GATE PI Metrology and Inspection PYQs & Answers — Page 3

Questions 21–26 of 26. Imported answers require independent review unless marked reviewed.

Topic practice 26 questionsPage 3 of 3

Which one of the following instruments makes use of the principle of interference of light?

Your answerChoose one option.

Optical flat

Auto-collimator

Optical projector

Coordinate measuring machine

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In a shaft-hole system, the dimensions with tolerances (in mm) are as follows: Shaft:

; Hole:

, where both x and y are positive real numbers. Which one of the following will provide an interference fit?

Your answerChoose one option.

x = 0.05, y = 0.040

x = 0.04, y = 0.035

x = 0.04, y = 0.032

x = 0.02, y = 0.035

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In a mass production firm, measurements are carried out on 1000 pairs of shaft and hole. The mean diameters of the shaft and the hole are 37.53 mm and 37.59 mm, respectively. The corresponding standard deviations are 0.03 mm and 0.04 mm. The mean clearance and its standard deviation (both in mm), respectively, are

Your answerChoose one option.

0.06 and 0.07

0.06 and 0.06

0.06 and 0.05

0.07 and 0.01

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In a V-thread, a wire is fitted such that it makes contact with the flank of the thread on the pitch line as shown in the figure. If the pitch p of the thread is 3 mm and the included angle is 60°, the diameter (in mm, up to one decimal place) of the wire is _____

Diagram for Production and Industrial Engineering question 42

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Accuracy of a measuring instrument is expressed as

Your answerChoose one option.

true value − measured value

measured value − true value

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A machined surface with standard symbols indicating the surface texture is shown in the Figure. (All dimensions in the Figure are in micrometer).

Diagram for Production and Industrial Engineering question 25

The waviness height (in micrometer) of the surface is

Your answerChoose one option.

120

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GATE PI Metrology and Inspection PYQs

Question 6

Question 29

Question 33

Question 42

Question 16

Question 25