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A 30 m steel tape was standardized at 20°C and measurements of distances were taken at 15°C. if the coefficient of linear expansion α of the material of the tape were 0.000112 per °C, then error due to temperature per tape length would be
  • a)
    -0.0000560 m
  • b)
    +0.0000560 m
  • c)
    +0.0016800 m
  • d)
    -0.0016800 m
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A 30 m steel tape was standardized at 20°C and measurements of dis...
αΔT= 0.0000112(15-20)
= -0.0000560 m
This question is part of UPSC exam. View all Civil Engineering (CE) courses
Most Upvoted Answer
A 30 m steel tape was standardized at 20°C and measurements of dis...
°C. The tape is used to measure a distance of 150 m on a hot day when the temperature is 35°C. Calculate the corrected distance measured by the tape.

The correction factor for the steel tape can be calculated using the formula:

CF = αL (T2 - T1)

Where CF is the correction factor, α is the coefficient of linear expansion for steel (11.7 x 10^-6/°C), L is the length of the tape (30 m), T2 is the temperature of the tape during measurement (35°C), and T1 is the standardization temperature (20°C).

CF = (11.7 x 10^-6/°C) x 30 m x (35°C - 20°C)
CF = 0.0117 x 30 x 15
CF = 5.265 mm

The corrected distance measured by the tape can be calculated by subtracting the correction factor from the measured distance:

Corrected distance = measured distance - correction factor
Corrected distance = 150 m - 5.265 mm
Corrected distance = 149.994735 m

Therefore, the corrected distance measured by the tape is 149.994735 m.
Community Answer
A 30 m steel tape was standardized at 20°C and measurements of dis...
I think B is correct answers, if correction (-)ve , error (+)
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A 30 m steel tape was standardized at 20°C and measurements of distances were taken at 15°C. if the coefficient of linear expansion α of the material of the tape were 0.000112 per °C, then error due to temperature per tape length would bea)-0.0000560 mb)+0.0000560 mc)+0.0016800 md)-0.0016800 mCorrect answer is option 'A'. Can you explain this answer?
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A 30 m steel tape was standardized at 20°C and measurements of distances were taken at 15°C. if the coefficient of linear expansion α of the material of the tape were 0.000112 per °C, then error due to temperature per tape length would bea)-0.0000560 mb)+0.0000560 mc)+0.0016800 md)-0.0016800 mCorrect 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 A 30 m steel tape was standardized at 20°C and measurements of distances were taken at 15°C. if the coefficient of linear expansion α of the material of the tape were 0.000112 per °C, then error due to temperature per tape length would bea)-0.0000560 mb)+0.0000560 mc)+0.0016800 md)-0.0016800 mCorrect 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 A 30 m steel tape was standardized at 20°C and measurements of distances were taken at 15°C. if the coefficient of linear expansion α of the material of the tape were 0.000112 per °C, then error due to temperature per tape length would bea)-0.0000560 mb)+0.0000560 mc)+0.0016800 md)-0.0016800 mCorrect answer is option 'A'. Can you explain this answer?.
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