Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 4 (Q.No. 46)
46.
A standard steel tape of length 30 m and cross-section 15 x 1.0 mm was standardised at 25°C and at 30 kg pull. While measuring a base line at the same temperature, the pull applied was 40 kg. If the modulus of elasticity of steel tape is 2.2 x 106 kg/cm2, the correction to be applied is
Discussion:
27 comments Page 2 of 3.
Shiv tiwari said:
6 years ago
If pull at the time of measure is more than pull at the time of standardization then correction is always positive and vice versa.
Satish said:
9 years ago
But in my point of view c option is correct because pm >po then correction is positive.
Can anyone agree with me?
Can anyone agree with me?
Ashwani Kumar said:
7 years ago
Standard pull 30 kg, but applied 40kg, means tape elongate.
Measureless, mean error -ive.
Correction must be +ive.
Measureless, mean error -ive.
Correction must be +ive.
RK said:
9 years ago
I agree with @Satish as the length of the tape is more so measures length will less so correction will be less.
A.Ahmed said:
6 years ago
All my friends are said to correct answer is C but they did not convert the unit of 30m chain into 30*100 cm.
Jay ghosh said:
10 years ago
Applied pull 40 kg and standardized pull 30 kg. So value of correction is +0.000909 m and answer is (C).
B N YADAV said:
9 years ago
(Pm-Po)L/AE.
If Pm is greater than Po, the correction will be positive ie. +0.000909 m.
If Pm is greater than Po, the correction will be positive ie. +0.000909 m.
Abhilash said:
7 years ago
@All.
The correction is opposite of error so it should be negative.
The correction is opposite of error so it should be negative.
(1)
Apna said:
7 years ago
The sign is also included in the formula, so C option is correct.
Ajay said:
9 years ago
Correction = (P-p) * L/A * E
=> (40-30) * 30/15 * 2.2 * 10^6.
=> (40-30) * 30/15 * 2.2 * 10^6.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers