GATE Mining Engineering Practice Quiz

Question 1

A steel tape is standardized at 20°C. It is used to measure a line in a mine at 35°C. If the coefficient of linear expansion of the tape is positive, what correction should be applied to the measured length due to temperature?

Accepted Answer

Add a correction because the tape becomes longer at higher temperature

Question 2

A 20 m tape is correct at standard conditions. A 100 m line is measured on a slope of 30° to the horizontal. Ignoring all other corrections, what is the horizontal distance?

Accepted Answer

86.6 m

Question 3

A 30 m tape is actually 30.03 m long under standard conditions. If a line is measured as 300 m with this tape, what is the correct true length considering only standardization correction?

Accepted Answer

300.30 m

Question 4

A tape is standardized at 20°C and 100 N pull. During measurement, the temperature is lower than 20°C while the pull is greater than 100 N. Which statement is correct about the signs of temperature and pull corrections?

Accepted Answer

Temperature correction is negative and pull correction is positive

GATE Mining Engineering — Mock tests

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