rishu said:
7 years ago
If the length of the chain is more, the measured distance will be less and hence the error will be negative.
Ref: B.C. Punmia.
Ref: B.C. Punmia.
Vikram said:
8 years ago
Here, the correction is positive and the error is negative in cumulative in nature.
Brijesh said:
8 years ago
If 20 chain is too short by 1m.
the supposed it measures 40m(it is measured value),
true value because chain is short=(40-2=38),
error=M.V-T.V.
=40-38,
=+2.
the supposed it measures 40m(it is measured value),
true value because chain is short=(40-2=38),
error=M.V-T.V.
=40-38,
=+2.
Harish said:
8 years ago
Answer is right.
Tape measurers 30m while having a error 0.01m short, that mean the actual measured length is 29.99m.
So positive cumulative error.
Tape measurers 30m while having a error 0.01m short, that mean the actual measured length is 29.99m.
So positive cumulative error.
Nitya said:
8 years ago
Compensating error removes self after completion of work or can say no effect on work.
Jayabrata Ghosh said:
9 years ago
Answer should be B. Because for negative error the measured length is less than actual length. And a cumulative error is proportional to L whereas compensating error is proportional to root L.
Jack said:
9 years ago
Kindly verify.
The error in chaining is -ve if the measured length is less than actual length.
Suppose, the actual distance is 30m.
And the chain is elongated by 1m.
The measured distance will be 29m.
The error will be 29 - 30= -1m.
i.e negative error.
The error in chaining is -ve if the measured length is less than actual length.
Suppose, the actual distance is 30m.
And the chain is elongated by 1m.
The measured distance will be 29m.
The error will be 29 - 30= -1m.
i.e negative error.
Tarak patel said:
9 years ago
The error in measured length due to the incorrect holding of the chain is a compensating error.
And negative errors are caused in the chain when its length is more than the standard length.
So the answer is C.
And negative errors are caused in the chain when its length is more than the standard length.
So the answer is C.
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