GATE ME
Production Engineering
Metrology and Inspection
Previous Years Questions

## Marks 1

Cylindrical pins of diameter $${15^{ \pm 0.020}}\,\,mm$$ are being produced on a machine. Statistical quality control tests show a mean of $$14.995$$ ...
Match the following ...
Which one of the following statements is TRUE?
Holes of diameter $${25.0^{\matrix{ { + 0.040} \cr { + 0.020} \cr } }}\,\,mm$$ are assembled interchangeably with the pins of diameter $${... The flatness of a machine bed can be measured using Which one of the following instruments is widely used to check and calibrate geometric features of machine tools during their assembly? A metric thread of pitch$$2mm$$and thread angle 60° is inspected for its pitch diameter using 3-wire method. The diameter of the best size wire... In an interchangeable assembly, shafts of size$${25.000^{\matrix{ { + 0.040} \cr { - 0.010} \cr } }}\,\,mm$$mate with holes of size$${2...
A hole is dimension $$\phi {9^{\matrix{ { + 0.015} \cr { + 0\,\,\,\,\,\,\,\,\,\,} \cr } }}\,mm.$$ The corresponding shaft is of dimension ...
Ring gage is used to measure
In order to have interference fit, it is essential that the lower limit of the shaft should be
Allowance in limits and fits refers to
The fit on a hole-shaft system is specified as $$H7$$-$$s6.$$ The type of fit is
Slip gauges are calibrated by outside micrometer
Checking the diameter of a hole using GO and NOGO gauges is an example of inspection by …………… (variables/attributes)
Appropriate instrument to check the flatness of slip gage is
In an engineering drawing one finds the designation of $$20G7F8.$$ The position of tolerance of the hole is indicated by
The hole $${40^{\matrix{ {0.020} \cr { + 0.000} \cr } }}$$ & shaft, $${40^{\matrix{ { + 0.010} \cr { - 0.010} \cr } }}$$ w...

## Marks 2

A cylindrical pin $$25_{ + 0.010}^{ + 0.020}\,\,mm$$ diameter is electroplated. Plating thickness is $${2.0^{ \pm 0.005}}\,\,mm$$. Neglecting the g...
Assume that the surface roughness profile is triangular as shown schematically in the figure. If the peak to valley height is $$20$$ $$\mu m$$ The cen...
Two optically flat plates of glass are kept at a small angle $$\theta$$ as shown in the figure. Monochromatic light is incident vertically. If the...
For the situation shown in the figure below the expression for $$H$$ in terms of $$r, R$$ and $$D$$ is ...
In the assembly shown below, the part dimensions are: \eqalign{ & {L_1} = {22.0^{ \pm 0.01}}\,\,mm, \cr & {L_2} = {L_3} = {10.0^{ \pm... AGO-NoGO$$plug gauge is to be designed for measuring a hole of nominal diameter$$25mm$$with a hole tolerance of$$ \pm 0.015\,\,mm.$$... The diameter of a recessed ring was measured by using two spherical balls of diameter$${d_2} = 60mm$$and$${d_1} = 40mm$$as shown in the figure. ... For the given assembly :$$25H7/g8,$$match Group$$A$$with Group$$B$$... Cylindrical pins of$${25^{\matrix{ { + 0.020} \cr { + 0.010} \cr } }}\,\,mm$$diameter are electroplated in a shop. Thickness of the pla... A shaft has a dimension$$\phi {35^{\matrix{ { - 0.009} \cr { - 0.025} \cr } }}$$. The respective values of fundamental deviation and... A taper hole is inspected using a$$CMM,$$with a probe of$$2mm$$diameter. At a height,$$Z=10mm$$from the bottom,$$5$$points are touched and a d... What are the upper and lower limits of the shaft represented by$$60{f_8}$$? Use the following data: Diameter$$60$$lies in the diameter step of$$50...
A displacement sensor (a dial indicator) measures the lateral displacement of a mandrel on the taper hole inside a drill spindle. The mandrel axis is ...
A hole is specified as $${40^{\matrix{ {0.050} \cr {0.000} \cr } }}\,\,mm.$$ The mating shaft has a clearance fit with minimum clearance o...
A hole of diameter $${25.00^{ + 0.01}}\,\,mm$$ is to be inspected by using GO / NO GO gages. The size of the GO plug gage should be
The dimensional limits on a shaft of $$25h7$$ are
A threaded nut of $$M16,$$ $$ISO$$ metric type having $$2$$ $$mm$$ pitch with a pitch diameter of $$14.701$$ $$mm$$ is to be checked for its pitch di...
A part shown in the gig is machined to the sizes given below With $$100\%$$ confidence, the resultant dimension $$W$$ will have the specification ...
$$3$$ blocks of $${B_1},\,\,{B_2},\,\,{B_3}$$ are to be inserted in a channel of width $$'S'$$ maintaining a minimum gap of width $$T=0.125mm,$$ as sh...
A shaft of diameter $${20^{\matrix{ { + 0.05} \cr { - 0.15} \cr } }}\,\,mm$$ and a hole of diameter $${20^{\matrix{ { + 0.20} \cr ... Two shafts$$A$$and$$B$$have their diameters specified as$$100 \pm 0.1\,\,mm$$and$$0.1 \pm 0.0001\,\,mm$$respectively. Which of the following ... A bush was turned after mounting the same on a mandrel. The mandrel diameter in millimeters is$${40^{\matrix{ { + 0.00} \cr { - 0.05} \cr ...
EXAM MAP
Joint Entrance Examination